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Extract from the Register of European Patents

EP About this file: EP2820256

EP2820256 - GEARED TURBOFAN ENGINE WITH COUNTER-ROTATING SHAFTS [Right-click to bookmark this link]
StatusThe patent has been granted
Status updated on  30.04.2021
Database last updated on 29.07.2024
FormerGrant of patent is intended
Status updated on  14.12.2020
FormerExamination is in progress
Status updated on  20.04.2018
Most recent event   Tooltip14.06.2024Lapse of the patent in a contracting state
New state(s): TR		published on 17.07.2024  [2024/29]
Applicant(s)For all designated states
RTX Corporation
10 Farm Springs Road
Farmington, CT 06032 / US
[2023/44]
Former [2021/12]For all designated states
Raytheon Technologies Corporation
10 Farm Springs Road
Farmington, CT 06032 / US
Former [2016/43]For all designated states
United Technologies Corporation
10 Farm Springs Road
Farmington, CT 06032 / US
Former [2015/02]For all designated states
United Technologies Corporation
One Financial Plaza
Hartford, CT 06101 / US
Inventor(s)01 / SCHWARZ, Frederick M.
121 Steep Hollow Drive
Glastonbury, Connecticut 06033 / US
02 / SUCIU, Gabriel L.
27 Tanglewood Drive
Glastonbury, Connecticut 06033 / US
03 / KUPRATIS, Daniel Bernard
12 Sunset Drive
Wallinford, Connecticut 06492 / US
 [2015/02]
Representative(s)Dehns
St. Bride's House
10 Salisbury Square
London EC4Y 8JD / GB
[2021/22]
Former [2015/02]Leckey, David Herbert
Dehns
St Bride's House
10 Salisbury Square
London
EC4Y 8JD / GB
Application number, filing date13754324.517.01.2013
[2021/22]
WO2013US21878
Priority number, dateUS20121340779529.02.2012         Original published format: US201213407795
[2015/02]
Filing languageEN
Procedural languageEN
PublicationType: A1 Application with search report
No.:WO2013130187
Date:06.09.2013
Language:EN
[2013/36]
Type: A1 Application with search report 
No.:EP2820256
Date:07.01.2015
Language:EN
The application published by WIPO in one of the EPO official languages on 06.09.2013 takes the place of the publication of the European patent application.
[2015/02]
Type: B1 Patent specification 
No.:EP2820256
Date:02.06.2021
Language:EN
[2021/22]
Search report(s)International search report - published on:US06.09.2013
(Supplementary) European search report - dispatched on:EP10.12.2015
ClassificationIPC:F01D25/16, F02K3/06, F02C3/107, F02K3/072, F02C7/20
[2016/02]
CPC:
F01D25/162 (EP); F02C3/107 (EP); F02C7/20 (EP);
F02K3/06 (EP); F02K3/072 (EP); F05D2220/323 (EP);
F05D2240/12 (EP); F05D2240/52 (EP); F05D2250/311 (EP);
F05D2260/30 (EP); F05D2260/40311 (EP) (-)
Former IPC [2015/02]F01D25/16
Designated contracting statesAL,   AT,   BE,   BG,   CH,   CY,   CZ,   DE,   DK,   EE,   ES,   FI,   FR,   GB,   GR,   HR,   HU,   IE,   IS,   IT,   LI,   LT,   LU,   LV,   MC,   MK,   MT,   NL,   NO,   PL,   PT,   RO,   RS,   SE,   SI,   SK,   SM,   TR [2015/02]
Extension statesBANot yet paid
MENot yet paid
TitleGerman:GETRIEBEMANTELSTROMTRIEBWERK MIT GEGENLÄUFIGEN WELLEN[2020/50]
English:GEARED TURBOFAN ENGINE WITH COUNTER-ROTATING SHAFTS[2015/02]
French:MOTEUR DE TURBORÉACTEUR À RÉDUCTEUR ÉQUIPÉ D'ARBRES CONTRAROTATIFS[2015/02]
Former [2015/02]VERZAHNTES MANTELSTROM-TRIEBWERK MIT GEGENLÄUFIGEN WELLEN
Entry into regional phase25.09.2014National basic fee paid 
25.09.2014Search fee paid 
25.09.2014Designation fee(s) paid 
25.09.2014Examination fee paid 
Examination procedure25.09.2014Examination requested  [2015/02]
18.07.2016Amendment by applicant (claims and/or description)
20.04.2018Despatch of a communication from the examining division (Time limit: M06)
30.10.2018Reply to a communication from the examining division
06.08.2019Despatch of a communication from the examining division (Time limit: M06)
17.02.2020Reply to a communication from the examining division
15.12.2020Communication of intention to grant the patent
26.04.2021Fee for grant paid
26.04.2021Fee for publishing/printing paid
26.04.2021Receipt of the translation of the claim(s)
Divisional application(s)EP21177173.8  / EP3916205
The date of the Examining Division's first communication in respect of the earliest application for which a communication has been issued is  20.04.2018
Opposition(s)Opponent(s)01  28.02.2022  02.03.2022  ADMISSIBLE
Safran Aircraft Engines
2 boulevard du Général Martial Valin
75015 Paris / FR
Opponent's representative
Regimbeau
20, rue de Chazelles
75847 Paris Cedex 17 / FR
 [2022/14]
15.03.2022Invitation to proprietor to file observations on the notice of opposition
25.07.2022Reply of patent proprietor to notice(s) of opposition
08.05.2024Cancellation of oral proceeding that was planned for 15.05.2024
10.05.2024Despatch of communication that the patent will be revoked
15.05.2024Date of oral proceedings
Fees paidRenewal fee
13.01.2015Renewal fee patent year 03
28.01.2016Renewal fee patent year 04
24.01.2017Renewal fee patent year 05
24.01.2018Renewal fee patent year 06
24.01.2019Renewal fee patent year 07
21.01.2020Renewal fee patent year 08
20.01.2021Renewal fee patent year 09
Opt-out from the exclusive  Tooltip
competence of the Unified
Patent Court		 See the Register of the Unified Patent Court for opt-out data
Responsibility for the accuracy, completeness or quality of the data displayed under the link provided lies entirely with the Unified Patent Court.
Lapses during opposition  TooltipHU17.01.2013
AL02.06.2021
AT02.06.2021
CY02.06.2021
CZ02.06.2021
DK02.06.2021
EE02.06.2021
ES02.06.2021
FI02.06.2021
HR02.06.2021
IT02.06.2021
LT02.06.2021
LV02.06.2021
MC02.06.2021
MK02.06.2021
NL02.06.2021
PL02.06.2021
RO02.06.2021
RS02.06.2021
SE02.06.2021
SI02.06.2021
SK02.06.2021
SM02.06.2021
TR02.06.2021
BG02.09.2021
NO02.09.2021
GR03.09.2021
IS02.10.2021
PT04.10.2021
IE17.01.2022
LU17.01.2022
BE31.01.2022
CH31.01.2022
LI31.01.2022
[2024/29]
Former [2024/22]HU17.01.2013
AL02.06.2021
AT02.06.2021
CY02.06.2021
CZ02.06.2021
DK02.06.2021
EE02.06.2021
ES02.06.2021
FI02.06.2021
HR02.06.2021
IT02.06.2021
LT02.06.2021
LV02.06.2021
MC02.06.2021
MK02.06.2021
NL02.06.2021
PL02.06.2021
RO02.06.2021
RS02.06.2021
SE02.06.2021
SI02.06.2021
SK02.06.2021
SM02.06.2021
BG02.09.2021
NO02.09.2021
GR03.09.2021
IS02.10.2021
PT04.10.2021
IE17.01.2022
LU17.01.2022
BE31.01.2022
CH31.01.2022
LI31.01.2022
Former [2024/20]HU17.01.2013
AL02.06.2021
AT02.06.2021
CY02.06.2021
CZ02.06.2021
DK02.06.2021
EE02.06.2021
ES02.06.2021
FI02.06.2021
HR02.06.2021
IT02.06.2021
LT02.06.2021
LV02.06.2021
MC02.06.2021
NL02.06.2021
PL02.06.2021
RO02.06.2021
RS02.06.2021
SE02.06.2021
SI02.06.2021
SK02.06.2021
SM02.06.2021
BG02.09.2021
NO02.09.2021
GR03.09.2021
IS02.10.2021
PT04.10.2021
IE17.01.2022
LU17.01.2022
BE31.01.2022
CH31.01.2022
LI31.01.2022
Former [2024/18]HU17.01.2013
AL02.06.2021
AT02.06.2021
CZ02.06.2021
DK02.06.2021
EE02.06.2021
ES02.06.2021
FI02.06.2021
HR02.06.2021
IT02.06.2021
LT02.06.2021
LV02.06.2021
MC02.06.2021
NL02.06.2021
PL02.06.2021
RO02.06.2021
RS02.06.2021
SE02.06.2021
SI02.06.2021
SK02.06.2021
SM02.06.2021
BG02.09.2021
NO02.09.2021
GR03.09.2021
IS02.10.2021
PT04.10.2021
IE17.01.2022
LU17.01.2022
BE31.01.2022
CH31.01.2022
LI31.01.2022
Former [2023/09]AL02.06.2021
AT02.06.2021
CZ02.06.2021
DK02.06.2021
EE02.06.2021
ES02.06.2021
FI02.06.2021
HR02.06.2021
IT02.06.2021
LT02.06.2021
LV02.06.2021
MC02.06.2021
NL02.06.2021
PL02.06.2021
RO02.06.2021
RS02.06.2021
SE02.06.2021
SI02.06.2021
SK02.06.2021
SM02.06.2021
BG02.09.2021
NO02.09.2021
GR03.09.2021
IS02.10.2021
PT04.10.2021
IE17.01.2022
LU17.01.2022
BE31.01.2022
CH31.01.2022
LI31.01.2022
Former [2023/03]AL02.06.2021
AT02.06.2021
CZ02.06.2021
DK02.06.2021
EE02.06.2021
ES02.06.2021
FI02.06.2021
HR02.06.2021
IT02.06.2021
LT02.06.2021
LV02.06.2021
MC02.06.2021
NL02.06.2021
PL02.06.2021
RO02.06.2021
RS02.06.2021
SE02.06.2021
SI02.06.2021
SK02.06.2021
SM02.06.2021
BG02.09.2021
NO02.09.2021
GR03.09.2021
IS02.10.2021
PT04.10.2021
LU17.01.2022
BE31.01.2022
CH31.01.2022
LI31.01.2022
Former [2023/01]AL02.06.2021
AT02.06.2021
CZ02.06.2021
DK02.06.2021
EE02.06.2021
ES02.06.2021
FI02.06.2021
HR02.06.2021
IT02.06.2021
LT02.06.2021
LV02.06.2021
MC02.06.2021
NL02.06.2021
PL02.06.2021
RO02.06.2021
RS02.06.2021
SE02.06.2021
SI02.06.2021
SK02.06.2021
SM02.06.2021
BG02.09.2021
NO02.09.2021
GR03.09.2021
IS02.10.2021
PT04.10.2021
LU17.01.2022
BE31.01.2022
Former [2022/46]AL02.06.2021
AT02.06.2021
CZ02.06.2021
DK02.06.2021
EE02.06.2021
ES02.06.2021
FI02.06.2021
HR02.06.2021
IT02.06.2021
LT02.06.2021
LV02.06.2021
MC02.06.2021
NL02.06.2021
PL02.06.2021
RO02.06.2021
RS02.06.2021
SE02.06.2021
SI02.06.2021
SK02.06.2021
SM02.06.2021
BG02.09.2021
NO02.09.2021
GR03.09.2021
IS02.10.2021
PT04.10.2021
LU17.01.2022
Former [2022/39]AL02.06.2021
AT02.06.2021
CZ02.06.2021
DK02.06.2021
EE02.06.2021
ES02.06.2021
FI02.06.2021
HR02.06.2021
IT02.06.2021
LT02.06.2021
LV02.06.2021
MC02.06.2021
NL02.06.2021
PL02.06.2021
RO02.06.2021
RS02.06.2021
SE02.06.2021
SI02.06.2021
SK02.06.2021
SM02.06.2021
BG02.09.2021
NO02.09.2021
GR03.09.2021
IS02.10.2021
PT04.10.2021
Former [2022/36]AL02.06.2021
AT02.06.2021
CZ02.06.2021
DK02.06.2021
EE02.06.2021
ES02.06.2021
FI02.06.2021
HR02.06.2021
IT02.06.2021
LT02.06.2021
LV02.06.2021
NL02.06.2021
PL02.06.2021
RO02.06.2021
RS02.06.2021
SE02.06.2021
SI02.06.2021
SK02.06.2021
SM02.06.2021
BG02.09.2021
NO02.09.2021
GR03.09.2021
IS02.10.2021
PT04.10.2021
Former [2022/29]AL02.06.2021
AT02.06.2021
CZ02.06.2021
DK02.06.2021
EE02.06.2021
ES02.06.2021
FI02.06.2021
HR02.06.2021
LT02.06.2021
LV02.06.2021
NL02.06.2021
PL02.06.2021
RO02.06.2021
RS02.06.2021
SE02.06.2021
SI02.06.2021
SK02.06.2021
SM02.06.2021
BG02.09.2021
NO02.09.2021
GR03.09.2021
IS02.10.2021
PT04.10.2021
Former [2022/26]AL02.06.2021
AT02.06.2021
CZ02.06.2021
DK02.06.2021
EE02.06.2021
ES02.06.2021
FI02.06.2021
HR02.06.2021
LT02.06.2021
LV02.06.2021
NL02.06.2021
PL02.06.2021
RO02.06.2021
RS02.06.2021
SE02.06.2021
SK02.06.2021
SM02.06.2021
BG02.09.2021
NO02.09.2021
GR03.09.2021
IS02.10.2021
PT04.10.2021
Former [2022/21]AT02.06.2021
CZ02.06.2021
DK02.06.2021
EE02.06.2021
ES02.06.2021
FI02.06.2021
HR02.06.2021
LT02.06.2021
LV02.06.2021
NL02.06.2021
PL02.06.2021
RO02.06.2021
RS02.06.2021
SE02.06.2021
SK02.06.2021
SM02.06.2021
BG02.09.2021
NO02.09.2021
GR03.09.2021
IS02.10.2021
PT04.10.2021
Former [2022/10]AT02.06.2021
CZ02.06.2021
EE02.06.2021
ES02.06.2021
FI02.06.2021
HR02.06.2021
LT02.06.2021
LV02.06.2021
NL02.06.2021
PL02.06.2021
RO02.06.2021
RS02.06.2021
SE02.06.2021
SK02.06.2021
SM02.06.2021
BG02.09.2021
NO02.09.2021
GR03.09.2021
IS02.10.2021
PT04.10.2021
Former [2022/09]AT02.06.2021
CZ02.06.2021
ES02.06.2021
FI02.06.2021
HR02.06.2021
LT02.06.2021
LV02.06.2021
NL02.06.2021
PL02.06.2021
RO02.06.2021
RS02.06.2021
SE02.06.2021
SK02.06.2021
SM02.06.2021
BG02.09.2021
NO02.09.2021
GR03.09.2021
PT04.10.2021
Former [2022/08]AT02.06.2021
CZ02.06.2021
ES02.06.2021
FI02.06.2021
HR02.06.2021
LT02.06.2021
LV02.06.2021
NL02.06.2021
PL02.06.2021
RS02.06.2021
SE02.06.2021
SM02.06.2021
BG02.09.2021
NO02.09.2021
GR03.09.2021
Former [2022/07]AT02.06.2021
FI02.06.2021
HR02.06.2021
LT02.06.2021
LV02.06.2021
NL02.06.2021
PL02.06.2021
RS02.06.2021
SE02.06.2021
SM02.06.2021
BG02.09.2021
NO02.09.2021
GR03.09.2021
Former [2021/52]FI02.06.2021
HR02.06.2021
LT02.06.2021
LV02.06.2021
PL02.06.2021
RS02.06.2021
SE02.06.2021
BG02.09.2021
NO02.09.2021
GR03.09.2021
Former [2021/51]FI02.06.2021
HR02.06.2021
LT02.06.2021
LV02.06.2021
RS02.06.2021
SE02.06.2021
BG02.09.2021
NO02.09.2021
GR03.09.2021
Former [2021/49]FI02.06.2021
HR02.06.2021
LT02.06.2021
LV02.06.2021
SE02.06.2021
BG02.09.2021
NO02.09.2021
GR03.09.2021
Former [2021/47]FI02.06.2021
LT02.06.2021
BG02.09.2021
Former [2021/46]FI02.06.2021
LT02.06.2021
Documents cited:Search[I]US2008098715  (ORLANDO ROBERT JOSEPH [US], et al) [I] 1-15 * figures 1-3 * * paragraph [0013] - paragraph [0016] *;
 [I]US2009317229  (SUCIU GABRIEL L [US], et al) [I] 1-15 * figure 1a * * paragraph [0019] * * paragraph [0022] * * paragraph [0026] - paragraph [0027] *;
 [I]DE3933776  (MTU MUENCHEN GMBH [DE]) [I] 3-15 * figures 1-2 * * column 4, line 18 - line 68 *;
 [A]US5160251  (CIOKAJLO JOHN J [US]) [A] 1-15 * figures 1-4 *;
 [A]US2008276621  (SOMANATH NAGENDRA [US], et al) [A] 1-15 * figure 1 *
International search[Y]US2009097967  (SMITH PETER G [US], et al);
 [Y]US2008276621  (SOMANATH NAGENDRA [US], et al);
 [Y]US8015798  (NORRIS JAMES W [US], et al);
 [Y]US2009317229  (SUCIU GABRIEL L [US], et al);
 [Y]US7685808  (ORLANDO ROBERT JOSEPH [US], et al);
 [Y]US5081832  (MOWILL ROLF J [NO]);
 [Y]US2010132377  (DUROCHER ERIC [CA], et al)
ExaminationEP2809912
by applicantUS2008098715
 US2009317229
 DE3933776
OppositionWO2013116259
 WO2013116028
 US5160251
    - DARLE W. DUDLEY, "Gear arrangements", Gear Handbook. 1st ed., McGraw-Hill, (1962), page 3-16, XP055904830
    - D. E. Gray, "Energy efficient engine preliminary design and integration studies", NASA CR-135396, NASA, (19781101), pages 1 - 366, NASA CR-135396, URL: http://ntrs.nasa.gov/archive/nasa/casi.ntrs.nasa.gov/19790003913.pdf, (20160615), XP055280688
    - A Marn, E Gottlich, D Cadrecha And H P Pirker, "Shorten the intermediate turbine duct length by applying an integrated concept (GT2008-50269)", Proc. of ASME Turbio Expo 2008: Power for Land, Sea and Air, Berlin Germany, Berlin Germany , (20080609), XP055683318
    - RIEGLER C. ET AL, "THE GEARED TURBOFAN TECHNOLOGY-OPPORTUNITIES, CHALLENGES AND READINESS STATUS", TECHNICAL REPORT, MTU AERO ENGINES GMBH, (20070101), pages 1 - 10, XP003035801
    - T J Praisner, Grover E, Mocanu R, Jurek R, Gacek R, "PREDICTIONS OF UNSTEADY INTERACTIONS BETWEEN CLOSELY COUPLED HP AND LP TURBINES WITH CO-AND COUNTER-ROTATION", Proceedings of ASME Turbo Expo 2010: Power for Land, Sea and Air, (20100614), pages 1 - 10, XP055522119
    - Joachim Kurzke, "Fundamental Differences Between Conventional and Geared Turbofans", Proceedings of ASME Turbo Expo 2009: Power for Land, Sea and Air, GT2009-59745, ASME, (20090608), vol. 1, doi:10.1115/GT2009-59745, ISBN 978-0-7918-4882-1, pages 145 - 153, XP055459767

DOI:   http://dx.doi.org/10.1115/GT2009-59745
The EPO accepts no responsibility for the accuracy of data originating from other authorities; in particular, it does not guarantee that it is complete, up to date or fit for specific purposes.