blank Quick help
blank Maintenance news

Scheduled maintenance

Regular maintenance outages:
between 05.00 and 05.15 hrs CET (Monday to Sunday).

Other outages
Availability

2022.02.11

More...
blank News flashes

Italy joins the Federated Register

Click here for more information on the Federated Register.

2025-06-12

More...
blank Related links

Release notes
European Patent Register Assistant
European Patent Register User Manual
European Patent Register – pocket guide
FAQ - European Patent Register
Federated Register (Flyer)
Global Dossier (Flyer)
Register events
Deep link coverage
Federated Register content
The Patent Information Tour
Fair use charter

Extract from the Register of European Patents

EP About this file: EP3741499

EP3741499 - ASSEMBLY AND THE METHOD OF FORMING GAS TURBINE ENGINE COMPONENTS [Right-click to bookmark this link]
StatusNo opposition filed within time limit
Status updated on  08.08.2025
Database last updated on 19.03.2026
FormerThe patent has been granted
Status updated on  30.08.2024
FormerGrant of patent is intended
Status updated on  24.04.2024
FormerRequest for examination was made
Status updated on  28.05.2021
FormerThe application has been published
Status updated on  23.10.2020
Most recent event   Tooltip23.01.2026Lapse of the patent in a contracting state
New state(s): BE, CH		published on 25.02.2026  [2026/09]
Applicant(s)For all designated states
RTX Corporation
10 Farm Springs Road
Farmington, CT 06032 / US
[2023/44]
Former [2020/48]For all designated states
Raytheon Technologies Corporation
10 Farm Springs Road
Farmington, CT 06032 / US
Inventor(s)01 / BALES, Daniel A.
2 Sconsett Bluff
Avon, CT Connecticut 06001 / US
 [2020/48]
Representative(s)Dehns
10 Old Bailey
London EC4M 7NG / GB
[N/P]
Former [2020/48]Dehns
St. Bride's House
10 Salisbury Square
London EC4Y 8JD / GB
Application number, filing date20171932.528.04.2020
[2020/48]
Priority number, dateUS20191642029123.05.2019         Original published format: US201916420291
[2020/48]
Filing languageEN
Procedural languageEN
PublicationType: A1 Application with search report 
No.:EP3741499
Date:25.11.2020
Language:EN
[2020/48]
Type: B1 Patent specification 
No.:EP3741499
Date:02.10.2024
Language:EN
[2024/40]
Search report(s)(Supplementary) European search report - dispatched on:EP14.10.2020
ClassificationIPC:B23P15/04, F01D5/14, B22F3/24, B22F7/06, C22C1/04, F01D5/28, F04D29/54, F04D29/58, B21D22/02, B21D37/16, B21D53/78, B21D26/053, B22F10/20, F04D29/32, B22F5/04
[2024/17]
CPC:
B23P15/04 (EP,US); B21D22/022 (EP); B21D26/053 (EP);
B21D37/16 (EP); B21D53/78 (EP,US); B21J13/02 (US);
B21J15/02 (US); B22F10/20 (EP,US); B22F5/04 (EP);
B23P15/02 (US); F01D5/147 (EP,US); F01D5/284 (EP);
F04D29/324 (EP); F04D29/544 (EP); F04D29/582 (EP);
B22F2003/247 (EP); B22F2007/068 (EP); B33Y80/00 (EP);
F05D2220/36 (EP); F05D2230/20 (EP,US); F05D2230/22 (EP);
F05D2230/233 (EP); F05D2230/234 (EP); F05D2230/236 (EP);
F05D2230/237 (EP); F05D2230/25 (EP); F05D2230/31 (EP);
F05D2230/40 (EP); F05D2230/60 (EP); F05D2260/22141 (EP);
F05D2300/20 (EP); Y02P10/25 (EP) (-)
Former IPC [2020/48]B23P15/04, F01D5/14, B23K37/00, B23K37/04, B21D22/02, B21D37/16, B21D53/78, B21D26/053, B22F5/04, B23K20/02, F04D29/32
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 [2021/26]
Former [2020/48]AL,  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 
TitleGerman:VORRICHTUNG UND VERFAHREN ZUR FORMUNG VON GASTURBINENTRIEBWERKSKOMPONENTEN[2020/48]
English:ASSEMBLY AND THE METHOD OF FORMING GAS TURBINE ENGINE COMPONENTS[2020/48]
French:ENSEMBLE ET PROCÉDÉ DE FORMATION DE COMPOSANTS DE MOTEUR À TURBINE À GAZ[2020/48]
Examination procedure21.05.2021Amendment by applicant (claims and/or description)
21.05.2021Examination requested  [2021/26]
21.05.2021Date on which the examining division has become responsible
25.04.2024Communication of intention to grant the patent
19.08.2024Fee for grant paid
19.08.2024Fee for publishing/printing paid
19.08.2024Receipt of the translation of the claim(s)
Opposition(s)03.07.2025No opposition filed within time limit [2025/37]
Fees paidRenewal fee
20.04.2022Renewal fee patent year 03
20.04.2023Renewal fee patent year 04
15.03.2024Renewal fee patent year 05
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  TooltipAT02.10.2024
BG02.10.2024
CZ02.10.2024
DK02.10.2024
EE02.10.2024
ES02.10.2024
FI02.10.2024
HR02.10.2024
IT02.10.2024
LV02.10.2024
MC02.10.2024
NL02.10.2024
PL02.10.2024
RO02.10.2024
SE02.10.2024
SK02.10.2024
SM02.10.2024
NO02.01.2025
RS02.01.2025
GR03.01.2025
IS02.02.2025
PT03.02.2025
LU28.04.2025
BE30.04.2025
CH30.04.2025
[2026/09]
Former [2026/05]AT02.10.2024
BG02.10.2024
CZ02.10.2024
DK02.10.2024
EE02.10.2024
ES02.10.2024
FI02.10.2024
HR02.10.2024
IT02.10.2024
LV02.10.2024
MC02.10.2024
NL02.10.2024
PL02.10.2024
RO02.10.2024
SE02.10.2024
SK02.10.2024
SM02.10.2024
NO02.01.2025
RS02.01.2025
GR03.01.2025
IS02.02.2025
PT03.02.2025
LU28.04.2025
Former [2025/42]AT02.10.2024
BG02.10.2024
CZ02.10.2024
DK02.10.2024
EE02.10.2024
ES02.10.2024
FI02.10.2024
HR02.10.2024
IT02.10.2024
LV02.10.2024
NL02.10.2024
PL02.10.2024
RO02.10.2024
SE02.10.2024
SK02.10.2024
SM02.10.2024
NO02.01.2025
RS02.01.2025
GR03.01.2025
IS02.02.2025
PT03.02.2025
Former [2025/36]AT02.10.2024
BG02.10.2024
CZ02.10.2024
DK02.10.2024
EE02.10.2024
ES02.10.2024
FI02.10.2024
HR02.10.2024
IT02.10.2024
LV02.10.2024
NL02.10.2024
PL02.10.2024
RO02.10.2024
SK02.10.2024
SM02.10.2024
NO02.01.2025
RS02.01.2025
GR03.01.2025
IS02.02.2025
PT03.02.2025
Former [2025/35]AT02.10.2024
BG02.10.2024
CZ02.10.2024
DK02.10.2024
EE02.10.2024
ES02.10.2024
FI02.10.2024
HR02.10.2024
LV02.10.2024
NL02.10.2024
PL02.10.2024
RO02.10.2024
SM02.10.2024
NO02.01.2025
RS02.01.2025
GR03.01.2025
IS02.02.2025
PT03.02.2025
Former [2025/33]AT02.10.2024
BG02.10.2024
CZ02.10.2024
DK02.10.2024
ES02.10.2024
FI02.10.2024
HR02.10.2024
LV02.10.2024
NL02.10.2024
PL02.10.2024
SM02.10.2024
NO02.01.2025
RS02.01.2025
GR03.01.2025
IS02.02.2025
PT03.02.2025
Former [2025/32]AT02.10.2024
BG02.10.2024
CZ02.10.2024
ES02.10.2024
FI02.10.2024
HR02.10.2024
LV02.10.2024
NL02.10.2024
PL02.10.2024
SM02.10.2024
NO02.01.2025
RS02.01.2025
GR03.01.2025
IS02.02.2025
PT03.02.2025
Former [2025/23]AT02.10.2024
BG02.10.2024
CZ02.10.2024
ES02.10.2024
FI02.10.2024
HR02.10.2024
LV02.10.2024
NL02.10.2024
PL02.10.2024
NO02.01.2025
RS02.01.2025
GR03.01.2025
IS02.02.2025
PT03.02.2025
Former [2025/22]AT02.10.2024
BG02.10.2024
ES02.10.2024
FI02.10.2024
HR02.10.2024
LV02.10.2024
NL02.10.2024
NO02.01.2025
GR03.01.2025
IS02.02.2025
PT03.02.2025
Former [2025/21]BG02.10.2024
ES02.10.2024
FI02.10.2024
HR02.10.2024
NL02.10.2024
IS02.02.2025
PT03.02.2025
Former [2025/17]NL02.10.2024
Documents cited:Search[XAYI] JP2018103266  (KEYLEX CORP et al.) [X] 1-5 * paragraphs [0047] , [0048] * * paragraphs [0064] - [0067] * * figures 1-4 * * abstract *[A] 7,14 [Y] 8-13,15 [I] 6
 [YA] US3621700  (WACHTELL RICHARD L et al.) [Y] 8-13,15 * figures 1,6 * * column 3, lines 16-37 * * column 4, lines 7-13 *[A] 7,14
 [A] US5793024  (MATSEN MARC R et al.) [A] 1-15 * column 6, lines 45-47 * * column 7, lines 23-32 * * column 8, lines 49-64 * * column 11, lines 26-41 * * figures 2,7 *
 [A] US2013125603  (LIU WEI-LIANG et al.) [A] 1-15 * paragraphs [0019] , [0020] * * figures 1-4 *
 [A] US2008184762  (HAMMAR RICHARD H et al.) [A] 1-15 * figure 1 * * paragraphs [0018] - [0020] *
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.