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Extract from the Register of European Patents

EP About this file: EP3796304

EP3796304 - ACOUSTIC RESONANCE TRANSFORMER, PIANO AND GRAND PIANO USING THE SAME AND METHOD OF OPTIMISING SOUND OF PIANOS AND GRAND PIANOS [Right-click to bookmark this link]
Former [2021/12]ACOUSTIC RESONANCE TRANSFORMER, PIANO AND WING USING THE SAME AND METHOD OF OPTIMISING SOUND OF PIANOS AND WINGS
[2022/01]
StatusNo opposition filed within time limit
Status updated on  07.07.2023
Database last updated on 21.03.2025
FormerThe patent has been granted
Status updated on  29.07.2022
FormerGrant of patent is intended
Status updated on  10.01.2022
FormerRequest for examination was made
Status updated on  19.02.2021
Most recent event   Tooltip15.11.2024Lapse of the patent in a contracting state
New state(s): BG		published on 18.12.2024  [2024/51]
Applicant(s)For all designated states
Senftleben, Knut
Schulstrasse 4
21781 Cadenberge / DE
[2021/12]
Inventor(s)01 / see applicant
...
 [2021/12]
Representative(s)Manasse, Uwe
Boehmert & Boehmert
Anwaltspartnerschaft mbB
Pettenkoferstrasse 22
80336 München / DE
[2021/12]
Application number, filing date20177390.029.05.2020
[2021/12]
Priority number, dateDE2019100386104.06.2019         Original published format: DE102019003861
[2021/12]
Filing languageDE
Procedural languageDE
PublicationType: A1 Application with search report 
No.:EP3796304
Date:24.03.2021
Language:DE
[2021/12]
Type: B1 Patent specification 
No.:EP3796304
Date:31.08.2022
Language:DE
[2022/35]
Search report(s)(Supplementary) European search report - dispatched on:EP23.02.2021
ClassificationIPC:G10C1/04, G10C3/06
[2021/12]
CPC:
G10K11/04 (EP); F16F3/12 (EP); G10C1/04 (EP);
G10C3/06 (EP); F16F2238/026 (EP)
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 [2021/12]
TitleGerman:AKUSTISCHER RESONANZÜBERTRAGER, KLAVIER UND FLÜGEL MIT DEMSELBEN UND VERFAHREN ZUR KLANGOPTIMIERUNG VON KLAVIEREN UND FLÜGELN[2021/12]
English:ACOUSTIC RESONANCE TRANSFORMER, PIANO AND GRAND PIANO USING THE SAME AND METHOD OF OPTIMISING SOUND OF PIANOS AND GRAND PIANOS[2022/01]
French:TRANSFORMATEUR À RÉSONANCE ACOUSTIQUE, PIANO ET PIANO À QUEUE EN ÉTANT POURVU ET PROCÉDÉ D'OPTIMISATION DE LA TONALITÉ DES PIANOS ET DES PIANOS À QUEUE[2021/12]
Former [2021/12]ACOUSTIC RESONANCE TRANSFORMER, PIANO AND WING USING THE SAME AND METHOD OF OPTIMISING SOUND OF PIANOS AND WINGS
Examination procedure29.05.2020Examination requested  [2021/12]
12.11.2021Amendment by applicant (claims and/or description)
11.01.2022Communication of intention to grant the patent
11.05.2022Fee for grant paid
11.05.2022Fee for publishing/printing paid
11.05.2022Receipt of the translation of the claim(s)
Divisional application(s)EP21158094.9  / EP3863008
Opposition(s)01.06.2023No opposition filed within time limit [2023/32]
Fees paidRenewal fee
25.07.2022Renewal fee patent year 03
Penalty fee
Additional fee for renewal fee
31.05.202203   M06   Fee paid on   25.07.2022
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  TooltipAL31.08.2022
BG31.08.2022
DK31.08.2022
EE31.08.2022
ES31.08.2022
FI31.08.2022
HR31.08.2022
IT31.08.2022
LT31.08.2022
LV31.08.2022
MC31.08.2022
NL31.08.2022
RO31.08.2022
RS31.08.2022
SE31.08.2022
SI31.08.2022
SK31.08.2022
SM31.08.2022
NO30.11.2022
GR01.12.2022
IS31.12.2022
PT02.01.2023
IE29.05.2023
LU29.05.2023
BE31.05.2023
CH31.05.2023
LI31.05.2023
[2024/51]
Former [2024/26]AL31.08.2022
DK31.08.2022
EE31.08.2022
ES31.08.2022
FI31.08.2022
HR31.08.2022
IT31.08.2022
LT31.08.2022
LV31.08.2022
MC31.08.2022
NL31.08.2022
RO31.08.2022
RS31.08.2022
SE31.08.2022
SI31.08.2022
SK31.08.2022
SM31.08.2022
NO30.11.2022
GR01.12.2022
IS31.12.2022
PT02.01.2023
IE29.05.2023
LU29.05.2023
BE31.05.2023
CH31.05.2023
LI31.05.2023
Former [2024/25]AL31.08.2022
DK31.08.2022
EE31.08.2022
ES31.08.2022
FI31.08.2022
HR31.08.2022
LT31.08.2022
LV31.08.2022
MC31.08.2022
NL31.08.2022
RO31.08.2022
RS31.08.2022
SE31.08.2022
SI31.08.2022
SK31.08.2022
SM31.08.2022
NO30.11.2022
GR01.12.2022
IS31.12.2022
PT02.01.2023
IE29.05.2023
LU29.05.2023
BE31.05.2023
CH31.05.2023
LI31.05.2023
Former [2024/21]AL31.08.2022
DK31.08.2022
EE31.08.2022
ES31.08.2022
FI31.08.2022
HR31.08.2022
LT31.08.2022
LV31.08.2022
MC31.08.2022
NL31.08.2022
RO31.08.2022
RS31.08.2022
SE31.08.2022
SI31.08.2022
SK31.08.2022
SM31.08.2022
NO30.11.2022
GR01.12.2022
IS31.12.2022
PT02.01.2023
IE29.05.2023
LU29.05.2023
CH31.05.2023
LI31.05.2023
Former [2024/09]AL31.08.2022
DK31.08.2022
EE31.08.2022
ES31.08.2022
FI31.08.2022
HR31.08.2022
LT31.08.2022
LV31.08.2022
MC31.08.2022
NL31.08.2022
RO31.08.2022
RS31.08.2022
SE31.08.2022
SI31.08.2022
SK31.08.2022
SM31.08.2022
NO30.11.2022
GR01.12.2022
IS31.12.2022
PT02.01.2023
LU29.05.2023
CH31.05.2023
LI31.05.2023
Former [2024/08]AL31.08.2022
DK31.08.2022
EE31.08.2022
ES31.08.2022
FI31.08.2022
HR31.08.2022
LT31.08.2022
LV31.08.2022
MC31.08.2022
NL31.08.2022
RO31.08.2022
RS31.08.2022
SE31.08.2022
SI31.08.2022
SK31.08.2022
SM31.08.2022
NO30.11.2022
GR01.12.2022
IS31.12.2022
PT02.01.2023
LU29.05.2023
Former [2023/37]AL31.08.2022
DK31.08.2022
EE31.08.2022
ES31.08.2022
FI31.08.2022
HR31.08.2022
LT31.08.2022
LV31.08.2022
NL31.08.2022
RO31.08.2022
RS31.08.2022
SE31.08.2022
SI31.08.2022
SK31.08.2022
SM31.08.2022
NO30.11.2022
GR01.12.2022
IS31.12.2022
PT02.01.2023
Former [2023/30]AL31.08.2022
DK31.08.2022
EE31.08.2022
ES31.08.2022
FI31.08.2022
HR31.08.2022
LT31.08.2022
LV31.08.2022
NL31.08.2022
RO31.08.2022
RS31.08.2022
SE31.08.2022
SK31.08.2022
SM31.08.2022
NO30.11.2022
GR01.12.2022
IS31.12.2022
PT02.01.2023
Former [2023/29]AL31.08.2022
DK31.08.2022
EE31.08.2022
ES31.08.2022
FI31.08.2022
HR31.08.2022
LT31.08.2022
LV31.08.2022
RO31.08.2022
RS31.08.2022
SE31.08.2022
SK31.08.2022
SM31.08.2022
NO30.11.2022
GR01.12.2022
IS31.12.2022
PT02.01.2023
Former [2023/23]DK31.08.2022
EE31.08.2022
ES31.08.2022
FI31.08.2022
HR31.08.2022
LT31.08.2022
LV31.08.2022
RO31.08.2022
RS31.08.2022
SE31.08.2022
SK31.08.2022
SM31.08.2022
NO30.11.2022
GR01.12.2022
IS31.12.2022
PT02.01.2023
Former [2023/22]DK31.08.2022
ES31.08.2022
FI31.08.2022
HR31.08.2022
LT31.08.2022
LV31.08.2022
RO31.08.2022
RS31.08.2022
SE31.08.2022
SM31.08.2022
NO30.11.2022
GR01.12.2022
IS31.12.2022
PT02.01.2023
Former [2023/21]DK31.08.2022
FI31.08.2022
HR31.08.2022
LT31.08.2022
LV31.08.2022
RS31.08.2022
SE31.08.2022
SM31.08.2022
NO30.11.2022
GR01.12.2022
IS31.12.2022
Former [2023/20]FI31.08.2022
HR31.08.2022
LT31.08.2022
LV31.08.2022
RS31.08.2022
SE31.08.2022
SM31.08.2022
NO30.11.2022
GR01.12.2022
IS31.12.2022
Former [2023/12]FI31.08.2022
HR31.08.2022
LT31.08.2022
LV31.08.2022
RS31.08.2022
SE31.08.2022
NO30.11.2022
GR01.12.2022
IS31.12.2022
Former [2023/10]FI31.08.2022
HR31.08.2022
LT31.08.2022
LV31.08.2022
RS31.08.2022
SE31.08.2022
NO30.11.2022
GR01.12.2022
Former [2023/09]FI31.08.2022
LT31.08.2022
LV31.08.2022
RS31.08.2022
SE31.08.2022
NO30.11.2022
Former [2023/08]FI31.08.2022
LT31.08.2022
RS31.08.2022
SE31.08.2022
NO30.11.2022
Documents cited:Search[A]DE33779  ;
 [X]US1664553  (HAMMOND JR JOHN HAYS);
 [XI]US2007048708  (LEE ERIC [US])
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.