Takayuki ISAKA

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Tokyo, JP

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Patents Grantslast 30 patents

Information Patent Grant
Sound absorber, electronic device with sound absorbing device, and...
- Patent number 11,495,203
- Issue date Nov 8, 2022
- Ricoh Company, Ltd.
- Masahiro Ishida
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Sound absorber, electronic device with sound absorbing device, and...
- Patent number 10,540,953
- Issue date Jan 21, 2020
- Ricoh Company, Ltd.
- Masahiro Ishida
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Grant
Image forming apparatus with multiple image bearers
- Patent number 10,481,545
- Issue date Nov 19, 2019
- Ricoh Company, Ltd.
- Takayuki Isaka
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY

Patents Applicationslast 30 patents

Information Patent Application
SOUND ABSORBER, ELECTRONIC DEVICE WITH SOUND ABSORBING DEVICE, AND...
- Publication number 20200105237
- Publication date Apr 2, 2020
- RICOH COMPANY, LTD.
- Masahiro ISHIDA
- G10 - MUSICAL INSTRUMENTS ACOUSTICS
Information Patent Application
IMAGE FORMING APPARATUS
- Publication number 20180267455
- Publication date Sep 20, 2018
- RICOH COMPANY, LTD.
- Takayuki ISAKA
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Application
SOUND ABSORBER, ELECTRONIC DEVICE WITH SOUND ABSORBING DEVICE, AND...
- Publication number 20170221469
- Publication date Aug 3, 2017
- RICOH COMPANY, LTD.
- Masahiro ISHIDA
- G10 - MUSICAL INSTRUMENTS ACOUSTICS