Yoshitsugu Kohno

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Miyamori, JP

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Patents Grantslast 30 patents

Information Patent Grant
Projection optical system
- Patent number 8,777,421
- Issue date Jul 15, 2014
- Ricoh Company, Ltd.
- Atsushi Takaura
- G02 - OPTICS
Information Patent Grant
Refractive optics and projection display apparatus
- Patent number 8,641,208
- Issue date Feb 4, 2014
- Sanyo Electric Co., Ltd.
- Ryuhei Amano
- G02 - OPTICS
Information Patent Grant
Projection optical apparatus
- Patent number 8,529,070
- Issue date Sep 10, 2013
- Ricoh Company, Ltd.
- Atsushi Takaura
- G02 - OPTICS
Information Patent Grant
Projection optical system and projection display device
- Patent number 8,087,789
- Issue date Jan 3, 2012
- Sanyo Electric Co., Ltd.
- Ryuhei Amano
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY
Information Patent Grant
Reading lens for scanner
- Patent number 5,311,364
- Issue date May 10, 1994
- Ricoh Company, Ltd.
- Yuichiro Kanoshima
- G02 - OPTICS

Patents Applicationslast 30 patents

Information Patent Application
PROJECTION OPTICAL SYSTEM
- Publication number 20130308106
- Publication date Nov 21, 2013
- Atsushi Takaura
- G02 - OPTICS
Information Patent Application
REFRACTIVE OPTICS AND PROJECTION DISPLAY APPARATUS
- Publication number 20110292355
- Publication date Dec 1, 2011
- RICOH OPTICAL INDUSTRIES CO., LTD.
- Ryuhei AMANO
- G02 - OPTICS
Information Patent Application
PROJECTION OPTICAL APPARATUS
- Publication number 20100195061
- Publication date Aug 5, 2010
- Atsushi Takaura
- G02 - OPTICS
Information Patent Application
PROJECTION OPTICAL SYSTEM AND PROJECTION DISPLAY DEVICE
- Publication number 20090153809
- Publication date Jun 18, 2009
- Sanyo Electric Co., Ltd.
- Ryuhei AMANO
- G03 - PHOTOGRAPHY CINEMATOGRAPHY ELECTROGRAPHY HOLOGRAPHY