Inventor
KATO SHUJI
JP24 patents
⚠️ This page may combine multiple inventors who share the name “KATO SHUJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
8 patentsUS6768594B2Jul 27, 2004
Projection lens apparatus and rear projection type image display apparatus using the same
HITACHI LTD40 citations92
US7342724B2Mar 11, 2008
Rear projection type image display device
HITACHI LTD8 citations74
US7365907B2Apr 29, 2008
Rear projection image display apparatus
HITACHI LTD2 citations63
US7347566B2Mar 25, 2008
Projection lens unit and rear projection type image display system
HITACHI LTD0 citations52
US7244030B2Jul 17, 2007
Rear projection type image display device
HITACHI LTD0 citations52
US7210797B2May 1, 2007
Projector optical unit, projection type image display apparatus, and rear projection type image display apparatus
HITACHI LTD1 citations52
US7172292B2Feb 6, 2007
Projection lens unit and rear projection type image display system
HITACHI LTD0 citations52
US7404646B2Jul 29, 2008
Projection lens apparatus and rear projection type image display apparatus
HITACHI LTD0 citations38
MAXELL LTD
7 patentsUS10185060B2Jan 22, 2019
Free-form surface lens, method of designing free-form surface lens, free-form surface mirror, method of designing free-form surface mirror, and projection type video display apparatus
MAXELL LTD2 citations70
US10545334B2Jan 28, 2020
Flare-cut member, lens device, and optical device
MAXELL LTD1 citations62
US10746904B2Aug 18, 2020
Free-form surface lens, method of designing free-form surface lens, free-form surface mirror, method of designing free-form surface mirror, and projection type video display apparatus
MAXELL LTD0 citations49
US11561394B2Jan 24, 2023
Information display apparatus and reflecting mirror used therein
MAXELL LTD0 citations47
US10444606B2Oct 15, 2019
Projection lens assembly method and projection image display apparatus
MAXELL LTD0 citations40
US10265831B2Apr 23, 2019
Method for manufacturing lens, method for manufacturing molding die for lens, method for manufacturing mirror, method for manufacturing molding die for mirror, lens and molding die for lens
MAXELL LTD0 citations40
US10678017B2Jun 9, 2020
Projection image display device
MAXELL LTD0 citations38