P

Inventor

SEKIGUCHI HIROSHI

JP65 patents
⚠️ This page may combine multiple inventors who share the name “SEKIGUCHI HIROSHI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

DAINIPPON PRINTING CO LTD

17 patents
US4752116AJun 21, 1988

Transmission type projection screen

DAINIPPON PRINTING CO LTD25 citations93
US7835078B2Nov 16, 2010

Reflecting screen, method of manufacturing the same, and reflection-type projection system

DAINIPPON PRINTING CO LTD21 citations92
US7116476B2Oct 3, 2006

Fresnel lens, screen, image displaying device, lens forming mold manufacturing method and lens manufacturing method

DAINIPPON PRINTING CO LTD23 citations91
US7317572B2Jan 8, 2008

Fresnel lens sheet, rear projection screen and rear projection display

DAINIPPON PRINTING CO LTD10 citations84
US7072109B2Jul 4, 2006

Projection screen and projection display

DAINIPPON PRINTING CO LTD17 citations84
US6707605B2Mar 16, 2004

Fresnel lens sheet and transmission-type projection screen

DAINIPPON PRINTING CO LTD16 citations84
US7245427B2Jul 17, 2007

Fresnel lens sheet holding structure and rear projection display

DAINIPPON PRINTING CO LTD8 citations74
US6836363B2Dec 28, 2004

Rear projection screen and rear projection type display including the same

DAINIPPON PRINTING CO LTD8 citations74
US10365489B2Jul 30, 2019

Semi-transmissive reflection sheet, light guide plate and display device

DAINIPPON PRINTING CO LTD3 citations73
US12108195B2Oct 1, 2024

Reflective screen and image display device

DAINIPPON PRINTING CO LTD2 citations71
US7453638B2Nov 18, 2008

Fresnel lens sheet, rear projection screen, and rear-projection-type display

DAINIPPON PRINTING CO LTD2 citations63
US7277227B2Oct 2, 2007

Fresnel lens sheet, transmission screen provided with the same and rear projection display

DAINIPPON PRINTING CO LTD4 citations63
US6961176B2Nov 1, 2005

Fresnel lens sheet, rear projection screen and rear projection display

DAINIPPON PRINTING CO LTD6 citations63
US6947225B2Sep 20, 2005

Fresnel lens sheet, process of producing Fresnel lens sheet, mold for use in the production process, and rear projection screen comprising the Fresnel lens sheet

DAINIPPON PRINTING CO LTD6 citations63
US11695904B2Jul 4, 2023

Reflective screen and image display device

DAINIPPON PRINTING CO LTD0 citations61
US6943948B2Sep 13, 2005

Fresnel lens sheet and transmission type projection screen

DAINIPPON PRINTING CO LTD4 citations60
US9453958B2Sep 27, 2016

Light guide plate and illumination apparatus

DAINIPPON PRINTING CO LTD0 citations52

HOYA CORP

6 patents

FUJITSU LTD

5 patents

KANARS DATA CORP

4 patents

GOTO MASAHIRO

3 patents

ROHM CO LTD

3 patents

SONY CORP

2 patents

MITSUBISHI ELECTRIC CORP

1 patent

UEDA KENICHI

1 patent

JAPAN AVIATION ELECTRON

1 patent

GOTOU MASAHIRO

1 patent

FUJI HEAVY IND LTD

1 patent

JATCO CORP

1 patent

ASANO EIJI

1 patent

GS YUASA INT LTD

1 patent

JATCO LTD

1 patent

YAMAMOTO HIROSHI

1 patent

Showing the top 50 of 65 patents by PatentIndex Score.