Inventor

Sadatoshi Takahashi

Inventor

Tokyo, JP

Overview

1985–2012

Patent span

Physics

Primary field (CPC G)

Patents· 26 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

G02Bprimary

G02BOptical elements, systems or apparatus83%

G03BApparatus or arrangements for taking photographs or for projecting or viewing them7%

B01DSeparation3%

H01MProcesses or means, e.g. batteries, for the direct conversion of chemical energy into electrical energy3%

Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution3%

PatentTitleYear

8,187,756'Fuel cell system'2012 5,253,005'Small-sized camera'1993 5,144,488'Zoom lens'1992 5,000,550'Wide-angle type zoom lens having inner-focus lens'1991 4,949,107'Camera having telescopic capability'1990 4,896,950'Zoom lens of high power varying ratio'1990 4,865,434'Zoom lens capable of selecting a focal length beyond a standard focal length range'1989 4,852,984'Telephoto lens of large aperture ratio'1989 4,830,477'Zoom lens capable of obtaining focal lengths beyond a variable focal length range'1989 4,810,072'Zoom lens'1989 4,781,446'Zoom lens having a capability of introducing special features into image formats'1988 4,749,266'Compact zoom lens having a large aperture and good aberation correction over an extended zooming range'1988 4,720,180'High magnification range zoom lens'1988 4,717,245'High relative aperture Gauss type lens'1988 4,711,534'Zoom lens able to obtain focal lengths beyond the zooming range'1987 4,696,553'Zoom lens having a large zoom ratio'1987 4,695,133'High range zoom lens'1987 4,690,513'Wide angle high range zoom lens'1987 4,687,303'Zoom lens system'1987 4,666,257'Compact zoom lens'1987 4,659,187'Zoom lens using elements made of plastic materials'1987 4,653,874'Zoom lens'1987 4,639,096'High range zoom lens'1987 4,629,294'Zoom lens'1986 4,527,858'Uniform speed scanning lens having a high resolving power'1985 4,515,446'Zoom objective'1985

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1985–1993Patents assigned to CANON KK (25)· patent assignee history

1985–1993Based in Tokyo, JP· patent location history

2012Patents assigned to FUJITA NOBUO (1)· patent assignee history

2012Patents assigned to MIYAMOTO TAISUKE (1)· patent assignee history

2012Patents assigned to SATOU MITUHIRO (1)· patent assignee history

2012Patents assigned to SEKINE HIROYUKI (1)· patent assignee history

2012Based in Nagoya, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
CANON KK	25	1985–1993
FUJITA NOBUO	1	2012
MIYAMOTO TAISUKE	1	2012
SATOU MITUHIRO	1	2012
SEKINE HIROYUKI	1	2012

Locations

Location	Patents	Span
Tokyo, JP	25	1985–1993
Nagoya, JP	1	2012