Inventor

Keiji Osawa

Inventor

Tokyo, JP

Overview

1995–2011

Patent span

Physics

Primary field (CPC G)

Patents· 12 as inventor

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

G02Bprimary

G02BOptical elements, systems or apparatus41%

H04NPictorial communication, e.g. television41%

G03BApparatus or arrangements for taking photographs or for projecting or viewing them18%

PatentTitleYear

7,929,858'Image-capturing apparatus, electronic still camera, method and apparatus for processing mounting surface of image-capturing apparatus and metal member contact structure'2011 7,075,719'Optical filter and optical device provided with this optical filter'2006 6,803,961'Image-capturing apparatus, electronic still camera, method and apparatus for processing mounting surface of image-capturing apparatus and metal member contact structure'2004 6,778,325'Optical filter and optical device provided with this optical filter'2004 6,650,474'Optical filter and optical device provided with this optical filter'2003 6,392,803'Optical filter and optical device provided with this optical filter'2002 6,327,085'Optical filter and optical device provided with this optical filter'2001 6,272,292'Electronic flash control apparatus'2001 5,875,360'Focus detection device'1999 5,678,074'Power focus device for a camera'1997 5,498,864'Camera focus detection apparatus detecting focus conditions among multiple areas within a photographic scene'1996 5,412,445'Power focus device for a camera'1995

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1995–2011Patents assigned to NIKON CORP (12)· patent assignee history

1995–2011Based in Tokyo, JP· patent location history

2001–2006Based in Chuou-ku, JP· patent location history

2001Based in Chuo-ku, JP· patent location history

2004Based in Saitama-shi, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
NIKON CORP	12	1995–2011

Locations

Location	Patents	Span
Tokyo, JP	6	1995–2011
Chuou-ku, JP	3	2001–2006
Saitama-shi, JP	2	2004
Chuo-ku, JP	1	2001