Inventor

Nozomu Kitagishi

Inventor

Tokyo, JP

Overview

54→

Patents

1980–2007

Patent span

Physics

Primary field (CPC G)

Patents· 54 as inventor

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

G02Bprimary

G02BOptical elements, systems or apparatus70%

G03BApparatus or arrangements for taking photographs or for projecting or viewing them20%

H04NPictorial communication, e.g. television7%

G12BConstructional details of instruments, or comparable details of other apparatus, not otherwise provided for2%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests2%

PatentTitleYear

7,190,519'Plate-like polarizing element, a polarizing conversion unit provided with the element, and a projector provided with the unit'2007 7,038,722'Optical imaging system for suppressing the generation of red-toned ghosting particularly when there is background light'2006 5,751,480'Plate-like polarizing element, a polarizing conversion unit provided with the element, and a projector provided with the unit'1998 5,537,168'Projection optical apparatus comprising automatic adjustment unit'1996 5,303,087'Retrofocus type lens'1994 5,270,857'Optical system for stabilizing an image'1993 5,253,005'Small-sized camera'1993 5,231,431'Projection type display apparatus'1993 5,182,671'Variable magnification optical system having a capability of stabilizing the image'1993 5,179,473'Zoom lens'1993 5,124,839'Phase-type focusing screen'1992 5,096,288'Projection apparatus'1992 5,089,835'Phase-type diffusing plate'1992 5,069,537'Image deflecting device'1991 5,054,898'Compact high-range varifocal objectives'1991 5,011,272'Compact zoom lens'1991 4,974,950'Optical system for deflecting image'1990 4,974,947'Refractive index distribution type meniscus lens and optics'1990 4,955,715'Psuedo format camera'1990 4,949,107'Camera having telescopic capability'1990 4,907,868'Optical system for deflecting image'1990 4,907,866'Objective of variable focal length'1990 4,865,434'Zoom lens capable of selecting a focal length beyond a standard focal length range'1989 4,859,040'Optical system having gradient-index lens and method for correcting aberrations'1989 4,844,602'Optical system for deflecting image'1989 4,842,395'Finder of variable magnification'1989 4,842,386'Variable focal length objective'1989 4,830,477'Zoom lens capable of obtaining focal lengths beyond a variable focal length range'1989 4,810,070'Lens system having a good image performance for white light'1989 4,781,446'Zoom lens having a capability of introducing special features into image formats'1988 4,776,679'Objective of variable focal length'1988 4,752,121'Zoom lens'1988 4,711,534'Zoom lens able to obtain focal lengths beyond the zooming range'1987 4,695,133'High range zoom lens'1987 4,666,257'Compact zoom lens'1987 4,659,189'Zoom lens of reduced total length'1987 4,650,988'Image reading apparatus with an area-type beam splitter'1987 4,639,096'High range zoom lens'1987 4,629,294'Zoom lens'1986 4,615,603'Single lens reflex camera'1986 4,586,786'Area beam type splitter'1986 4,571,033'Zoom lens'1986 4,547,663'Focus detecting apparatus with a compensation mask'1985 4,536,073'Apparatus for detecting a condition of sharpest focus'1985 4,508,433'Telephoto objective'1985 4,500,188'Focusing device for a camera'1985 4,467,188'Device for splitting light from an objective lens'1984 4,420,226'Zoom lens of short total length'1983 4,367,463'Information mark display device'1983 4,348,084'Tele-photographic lens of large aperture ratio'1982 4,341,953'Focus detecting system'1982 4,310,231'Close-up copy photography apparatus'1982 4,241,983'Telephoto lens'1980 4,206,976'Compact telephoto lens'1980

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1980–2007Patents assigned to CANON KK (54)· patent assignee history

1980–1987Based in Kawasaki, JP· patent location history

1984–1986Based in Inagi, JP· patent location history

1985–2006Based in Tokyo, JP· patent location history

1985–1990Based in Kanagawa, JP· patent location history

1989–2007Based in Hachioji, JP· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
CANON KK	54	1980–2007

Locations

Location	Patents	Span
Tokyo, JP	31	1985–2006
Kawasaki, JP	9	1980–1987
Hachioji, JP	8	1989–2007
Kanagawa, JP	3	1985–1990
Inagi, JP	3	1984–1986