Inventor
DOI YOSHIKAZU
16 patents
⚠️ This page may combine multiple inventors who share the name “DOI YOSHIKAZU”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
FUJI PHOTO OPTICAL CO LTD
15 patentsUS4472740ASep 18, 1984
Television camera system
FUJI PHOTO OPTICAL CO LTD27 citations92
US4598980AJul 8, 1986
Objective optical system for endoscope
FUJI PHOTO OPTICAL CO LTD34 citations90
US3945713AMar 23, 1976
Image rotating optical system
FUJI PHOTO OPTICAL CO LTD23 citations80
US4484799ANov 27, 1984
Wide angle zoom lens
FUJI PHOTO OPTICAL CO LTD8 citations73
US3961845AJun 8, 1976
Zoom lens system
FUJI PHOTO OPTICAL CO LTD8 citations73
US4589723AMay 20, 1986
Holographic endoscope
FUJI PHOTO OPTICAL CO LTD7 citations72
US4560254ADec 24, 1985
Zoom lens system
FUJI PHOTO OPTICAL CO LTD9 citations72
US4164752AAug 14, 1979
Optical system for color television cameras
FUJI PHOTO OPTICAL CO LTD15 citations72
US3951524AApr 20, 1976
Projection lens system for motion picture projector
FUJI PHOTO OPTICAL CO LTD16 citations72
US4149774AApr 17, 1979
Zoom lens system
FUJI PHOTO OPTICAL CO LTD14 citations71
US4195912AApr 1, 1980
Zoom lens system
FUJI PHOTO OPTICAL CO LTD11 citations68
US4294521AOct 13, 1981
Rear stop type zoom lens
FUJI PHOTO OPTICAL CO LTD2 citations62
US4245891AJan 20, 1981
Zoom lens system with a movable distortion-correcting element
FUJI PHOTO OPTICAL CO LTD3 citations61
US4298252ANov 3, 1981
Rear stop type lens system
FUJI PHOTO OPTICAL CO LTD1 citations51
US4158482AJun 19, 1979
Inverted telephoto type super-wide angle lens
FUJI PHOTO OPTICAL CO LTD1 citations51