Inventor
OHSAWA YUTAKA
JP34 patents
⚠️ This page may combine multiple inventors who share the name “OHSAWA YUTAKA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ASAHI OPTICAL CO LTD
20 patentsUS5621495AApr 15, 1997
Representation of depth of field in camera
ASAHI OPTICAL CO LTD21 citations92
US4806748AFeb 21, 1989
Photo-electric conversion circuit
ASAHI OPTICAL CO LTD32 citations92
US5019852AMay 28, 1991
Representation of depth of field in camera
ASAHI OPTICAL CO LTD15 citations82
US5510875AApr 23, 1996
Representation of depth of field in camera
ASAHI OPTICAL CO LTD7 citations74
US4789777ADec 6, 1988
Photelectric amplifier having plural actuable feedback paths
ASAHI OPTICAL CO LTD17 citations74
US4999661AMar 12, 1991
Camera having selective functions
ASAHI OPTICAL CO LTD16 citations73
US6351605B1Feb 26, 2002
Remote control, auto-focus camera system
ASAHI OPTICAL CO LTD11 citations72
US5034769AJul 23, 1991
Interchangeable camera and interchangeable flash device
ASAHI OPTICAL CO LTD12 citations72
US5467200ANov 14, 1995
Data communication method between circuits
ASAHI OPTICAL CO LTD7 citations69
US6157785ADec 5, 2000
Roll-film camera
ASAHI OPTICAL CO LTD4 citations63
US4933704AJun 12, 1990
Electric power supply control device for camera
ASAHI OPTICAL CO LTD4 citations63
US4872069AOct 3, 1989
Electric power supply control device for camera
ASAHI OPTICAL CO LTD4 citations63
US4831400AMay 16, 1989
Stop-down signal adjusting circuit in automatic aperture control camera
ASAHI OPTICAL CO LTD3 citations63
US4737807AApr 12, 1988
Film rewinding device for camera
ASAHI OPTICAL CO LTD3 citations63
US6122451ASep 19, 2000
Setting apparatus for camera
ASAHI OPTICAL CO LTD3 citations62
US5365350ANov 15, 1994
Data communication method between circuits
ASAHI OPTICAL CO LTD4 citations61
US5283663AFeb 1, 1994
Data communication method between circuits
ASAHI OPTICAL CO LTD3 citations61
US5025276AJun 18, 1991
Control apparatus of single-lens reflex camera
ASAHI OPTICAL CO LTD5 citations60
US6167205ADec 26, 2000
Data-imprinting camera
ASAHI OPTICAL CO LTD0 citations52
US5887210AMar 23, 1999
Camera having motor driven mechanism
ASAHI OPTICAL CO LTD1 citations52
HOYA CORP
5 patentsUS7542092B2Jun 2, 2009
Digital camera with a battery checking device
HOYA CORP34 citations92
US7974530B2Jul 5, 2011
Diaphragm control apparatus of interchangeable lens camera
HOYA CORP2 citations62
US7970274B2Jun 28, 2011
Diaphragm control apparatus of interchangeable lens camera
HOYA CORP5 citations62
US7970273B2Jun 28, 2011
Diaphragm control apparatus of interchangeable lens camera
HOYA CORP2 citations62
US7555212B2Jun 30, 2009
Battery check device
HOYA CORP0 citations42