Inventor
IMAI TOSHIHIRO
JP65 patents
⚠️ This page may combine multiple inventors who share the name “IMAI TOSHIHIRO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
OLYMPUS OPTICAL CO
32 patentsUS4036218AJul 19, 1977
Endoscope
OLYMPUS OPTICAL CO63 citations95
US4721371AJan 26, 1988
Variable focal length lens system
OLYMPUS OPTICAL CO32 citations93
US4037938AJul 26, 1977
Retrofocus-type objective for endoscopes
OLYMPUS OPTICAL CO49 citations93
US4025155AMay 24, 1977
Image-transmitting optical system
OLYMPUS OPTICAL CO34 citations93
US4662723AMay 5, 1987
Flare stop for a large aperture ratio zoom lens system
OLYMPUS OPTICAL CO22 citations82
US4101196AJul 18, 1978
Objective optical system for endoscopes
OLYMPUS OPTICAL CO20 citations82
US3936149AFeb 3, 1976
Non-homogeneous objective lens having an aperture diaphragm
OLYMPUS OPTICAL CO23 citations82
US4113354ASep 12, 1978
Single-lens reflex optical system for an endoscope
OLYMPUS OPTICAL CO21 citations81
US4042295AAug 16, 1977
Retrofocus-type objective for endoscopes
OLYMPUS OPTICAL CO31 citations81
US4787719ANov 29, 1988
Zoom lens system
OLYMPUS OPTICAL CO17 citations74
US4730907AMar 15, 1988
Compact zoom lens system
OLYMPUS OPTICAL CO7 citations74
US4506958AMar 26, 1985
Compact zoom lens system
OLYMPUS OPTICAL CO15 citations74
US4435049AMar 6, 1984
Telephoto lens system
OLYMPUS OPTICAL CO15 citations74
US4412127AOct 25, 1983
In-focus detector for binocular stereoscope
OLYMPUS OPTICAL CO9 citations74
US4396255AAug 2, 1983
Standard photographic lens system
OLYMPUS OPTICAL CO9 citations74
US4390250AJun 28, 1983
Photographic lens system
OLYMPUS OPTICAL CO14 citations74
US4389099AJun 21, 1983
Photographic lens system
OLYMPUS OPTICAL CO15 citations74
US4303313ADec 1, 1981
Photographic lens system
OLYMPUS OPTICAL CO9 citations74
US4264138AApr 28, 1981
Photographic lens system
OLYMPUS OPTICAL CO8 citations74
US4235521ANov 25, 1980
Photographic lens system
OLYMPUS OPTICAL CO10 citations74
US4221467ASep 9, 1980
Wide-angle photographic camera lens system
OLYMPUS OPTICAL CO8 citations74
US4204747AMay 27, 1980
Method of focussing in a photographic lens system
OLYMPUS OPTICAL CO10 citations74
US4099843AJul 11, 1978
Compact large-aperture photographic lens system with long back focal length
OLYMPUS OPTICAL CO16 citations74
US4017150AApr 12, 1977
Wide-angle illuminating optical system with light guide
OLYMPUS OPTICAL CO16 citations74
US4063802ADec 20, 1977
Telephotographic lens system having short total length
OLYMPUS OPTICAL CO7 citations73
US4562344ADec 31, 1985
Automatic focus detecting mechanism for endoscopes
OLYMPUS OPTICAL CO17 citations71
US4747677AMay 31, 1988
Lens system having aberrations corrected at near distance focusing
OLYMPUS OPTICAL CO5 citations63
US4603948AAug 5, 1986
Large-aperture wide-angle zoom lens system
OLYMPUS OPTICAL CO4 citations63
US4504124AMar 12, 1985
Zoom lens system
OLYMPUS OPTICAL CO3 citations63
US4352544AOct 5, 1982
Wide-angle photographic camera lens system
OLYMPUS OPTICAL CO3 citations63
US4232944ANov 11, 1980
Standard photographic lens
OLYMPUS OPTICAL CO2 citations63
US3953112AApr 27, 1976
Behind-stop type compact photographic lens system
OLYMPUS OPTICAL CO5 citations63
ISHIKAWA GASKET
8 patentsUS7900936B2Mar 8, 2011
Metal gasket
ISHIKAWA GASKET8 citations84
US7377520B2May 27, 2008
Cylinder head gasket
ISHIKAWA GASKET11 citations84
US7306236B2Dec 11, 2007
Cylinder head gasket
ISHIKAWA GASKET9 citations74
US8342537B2Jan 1, 2013
Metal laminate gasket
ISHIKAWA GASKET2 citations63
US8016296B2Sep 13, 2011
Metal laminate gasket
ISHIKAWA GASKET3 citations63
US8011674B2Sep 6, 2011
Metal laminate gasket
ISHIKAWA GASKET4 citations63
US7669859B2Mar 2, 2010
Cylinder head gasket
ISHIKAWA GASKET6 citations63
US7665741B2Feb 23, 2010
Laminate-type gasket
ISHIKAWA GASKET5 citations63
IMAI TOSHIHIRO
3 patentsNIPPON DENSO CO
2 patentsTOSHIBA KK
2 patentsSONY CORP
1 patentDENSO CORP
1 patentTOSHIBA TEC KK
1 patentShowing the top 50 of 65 patents by PatentIndex Score.