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Yoshiyuki Shimizu
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Kawasaki, JP
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Patents Grants
last 30 patents
Information
Patent Grant
Objective lens unit for reflective fluorescence and reflective fluo...
Patent number
6,219,189
Issue date
Apr 17, 2001
Nikon Corporation
Kei Tomimatsu
G02 - OPTICS
Information
Patent Grant
Wide angle photographic lens
Patent number
5,844,729
Issue date
Dec 1, 1998
Nikon Corporation
Yoshiyuki Shimizu
G02 - OPTICS
Information
Patent Grant
Microscope objective lens and a microscope incorporating same
Patent number
5,757,552
Issue date
May 26, 1998
Nikon Corporation
Norio Murayama
G02 - OPTICS
Information
Patent Grant
Catadioptric reduction projection optical system
Patent number
5,668,673
Issue date
Sep 16, 1997
Nikon Corporation
Yutaka Suenaga
G02 - OPTICS
Information
Patent Grant
Super-wide field eyepiece
Patent number
5,579,167
Issue date
Nov 26, 1996
Nikon Corporation
Yasuhiro Oomura
G02 - OPTICS
Information
Patent Grant
Inverse telescopic wide angle lens
Patent number
5,477,388
Issue date
Dec 19, 1995
Nikon Corporation
Toshiro Ishiyama
G02 - OPTICS
Information
Patent Grant
Inverse telescopic wide angle lens
Patent number
5,321,554
Issue date
Jun 14, 1994
Nikon Corporation
Toshiro Ishiyama
G02 - OPTICS
Information
Patent Grant
Imaging optical system
Patent number
5,175,652
Issue date
Dec 29, 1992
Nikon Corporation
Yoshiyuki Shimizu
G02 - OPTICS
Information
Patent Grant
Microscope whose enlargement magnification is changeable
Patent number
4,946,265
Issue date
Aug 7, 1990
Nikon Corporation
Yoshiyuki Shimizu
G02 - OPTICS
Information
Patent Grant
Microscope objective lens
Patent number
4,666,256
Issue date
May 19, 1987
Nippon Kogaku K.K.
Yoshiyuki Shimizu
G02 - OPTICS
Information
Patent Grant
Objective lens for microscope of low magnification
Patent number
4,592,624
Issue date
Jun 3, 1986
Nippon Kogaku K.K.
Kazuo Ushida
G02 - OPTICS
Information
Patent Grant
Microscope objective lens
Patent number
4,588,264
Issue date
May 13, 1986
Nippon Kogaku K.K.
Yoshiyuki Shimizu
G02 - OPTICS
Information
Patent Grant
Condenser optical system for a microscope
Patent number
4,316,653
Issue date
Feb 23, 1982
Nippon Kogaku K.K.
Yoshiyuki Shimizu
G02 - OPTICS
Information
Patent Grant
Epidark illumination system
Patent number
4,186,993
Issue date
Feb 5, 1980
Nippon Kogaku K.K.
Yoshiyuki Shimizu
G02 - OPTICS