Nakai; Takehiko

Patent Applications and Registrations

Patent applications and USPTO patent grants for Nakai; Takehiko.The latest application filed is for "optical element and optical system including the same".

Company Profile

0.32.23

Nakai; Takehiko - Utsunomiya JP
Nakai; Takehiko - Utsunomiya-shi JP
Nakai; Takehiko - Tochigi JP
Nakai; Takehiko - Kanagawa JP
Nakai; Takehiko - Tokyo JP
Nakai; Takehiko - Kawasaki JP
NAKAI, TAKEHIKO - KAWASAKI-SHI JP
Nakai; Takehiko - Yamato JP

*profile and listings may contain filings by different individuals or companies with the same name. Review application materials to confirm ownership/assignment.

Patent Activity

Patent	Date
Optical system and image pickup apparatus having same Grant 8,279,526 - Momoki , et al. October 2, 2	2012-10-02
Optical element having periodic structure and optical apparatus using the same Grant 8,009,355 - Nakai August 30, 2	2011-08-30
Optical Element And Optical System Including The Same App 20100302642 - Nakai; Takehiko	2010-12-02
Optical system and optical apparatus having the same Grant 7,626,772 - Nakai December 1, 2	2009-12-01
Diffractive optical element and optical system including the same Grant 7,612,941 - Nakai November 3, 2	2009-11-03
Diffractive optical element and optical system including the same Grant 7,554,735 - Nakai June 30, 2	2009-06-30
Optical System And Optical Apparatus Having The Same App 20090135503 - Nakai; Takehiko	2009-05-28
Optical System And Image Pickup Apparatus Having Same App 20090067053 - Momoki; Kazuhiko ; et al.	2009-03-12
Optical Element Having Periodic Structure And Optical Apparatus Using The Same App 20080130110 - Nakai; Takehiko	2008-06-05
Diffractive Optical Element And Optical System Including The Same App 20080043335 - Nakai; Takehiko	2008-02-21
Diffractive Optical Element And Optical System Including The Same App 20070297057 - Nakai; Takehiko	2007-12-27
Diffractive optical element and optical system including the same Grant 7,301,702 - Nakai November 27, 2	2007-11-27
Diffraction optical element Grant 7,236,302 - Nakai , et al. June 26, 2	2007-06-26
Diffractive optical element and optical system having the same Grant 7,075,722 - Nakai July 11, 2	2006-07-11
Diffraction optical element App 20050243423 - Nakai, Takehiko ; et al.	2005-11-03
Diffractive optical element and optical system including the same App 20050219702 - Nakai, Takehiko	2005-10-06
Diffractive optical element, and optical system and optical apparatus provide with the same Grant 6,930,833 - Nakai August 16, 2	2005-08-16
Diffractive optical element, and optical system and optical apparatus provided with the same Grant 6,927,915 - Nakai August 9, 2	2005-08-09
Diffractive optical element and optical system having the same Grant 6,873,463 - Nakai March 29, 2	2005-03-29
Diffraction optical element Grant 6,829,093 - Nakai December 7, 2	2004-12-07
Diffractive optical element and optical system having the same Grant 6,760,159 - Nakai July 6, 2	2004-07-06
Picture taking apparatus having diffractive optical element Grant 6,757,104 - Nakai June 29, 2	2004-06-29
Diffractive optical element, and optical system and optical apparatus provided with the same App 20030231396 - Nakai, Takehiko	2003-12-18
Diffractive optical element, and optical system and optical apparatus provided with the same App 20030231395 - Nakai, Takehiko	2003-12-18
Diffractive optical element and optical apparatus having the same Grant 6,650,477 - Nakai November 18, 2	2003-11-18
Diffractive optical element and optical system having the same Grant 6,624,943 - Nakai , et al. September 23, 2	2003-09-23
Diffractive optical element and optical system having the same Grant 6,560,019 - Nakai May 6, 2	2003-05-06
Diffractive Optical Element And Photographic Optical System Having The Same App 20020196545 - NAKAI, TAKEHIKO	2002-12-26
Image reading device Grant 6,486,974 - Nakai , et al. November 26, 2	2002-11-26
Diffractive optical element and optical system having the same App 20020080492 - Nakai, Takehiko	2002-06-27
Lens System Having Diffracting Surface And Refracting Surface And Optical Apparatus Using The Lens System App 20020051293 - NAKAI, TAKEHIKO ; et al.	2002-05-02
Diffractive optical element and optical system having the same App 20020036827 - Nakai, Takehiko	2002-03-28
Picture taking apparatus having diffractive optical element App 20020034011 - Nakai, Takehiko	2002-03-21
Diffractive optical element and optical apparatus having the same App 20020015232 - Nakai, Takehiko	2002-02-07
Diffractive Optical Element App 20020012170 - NAKAI, TAKEHIKO	2002-01-31
Diffractive optical element and optical system having the same App 20020003661 - Nakai, Takehiko	2002-01-10
Diffractive optical element and optical system having the same Grant 6,330,110 - Nakai December 11, 2	2001-12-11
Diffractive Optical Element And Optical System Having The Same App 20010038503 - NAKAI, TAKEHIKO	2001-11-08
Diffractive optical element and optical system having the same App 20010036012 - Nakai, Takehiko ; et al.	2001-11-01
Projection display apparatus, and information processing system and image recording/reproducing system using the same App 20010024267 - Kobayashi, Shuichi ; et al.	2001-09-27
Diffractive Optical Element And Optical System Having The Same App 20010015848 - NAKAI, TAKEHIKO	2001-08-23
Diffractive optical element and optical system having the same App 20010013975 - Nakai, Takehiko	2001-08-16
Diffractive optical element and optical system having the same Grant 6,262,846 - Nakai July 17, 2	2001-07-17
Invisible information detecting apparatus Grant 6,153,879 - Yoshinaga , et al. November 28, 2	2000-11-28
Diffractive optical element and optical system having the same Grant 6,122,104 - Nakai September 19, 2	2000-09-19
Image reading device with offset faces for visible and non-visible light sensors Grant 6,094,281 - Nakai , et al. July 25, 2	2000-07-25
Image processing apparatus and method, and image reading apparatus Grant 6,078,682 - Tanioka , et al. June 20, 2	2000-06-20
Photosensor with filter for cutting off the input of invisible information Grant 6,051,826 - Arimoto , et al. April 18, 2	2000-04-18
Non-visualized information recording medium and apparatus for detecting the same Grant 5,763,891 - Yoshinaga , et al. June 9, 1	1998-06-09
Optical modulators and color image display device employing the same Grant 5,737,113 - Kuramochi , et al. April 7, 1	1998-04-07
Image reading apparatus, copying apparatus, image processing apparatus, and image processing method Grant 5,617,187 - Hayashi , et al. April 1, 1	1997-04-01
Invisible information recorded medium Grant 5,503,904 - Yoshinaga , et al. April 2, 1	1996-04-02
Image processing apparatus having means for detecting non-visible light, and image processing method therefor Grant 5,481,334 - Arimoto , et al. January 2, 1	1996-01-02
Scanning optical apparatus Grant 5,187,606 - Kondo , et al. February 16, 1	1993-02-16
Image reading apparatus having a blazed diffraction grating Grant 5,113,067 - Nakai , et al. May 12, 1	1992-05-12

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