Kumagai; Yoshihiro

Patent Applications and Registrations

Patent applications and USPTO patent grants for Kumagai; Yoshihiro.The latest application filed is for "optical fiber characteristics measurement apparatus and optical fiber characteristics measurement method".

Company Profile

0.18.15

Kumagai; Yoshihiro - Tokyo JP
Kumagai; Yoshihiro - Yokohama JP
Kumagai; Yoshihiro - Musashino N/A JP
KUMAGAI; Yoshihiro - Yokohama-shi JP
Kumagai; Yoshihiro - Musashino-shi JP
Kumagai; Yoshihiro - Niigata JP
Kumagai; Yoshihiro - Niigata Pref JP
Kumagai; Yoshihiro - Kitakanbara-gun JP
Kumagai, Yoshihiro - Kanagawa JP
Kumagai; Yoshihiro - Nakajoh-machi JP
Kumagai; Yoshihiro - Saitama 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 fiber characteristics measurement apparatus and optical fiber characteristics measurement method Grant 11,402,296 - Matsuura , et al. August 2, 2	2022-08-02
Optical Fiber Characteristics Measurement Apparatus And Optical Fiber Characteristics Measurement Method App 20210318147 - MATSUURA; Satoshi ; et al.	2021-10-14
Apparatus For Producing Ultrafine Fibers App 20200407881 - Ichibayashi; Taku ; et al.	2020-12-31
Apparatus For Manufacturing Ultrafine Fiber And Method For Manufacturing Ultrafine Fiber App 20200216981 - Ichibayashi; Taku ; et al.	2020-07-09
Method for producing concave-convex substrate using sol-gel method, sol used in same, method for producing organic EL element using same, and organic EL element obtained thereby Grant 9,221,214 - Takahashi , et al. December 29, 2	2015-12-29
Optical fiber characteristics measurement device and method Grant 9,109,977 - Kishi , et al. August 18, 2	2015-08-18
Manufacturing Method And Manufacturing Device For Optical Substrate Having Concavo-convex Pattern Using Film-shaped Mold, And Manufacturing Method For Device Provided With Optical Substrate App 20140357012 - TORIYAMA; Shigetaka ; et al.	2014-12-04
Method For Producing Concave-convex Substrate Using Sol-gel Method, Sol Used In Same, Method For Producing Organic El Element Using Same, And Organic El Element Obtained Thereby App 20140231776 - TAKAHASHI; Madoka ; et al.	2014-08-21
Optical fiber characteristic measuring device and method Grant 8,724,101 - Hotate , et al. May 13, 2	2014-05-13
Optical Fiber Characteristics Measurement Device And Method App 20130308123 - Kishi; Masato ; et al.	2013-11-21
Optical Fiber Characteristic Measuring Device And Method App 20110032517 - Hotate; Kazuo ; et al.	2011-02-10
Rear Surface Projection Type Screen and Rear Surface Projection Type Display Device App 20090002818 - Iwabu; Hiroki ; et al.	2009-01-01
Fresnel Lens Sheet, Rear Projection Type Screen and Rear Projection Type Image Display Unit App 20080013171 - Kumagai; Yoshihiro ; et al.	2008-01-17
Rear projection screen with shifted lens Grant 7,136,224 - Kumagai , et al. November 14, 2	2006-11-14
Rear projection screen and rear projection display apparatus Grant 7,061,676 - Kumagai , et al. June 13, 2	2006-06-13
Liquid crystal cell with twist angle from 180 to 270 degrees and twisted optical compensating element Grant 7,019,804 - Kumagai , et al. March 28, 2	2006-03-28
Transparent screen App 20050117212 - Kumagai, Yoshihiro ; et al.	2005-06-02
Liquid crystal display App 20040246418 - Kumagai, Yoshihiro ; et al.	2004-12-09
Rear projection screen and rear projection display apparatus App 20040156103 - Kumagai, Yoshihiro ; et al.	2004-08-12
Complex diffraction device Grant 6,750,941 - Satoh , et al. June 15, 2	2004-06-15
Circular polarizer and liquid crystal display Grant 6,628,369 - Kumagai , et al. September 30, 2	2003-09-30
Circular polarizer and liquid crystal display App 20030090619 - Kumagai, Yoshihiro ; et al.	2003-05-15
Complex diffraction device App 20020101560 - Satoh, Yasushi ; et al.	2002-08-01
Laminated transparent structure for reflective display Grant 6,327,089 - Hosaki , et al. December 4, 2	2001-12-04
Rear projection screen incorporating a prism Grant 6,292,295 - Yamashita , et al. September 18, 2	2001-09-18
Optical device and Fresnel lens sheet Grant 6,282,034 - Onishi , et al. August 28, 2	2001-08-28
Optical pulse generator Grant 6,108,465 - Iida , et al. August 22, 2	2000-08-22
Lenticular lens sheet Grant 5,724,188 - Kumagai , et al. March 3, 1	1998-03-03
Rear-projection screen Grant 5,432,636 - Ishii , et al. July 11, 1	1995-07-11
Tensioner or toothed belts Grant 4,909,777 - Inoue , et al. March 20, 1	1990-03-20

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