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For the Inventor, By the Inventor

Kanagawa, Japan

Yasuhiro Koike

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USPTO Granted Patents = 13


Forward Citations = 262

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21 inventors (with patents filed for the assignee):

goldMedal Yasuhiro Koike (5 out of 58 patents)

silverMedal Hiromi Sasako (4 out of 7 patents)

bronzeMedal Tsuyoshi Ishikawa (2 out of 99 patents)

4.  Shingo Ohkawa (2 out of 83 patents)

5.  Masaki Naritomi (2 out of 6 patents)

6.  Kayoko Watai (2 out of 14 patents)

7.  Takashi Oda (1 out of 11 patents)

8.  Norihide Sugiyama (1 out of 26 patents)

9.  Hiroshi Yamazaki (1 out of 20 patents)

10.  Akihito Mitsui (1 out of 5 patents)

11.  Naohiko Moriya (1 out of 7 patents)

12.  Tadahiro Sunaga (1 out of 21 patents)

13.  Takayoshi Yamauchi (1 out of 8 patents)

14.  Keisuke Kawashima (1 out of 3 patents)

15.  Toshitaka Torikai (1 out of 13 patents)


13 patents:

1. 9128238 - Optical material and molded product thereof (2015-09-08),
2. 8967880 - Optical collimator and optical connector using same (2015-03-03),
3. 6271312 - Graded-refractive-index optical plastic material of a fluoropolymer containing a material in a concentration gradient therein (2001-08-07),
4. 6155692 - Surface light source device of side light type (2000-12-05),
5. 6074070 - Surface light source device of side light type (2000-06-13),
6. 6049649 - Surface light source device of side-light type (2000-04-11),
7. 6027221 - Surface light source device of side light type and mold for light guide (2000-02-22),
8. 6024463 - Surface light source device of side light type with belt-like diffusible (2000-02-15),
9. 5997148 - Surface light source device of side light type (1999-12-07),
10. 5961197 - Surface light source device (1999-10-05),
11. 5916971 - Graded-refractive-index optical plastic material and method for its (1999-06-29),
12. 5788356 - Surface light source device of side light type (1998-08-04),
13. 5783636 - Graded-refractive-index optical plastic material and method for its (1998-07-21),
Company Overview
Yasuhiro Koike is a prominent entity based in Kanagawa, Japan, specializing in advanced technology solutions. The organization focuses on the development and manufacturing of innovative products across various sectors, including electronics and precision machinery. With a commitment to research and development, Yasuhiro Koike aims to enhance technological capabilities and drive advancements in its fields of expertise. The company's strategic initiatives are geared towards fostering innovation and maintaining a competitive edge in the global market.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 27 2026

13 Patents

#131 in Kanagawa

#3,754 in Japan

#45,104 in the World

Kanagawa, JP
Kanagawa, Japan

Yasuhiro Koike

Forward Citations = 262

21 inventors:

goldMedal Yasuhiro Koike (5 out of 58 patents)

silverMedal Hiromi Sasako (4 out of 7 patents)

bronzeMedal Tsuyoshi Ishikawa (2 out of 99 patents)

4.  Shingo Ohkawa (2 out of 83 patents)

5.  Masaki Naritomi (2 out of 6 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Yasuhiro Koike. Retrieved from https://idiyas.com/company/yasuhiro-koike

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

Data Sources: USPTO Patent Grant XML, Patent Center, EPO & CIPO • Normalized by IDiyas Innovation Graph. Methodology & provenance architecturePlease report any incorrect information to [email protected]
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