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For the Inventor, By the Inventor

Tokyo, Japan

Hakuto Co., Ltd.

USPTO Granted Patents = 13

% Expired Patents = 30.8



Trademarks = 1

Forward Citations = 79

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20 inventors (with patents filed for the assignee):

goldMedal Junichi Nakajima (3 out of 3 patents)

silverMedal Seiji Tanizaki (3 out of 3 patents)

bronzeMedal Eiichi Miyake (3 out of 8 patents)

4.  Yasuhiro Nohata (2 out of 3 patents)

5.  Kazuo Tajima (1 out of 8 patents)

6.  Yoko Imai (1 out of 8 patents)

7.  Teruo Horiuchi (1 out of 4 patents)

8.  Ryuichiro Kurane (1 out of 20 patents)

9.  Norihiko Onishi (1 out of 1 patent)

10.  Yoshiharu Yamaguchi (1 out of 1 patent)

11.  Hiroshi Kurumado (1 out of 1 patent)

12.  Itsuro Murakami (1 out of 1 patent)

13.  Akira Togo (1 out of 1 patent)

14.  Takanori Shibata (1 out of 1 patent)

15.  Tomoo Suzuki (1 out of 3 patents)


13 patents:

1. 8551364 - Process for inhibiting polymerization of an aromatic vinyl compound (2013-10-08),
2. 8309109 - Cosmetic and method for production thereof (2012-11-13),
3. 8246858 - Process for inhibiting polymerization of an aromatic vinyl compound (2012-08-21),
4. 7202391 - Process for inhibiting polymerization of an aromatic vinyl compound (2007-04-10),
5. 6740528 - Method for measuring concentration of stable free radical compound (2004-05-25),
6. 5409571 - Scale deposit inhibitor for kraft digesters and method for controlling (1995-04-25),
7. 5175279 - Polysaccharide, and water absorbent, moisture absorbent or humectant and (1992-12-29),
8. 5154277 - Electronic parts separation mechanism (1992-10-13),
9. 4800611 - Plate cleaning apparatus and cleaning roller therefor (1989-01-31),
10. 4743325 - Method of sticking film sheet on panel surface (1988-05-10),
11. 4722629 - Adaptor for electronic element stick (1988-02-02),
12. 4659419 - Laminator for sticking film sheet on panel surface (1987-04-21),
13. 4264397 - Apparatus for sticking nonconductive tape having plating perforations to (1981-04-28),
Company Overview
Hakuto Co., Ltd. is a Tokyo-based company specializing in the development and manufacturing of advanced technology solutions. The organization focuses on various domains, including robotics, automation, and artificial intelligence, aiming to enhance operational efficiency across multiple industries. With a commitment to innovation, Hakuto engages in research that addresses contemporary challenges, positioning itself as a key player in the technology landscape of Japan and beyond.
Profile summary synthesized from public USPTO records and patent filings.

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USPTO Data Jan 1 1976 - Oct 20 2026

13 Patents

#1,663 in Tokyo

#3,752 in Japan

#45,081 in the World

Tokyo, JP
Tokyo, Japan

Hakuto Co., Ltd.

Forward Citations = 79

20 inventors:

goldMedal Junichi Nakajima (3 out of 3 patents)

silverMedal Seiji Tanizaki (3 out of 3 patents)

bronzeMedal Eiichi Miyake (3 out of 8 patents)

4.  Yasuhiro Nohata (2 out of 3 patents)

5.  Kazuo Tajima (1 out of 8 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Hakuto Co., Ltd.. Retrieved from https://idiyas.com/company/hakuto-company

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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