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USPTO Data Jan 1 1976 - Oct 27 2026
29 Patents
#50 in Aichi
#2,366 in Japan
#22,581 in the World
Hoyu Co., Ltd.
Forward Citations = 135
52 inventors:
Hoyu Co., Ltd.
Calculating rank
% Expired Patents = 44.8
CIPO Patents = 1
EPO Patents = 10
Trademarks = 4
Forward Citations = 135
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52 inventors (with patents filed for the assignee):
Yosuke Kobayashi (4 out of 4 patents)
Yoshiyuki Uesawa (4 out of 4 patents)
Nana Morishita (3 out of 3 patents)
4. Emi Mori (3 out of 3 patents)
5. Yuki Sasao (3 out of 3 patents)
6. Yasue Yamazaki (3 out of 3 patents)
7. Kayoko Matsunaga (2 out of 5 patents)
8. Akiko Yagami (2 out of 5 patents)
9. Masashi Nakamura (2 out of 3 patents)
10. Yuji Aoki (2 out of 3 patents)
11. Hiroki Takahashi (2 out of 2 patents)
12. Fumiaki Sato (2 out of 2 patents)
13. Mikinobu Hasegawa (2 out of 2 patents)
14. Yoshihiro Konno (2 out of 2 patents)
15. Masakatsu Hata (2 out of 2 patents)
Core Competencies:
Soybean Allergy Antigen
Quail Egg Allergy Antigen
Oxidative Hair Dye
Hair Dye Composition
Cosmetic Preparation
Hair Treatment Method
Double-Aerosol Device
Powder Hair Dye
Dispenser for Aerosol Container
Hair Cosmetic Composition
Stabilizing Color Tone
Two-Fluid Dispenser
29 patents:
Company Overview
Hoyu Co., Ltd. is a prominent Japanese company specializing in the development and manufacturing of hair color products and related cosmetics. With a strong focus on innovation, Hoyu combines traditional techniques with modern technology to create high-quality solutions for both professional and consumer markets. The company is committed to research in hair care and color formulation, ensuring that its products meet the evolving needs of customers while maintaining safety and efficacy standards.
Profile summary synthesized from public USPTO records and patent filings.
IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Hoyu Co., Ltd.. Retrieved from https://idiyas.com/company/hoyu-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]
1 patent (CIPO):
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]
10 patents (EPO):
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]