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For the Inventor, By the Inventor

Tokushima, Japan

Hisao Kakegawa

This inventor holds 15 USPTO granted patents, plus 1 CIPO patent. Top assignees: Nippon Hypox Laboratories Inc., Sawai Pharmaceutical Co., Ltd., Dainippon Ink and Chemicals, Incorporated. Active years: 1986-1993.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hisao Kakegawa. Retrieved from https://idiyas.com/inventor/hisao-kakegawa

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

USPTO Granted Patents = 15

% Patents Active = 100.0


Average Co-Inventor Count = 4.4

ph-index = 4

Forward Citations = 54(Granted Patents)


Company Filing History:

goldMedal9 out of 17 
 
Nippon Hypox Laboratories Inc.
 patents
silverMedal4 out of 28 
 
Sawai Pharmaceutical Co., Ltd.
 patents
bronzeMedal2 out of 630 
 
Dainippon Ink and Chemicals, Incorporated
 patents
4. 1 out of 1 
 
Kabushiki Kaisha Med-Creat
 patent
5. 1 out of 35 
 
Sunstar Kabushiki Kaisha
 patents
6. 1 out of 834,513 
Other
 patents
where one patent can have more than one assignee

Years Active: 1986-1993

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15 patents (USPTO):Explore Patents
1. 5264421 - Food composition (1993-11-23),
2. 5194445 - Ascorbic acid derivative (1993-03-16),
3. 5143648 - Ascorbic acid derivative and use as antioxidant (1992-09-01),
4. 5109025 - Therapeutic agent for penal disorders (1992-04-28),
5. 5061812 - Ascorbic acid derivative (1991-10-29),
6. 5034543 - Ascorbic acid derivative and use as antioxidants (1991-07-23),
7. 5011949 - Ascorbic acid derivative (1991-04-30),
8. 5006548 - Acrylamidobenzoic acid derivatives and their use (1991-04-09),
9. 5004742 - Benzothiazine-1,1-dioxide derivatives (1991-04-02),
10. 4898890 - Medicines for use in the therapy and prevention of kidney and liver (1990-02-06),
11. 4822791 - Pharmaceutical compositions of-2,2-1,1-[bis-2,2'-(3,1-benzoxazin-4-one)9 (1989-04-18),
12. 4755506 - Pharmaceutical compositions of (1988-07-05),
13. 4732916 - Novel guanidinomethylbenzoic acid derivatives (1988-03-22),
14. 4634777 - [(1,3-dioxo-1,3-propanediyl)diimino)]bisbenzoic acid derivatives (1987-01-06),
15. 4617292 - Pharmaceutical compositions and method for inhibiting histamine release (1986-10-14),

Title: The Innovative Legacy of Hisao Kakegawa

Introduction

Hisao Kakegawa, a pioneering inventor hailing from Tokushima, Japan, is renowned for his exceptional talent for problem-solving and his boundless passion for innovation. With a total of 15 patents to his name, Kakegawa's contributions have left an indelible mark in the realm of technology, inspiring future generations to push the boundaries of what is possible.

Latest Patents

Among his latest patents, Hisao Kakegawa has made significant advancements in the realm of food composition and Ascorbic acid derivatives. These innovations showcase his commitment to enhancing various aspects of everyday life through his inventive solutions.

Career Highlights

Having worked in esteemed companies such as Nippon Hypox Laboratories Inc. and Sawai Pharmaceutical Co., Ltd., Hisao Kakegawa has showcased his expertise in various fields, solidifying his reputation as a prolific inventor. His knack for identifying problems and creating innovative solutions has led to the successful filing of multiple patents throughout his career.

Collaborations

Throughout his career, Hisao Kakegawa has collaborated with esteemed colleagues such as Toshio Satoh and Hitoshi Matsumoto. These partnerships have not only enriched his projects but have also fostered a collaborative spirit that is essential in the world of innovation.

Conclusion

In conclusion, Hisao Kakegawa's legacy as a pioneering inventor is defined by his unwavering dedication to innovation and his remarkable problem-solving abilities. His numerous patents, coupled with his collaborative spirit and tenure in reputable companies, underscore his influence in the realm of technology. Kakegawa's journey serves as a beacon of inspiration for aspiring inventors, urging them to pursue excellence and think creatively in their pursuits.

Profile summary based on public USPTO records.
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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