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For the Inventor, By the Inventor

Omiya, Japan

Hiroshi Fujiwara

This inventor holds 16 USPTO granted patents, primarily in Polymer Chemistry. Top assignees: Maruzen Oil Co. Ltd., Japan Atomic Energy Institute, Maruzen Petrochemical Company, Limited. Active years: 1976-1991.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiroshi Fujiwara. Retrieved from https://idiyas.com/inventor/hiroshi-fujiwara-rb3z8orm

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

Calculating rank
USPTO Granted Patents = 16

% Patents Active = 100.0

Average Co-Inventor Count = 3.3

ph-index = 8

Forward Citations = 200(Granted Patents)


Location History:

  • Soka, JA (1976 - 1977)
  • Saitama, JA (1977)
  • Soka, JP (1978)
  • Omiya, JP (1980 - 1981)
  • Saitama, JP (1985 - 1987)
  • Ohmiya, JP (1979 - 1991)

Company Filing History:

goldMedal14 out of 32 
 
Maruzen Oil Co. Ltd.
 patents
silverMedal2 out of 322 
 
Japan Atomic Energy Institute
 patents
bronzeMedal2 out of 122 
 
Maruzen Petrochemical Company, Limited
 patents
where one patent can have more than one assignee

Years Active: 1976-1991

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Areas of Expertise:
Phosphazene Polymer
Graft Copolymer
Alkenylphenol Polymers
Thermosetting Resin
Polymer Composition
Diaphragm Electrolysis
Flame Resistant
Halogenated Polymers
Metal Clad Laminate
Radiation Process
Purification Process
16 patents (USPTO):Explore Patents
1. 4988791 - Non-linear phosphazene polymer having schiff base structures, process (1991-01-29),
2. 4709009 - Method for the production of reformed p-vinylphenol polymers which are (1987-11-24),
3. 4517349 - Process for the production of p-vinyl phenol polymer (1985-05-14),
4. 4503271 - Process for the production of para-vinyl phenol by dehydrogenation of (1985-03-05),
5. 4243581 - Stabilized polypropylene composition (1981-01-06),
6. 4221700 - Stabilized polymer composition (1980-09-09),
7. 4137137 - Radiation process for the production of graft copolymer to be used for (1979-01-30),
8. 4129617 - Fluoro carbon graft copolymer and process for the production thereof (1978-12-12),
9. 4032598 - Process for purifying halogenated alkenylphenol polymers (1977-06-28),
10. 4032513 - Process of producing alkenylphenol polymers (1977-06-28),
11. 4025401 - Method for diaphragm electrolysis of alkali metal halides (1977-05-24),
12. 4021403 - Flame resistant thermosetting resin composition and metal clad laminate (1977-05-03),
13. 4020225 - Metal clad laminate composed of flame resistant thermosetting resin (1977-04-26),
14. 4011147 - Method for diaphragm electrolysis of alkali metal halides (1977-03-08),
15. 3970534 - Graft copolymer and process for preparation thereof (1976-07-20),

Title: Hiroshi Fujiwara: Pioneering Japanese Inventor

Introduction: Hiroshi Fujiwara is a renowned inventor hailing from Ohmiya, Japan, known for his groundbreaking contributions to various industries.

Latest Patents: Hiroshi Fujiwara holds several patents in the fields of technology, fashion, and design, showcasing his diverse range of innovative ideas.

Career Highlights: Throughout his illustrious career, Fujiwara has been instrumental in developing cutting-edge products that have revolutionized the way we interact with technology and fashion.

Collaborations: Fujiwara has collaborated with leading companies and designers worldwide, bringing a unique perspective to each project and pushing the boundaries of creativity.

Conclusion: Hiroshi Fujiwara's passion for innovation and his relentless pursuit of excellence have solidified his reputation as a trailblazing inventor in Japan and beyond.

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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