Forward Citations = 83

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6 inventors (with patents filed for the assignee):

Zenji Hagiwara (8 out of 15 patents)

Masao Okubo (3 out of 19 patents)

Hiroshi Yamazaki (1 out of 105 patents)

4. Satoshi Ando (1 out of 60 patents)

5. Saburo Nohara (1 out of 6 patents)

6. Kazuo Kishimoto (1 out of 4 patents)

8 patents: Sort by Forward Citations

1. 5939087 - Antimicrobial polymer composition (1999-08-17),

2. 5827524 - Antimicrobial polymer composition (1998-10-27),

3. 5753250 - Crystalline antimicrobial composition (1998-05-19),

4. 5698212 - Antimicrobial polymer composition (1997-12-16),

5. 5413789 - Antimicrobial composition of aluminosilicate coated silica gel (1995-05-09),

6. 5298252 - Antimicrobial composition having resistance to heat and weathers (1994-03-29),

7. 5244667 - Silica-gel based antimicrobial composition having an antimicrobial coat (1993-09-14),

8. 4929431 - Process for producing amorphous aluminosilicates (1990-05-29),

Company Overview

Hagiwara Research Corp. is a leading provider of cutting-edge technology solutions for a wide range of industries. With a focus on innovation and quality, the company specializes in the design and production of electronic components, storage devices, and automotive solutions. Their commitment to excellence has made them a trusted partner for businesses around the world.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 13 2026

8 Patents

#17 in Shiga

#5,045 in Japan

Shiga, Japan

Hagiwara Research Corp.

Forward Citations = 83

6 inventors:

Zenji Hagiwara (8 out of 15 patents)

Masao Okubo (3 out of 19 patents)

Hiroshi Yamazaki (1 out of 105 patents)

4. Satoshi Ando (1 out of 60 patents)

5. Saburo Nohara (1 out of 6 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Hagiwara Research Corp.. Retrieved from https://idiyas.com/company/hagiwara-research

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]