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For the Inventor, By the Inventor

Kanagawa, Japan

Hiroshi Ozawa

This inventor holds 20 USPTO granted patents, primarily in Optical Recording Media. Top assignees: Mitsui Toatsu Chemicals, Incorporated, Yamamoto Chemicals, Inc., Fuji Photo Film Company, Limited. Active years: 1976-2000.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiroshi Ozawa. Retrieved from https://idiyas.com/inventor/hiroshi-ozawa-rh80whtl

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

Calculating rank
USPTO Granted Patents = 20

% Patents Active = 100.0

Average Co-Inventor Count = 4.8

ph-index = 10

Forward Citations = 275(Granted Patents)


Location History:

  • Yokohama, JA (1976 - 1977)
  • Isehara, JP (1987 - 1989)
  • Kanagawa, JP (1983 - 1996)
  • Kanagawa-ken, JP (1996 - 1997)
  • Yokohama, JP (1979 - 2000)

Company Filing History:

goldMedal17 out of 1,379 
 
Mitsui Toatsu Chemicals, Incorporated
 patents
silverMedal5 out of 73 
 
Yamamoto Chemicals, Inc.
 patents
bronzeMedal1 out of 16,458 
 
Fuji Photo Film Company, Limited
 patents
4. 1 out of 2 
 
Mitsui Toatsu Kagaku Kabushiki Kaisha (Mitsui Toatsu Chem., Inc.)
 patents
5. 1 out of 1,234 
 
Nhk Spring Co., Ltd.
 patents
where one patent can have more than one assignee

Years Active: 1976-2000

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Areas of Expertise:
Optical Recording Medium
Fabrication Process
Electrophotographic Toner
Coating Resin Composition
Metallic Finish Coatings
Magnetic Tape Cartridge
Thermosetting Powders
Powder Coating
Diguanamines
Leader Tape
Cinnamic Acid
20 patents (USPTO):Explore Patents
1. 6043956 - Suspension for disk drive (2000-03-28),
2. 5596039 - Diguanamines and preparation process, derivatives and use thereof (1997-01-21),
3. 5545702 - Diguanamines and preparation process, derivatives and use thereof (1996-08-13),
4. 5536795 - Diguanamines and preparation process, derivatives and use thereof (1996-07-16),
5. 5480947 - Diguanamines and preparation process, derivatives and use thereof (1996-01-02),
6. 5332173 - Magnetic tape cartridge having retention of leader tape (1994-07-26),
7. 4859569 - Optical recording medium (1989-08-22),
8. 4798781 - Fabrication process of optical recording medium (1989-01-17),
9. 4770975 - Optical recording medium (1988-09-13),
10. 4766054 - Optical recording medium (1988-08-23),
11. 4719613 - Optical recording medium having a reflective recording layer including a (1988-01-12),
12. 4707425 - Optical recording method and media therefor (1987-11-17),
13. 4455360 - Electrophotographic toner comprising cinnamic acid (1984-06-19),
14. 4405671 - Optical information recording disk (1983-09-20),
15. 4202805 - Coating resin composition (1980-05-13),

Title: Hiroshi Ozawa: Innovator in Disk Drive Technology and Chemical Derivatives

Introduction: Hiroshi Ozawa, located in Kanagawa-ken, Japan, is a prominent inventor with a remarkable portfolio of 20 patents. His work has significantly impacted both the technology and chemical industries, showcasing his creativity and technical expertise.

Latest Patents: Among his latest innovations are two notable patents. The first is a suspension for disk drives, which features a uniquely designed load beam that contributes to enhanced performance. This invention incorporates a base plate and flexure, with tapered edges and strategic openings to improve flexibility and spring constants. The second patent involves novel diguanamine derivatives that have practical applications in adhesives, paints, and flame-retardant materials. These compounds show extensive potential for industrial utility due to their exceptional properties.

Career Highlights: Hiroshi Ozawa has worked with significant companies, including Mitsui Toatsu Chemicals, Incorporated and Yamamoto Chemicals, Inc. His contributions to these organizations have furthered advancements in his fields of expertise and have led to his numerous patents.

Collaborations: Throughout his career, Ozawa has collaborated with talented individuals such as Nobuki Kobayashi and Sumio Hirose. These partnerships have aided in the refinement and development of his innovative ideas, resulting in impactful inventions.

Conclusion: Hiroshi Ozawa's contributions to technology and chemistry are noteworthy, reflected in his 20 patents. His innovative spirit continues to pave the way for new advancements, ensuring his legacy as a respected inventor in his field.

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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