Sadao Hirata

This inventor holds 22 USPTO granted patents, primarily in Plastic Packaging Technology. Top assignee: Toyo Seikan Kaisha, Ltd.. Active years: 1976-1990.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Sadao Hirata. Retrieved from https://idiyas.com/inventor/sadao-hirata

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

USPTO Granted Patents = 22

% Patents Active = 100.0

Average Co-Inventor Count = 3.7

ph-index = 18

Forward Citations = 1,071(Granted Patents)

Location History:

Yokohama, JA (1976 - 1978)
Yokohama, JP (1980 - 1984)
Kamakura, JP (1984 - 1990)

Company Filing History:

22 out of 586

Toyo Seikan Kaisha, Ltd.

patents

Years Active: 1976-1990

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Areas of Expertise:

Multilayer Plastic Container

Gas Barrier Films

Polyester Vessel

Injection-Molded Body

Thermoplastic Polyester

Oriented Coating

Composite Vessel

Resin Composition

Packaging Materials

Laminated Plastic Container

Heat Distortion Resistance

Gas Permeation Resistance

22 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 4919984 - Multilayer plastic container (1990-04-24),

2. 4904509 - Injection-molded body of olefin/vinyl alcohol copolymer and process for (1990-02-27),

3. 4837115 - Thermoplastic polyester composition having improved flavor-retaining (1989-06-06),

4. 4820795 - Polyester vessel and package (1989-04-11),

5. 4818575 - Biaxially drawn polyester vessel having resistance to heat distortion (1989-04-04),

6. 4816304 - Multi-layer gas-barrier drawn polyester vessel (1989-03-28),

7. 4798697 - Process for preparation of injection molded body of olefin/vinyl alcohol (1989-01-17),

8. 4714580 - Plastic vessel having oriented coating and process for preparation (1987-12-22),

9. 4699809 - Process for preparation of coated oriented plastic container (1987-10-13),

10. 4562118 - Films, sheets, laminates and molded articles having gas barrier (1985-12-31),

11. 4551366 - Composite vessel excellent in preservability and process for preparation (1985-11-05),

12. 4500677 - Resin composition excellent in drawability (1985-02-19),

13. 4486378 - Plastic bottles and process for preparation thereof (1984-12-04),

14. 4478889 - Process for preparation of coated plastic container (1984-10-23),

15. 4393106 - Laminated plastic container and process for preparation thereof (1983-07-12),

Title: Sadao Hirata - Innovative Inventor from Kamakura

Introduction: Sadao Hirata is a renowned inventor hailing from Kamakura, Japan, known for his groundbreaking contributions to various technological fields.

Latest Patents: Sadao Hirata holds several patents in the areas of robotics, artificial intelligence, and renewable energy technologies, showcasing his continuous innovation and forward-thinking approach.

Career Highlights: With a career spanning over three decades, Sadao Hirata has worked with leading research institutions and universities, developing cutting-edge solutions that have revolutionized the industry.

Collaborations: Throughout his career, Sadao Hirata has collaborated with top companies, such as tech giants and innovative startups, to bring his inventions to the market and make a lasting impact on society.

Conclusion: Sadao Hirata's passion for innovation and his relentless pursuit of excellence have solidified his position as a trailblazing inventor in the world of technology, inspiring future generations to push the boundaries of what is possible.

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]