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For the Inventor, By the Inventor

Sennan, Japan

Hajime Hiratani

This inventor holds 18 USPTO granted patents, primarily in Biopharmaceutical Production. Top assignees: Japan Chemical Research Co., Ltd., Jcr Pharmaceuticals Co., Ltd., Noda Shokukin Kogyo Co., Ltd.. Active years: 1981-1995.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hajime Hiratani. Retrieved from https://idiyas.com/inventor/hajime-hiratani

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

USPTO Granted Patents = 18

% Patents Active = 100.0

Average Co-Inventor Count = 2.6

ph-index = 5

Forward Citations = 268(Granted Patents)


Location History:

  • Osaka, JP (1981 - 1994)
  • Sennan, JP (1984 - 1995)

Company Filing History:

goldMedal11 out of 12 
 
Japan Chemical Research Co., Ltd.
 patents
silverMedal6 out of 80 
 
Jcr Pharmaceuticals Co., Ltd.
 patents
bronzeMedal2 out of 3 
 
Noda Shokukin Kogyo Co., Ltd.
 patents
4. 1 out of 1,953 
 
Ajinomoto Co., Ltd.
 patents
5. 1 out of 7 
 
Zeria-Shinyaku Kogyo Kabushiki Kaisha
 patents
where one patent can have more than one assignee

Years Active: 1981-1995

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Areas of Expertise:
Superoxide Dismutase
Immunoglobulin A
Thrombolytic Agent
Herpesvirus Inhibitor
Leukocyte Interferons
Virus Removal
Urokinase
HCG
Erythropoietin
Human Kallikrein
Thiol Protease
Gastric Acid Secretion
18 patents (USPTO):Explore Patents
1. 5403731 - Process of producing modified superoxide dismutase (1995-04-04),
2. 5371196 - Process for producing secretory immunoglobulin A preparations (1994-12-06),
3. 5296223 - Subtilisin as an oral thrombolytic agent (1994-03-22),
4. 5283239 - Inhibitor of herpesvirus absorption (1994-02-01),
5. 5281577 - Inhibitor of the proliferation of herpes viruses and inhibitor of the (1994-01-25),
6. 5240864 - Method of assaying or analyzing subtypes of human leukocyte interferons (1993-08-31),
7. 5173415 - Process for removal of viruses from solutions of physiologically active (1992-12-22),
8. 4946785 - Method of suppressing the thermal degradation of urokinase (1990-08-07),
9. 4780209 - Process for concentrating and separating trypsin inhibitor and (1988-10-25),
10. 4676983 - Tumor cytostatic-citocidal factor from blood platelets (1987-06-30),
11. 4665161 - Process for producing highly purified HCG (1987-05-12),
12. 4609546 - Long-acting composition (1986-09-02),
13. 4528186 - Method of producing human epidermal growth factor (1985-07-09),
14. 4510248 - Process for concentrating and purifying human urinary kallikrein (1985-04-09),
15. 4500514 - Process for preparing a heat-stable aqueous solution of human urine (1985-02-19),

Title: Hajime Hiratani: Innovator in Biochemical Patents

Introduction

Hajime Hiratani is a prominent inventor based in Sennan, Japan. He has made significant contributions to the field of biochemistry, particularly in the development of modified superoxide dismutase and secretory immunoglobulin A preparations. With a total of 18 patents to his name, Hiratani's work has had a substantial impact on medical and pharmaceutical applications.

Latest Patents

Hiratani's latest patents include a process for producing modified superoxide dismutase. This innovative method allows for the production of a modified superoxide dismutase with a high and constant modification ratio in a shortened reaction period. The process involves reacting a polymeric carbonyldiimidazole derivative with superoxide dismutase in a specific buffer solution at controlled temperatures. The resulting modified superoxide dismutase exhibits a suitably prolonged blood half-life, making it valuable for therapeutic applications.

Another notable patent is the process for producing secretory immunoglobulin A preparations. This method ensures that the preparations are substantially free from viruses. The process involves heating secretory immunoglobulin A or subjecting it to a reaction with tri-n-butyl phosphate and a surfactant, followed by polymerization and precipitation of contaminants. This innovation enhances the safety and efficacy of immunoglobulin A preparations.

Career Highlights

Hajime Hiratani has worked with several reputable companies, including Japan Chemical Research Co., Ltd. and JCR Pharmaceuticals Co., Ltd. His experience in these organizations has allowed him to refine his expertise in biochemical research and patent development.

Collaborations

Hiratani has collaborated with notable colleagues such as Koichiro Nakanishi and Toyohiko Nishimura. These partnerships have contributed to the advancement of his research and the successful development of his patented processes.

Conclusion

Hajime Hiratani's contributions to the field of biochemistry through his innovative patents have established him as a key figure in the industry. His work continues to influence the development of therapeutic solutions, showcasing the importance of innovation in science and medicine.

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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