logo

For the Inventor, By the Inventor

Ichihara, Japan

Takashi Sumitomo

This inventor holds 21 USPTO granted patents, plus 1 CIPO patent, primarily in Styrene Resin Composition. Top assignees: Idemitsu Kosan Company, Limited, Idemitsu Petrochemical Co., Ltd., Kuraray Co., Ltd.. Active years: 1990-2003.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takashi Sumitomo. Retrieved from https://idiyas.com/inventor/takashi-sumitomo

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

Calculating rank
USPTO Granted Patents = 21

% Patents Active = 95.2

 

Average Co-Inventor Count = 4.5

ph-index = 9

Forward Citations = 290(Granted Patents)


Location History:

  • Icihara, JP (1999)
  • Ichihara, JP (1990 - 2001)
  • Chiba, JP (1992 - 2003)

Company Filing History:

goldMedal16 out of 2,283 
 
Idemitsu Kosan Company, Limited
 patents
silverMedal5 out of 555 
 
Idemitsu Petrochemical Co., Ltd.
 patents
bronzeMedal2 out of 1,872 
 
Kuraray Co., Ltd.
 patents
where one patent can have more than one assignee

Years Active: 1990-2003

Loading Chart...
Loading Chart...
Areas of Expertise:
Crystalline Polypropylene
Styrene Resin
Thermoplastic Resin
Rubber Particles
Polypropylene-Based Resins
Block Copolymer
Syndiotactic Polystyrene
Gas Barrier Properties
Moldings
Expanded Thermoplastic
Multi-Layer Material
Production Process
21 patents (USPTO):Explore Patents
1. 6639038 - Crystalline polypropylene and its moldings and films (2003-10-28),
2. 6201090 - Propylene/ethylene block copolymer (2001-03-13),
3. 6093768 - Syndiotactic styrene resin, thermoplastic resin and rubber (2000-07-25),
4. 6087435 - Composition of styrene resin, thermoplastic resin and rubber particles (2000-07-11),
5. 6051655 - Styrene-based resin composition with thermoplastic resin (2000-04-18),
6. 6046275 - Styrene resin with rubber polymer particles (2000-04-04),
7. 6043307 - Styrene-based resin composition (2000-03-28),
8. 6013726 - Composition of styrene resin, thermoplastic resin and rubber (2000-01-11),
9. 6008293 - Syndiotactic polystyrene and polycarbonate resin compositions (1999-12-28),
10. 5990217 - Styrene based resin composition (1999-11-23),
11. 5985973 - Polypropylene-based resins and polypropylene-based resin compositions (1999-11-16),
12. 5891951 - Styrene-based resin composition (1999-04-06),
13. 5395890 - Styrene-based resin composition (1995-03-07),
14. 5346950 - Resin composition (1994-09-13),
15. 5322869 - Styrene-based resin composition and process for production of moldings (1994-06-21),

Title: The Innovations of Takashi Sumitomo

Introduction: Takashi Sumitomo, an accomplished inventor based in Ichihara, Japan, has made significant contributions to the field of polymer technology. With a remarkable portfolio of 21 patents, his work primarily focuses on the development and enhancement of materials.

Latest Patents: Among his most recent patents are innovations in crystalline polypropylene and its moldings and films, as well as advancements in propylene/ethylene block copolymers. These inventions reflect Sumitomo's commitment to improving material properties for various applications.

Career Highlights: Throughout his career, Takashi Sumitomo has held positions at notable companies such as Idemitsu Kosan Company, Limited, and Idemitsu Petrochemical Co., Ltd. His work has led to pivotal developments in polymer science, showcasing his expertise and innovative spirit.

Collaborations: Sumitomo has collaborated with several notable figures in the industry, including Keisuke Funaki and Akikazu Nakano. These partnerships have furthered his research and propelled advancements in his field.

Conclusion: Takashi Sumitomo’s contributions to polymer technology and innovation illustrate the impact of dedicated inventors in advancing material science. His extensive patent portfolio not only highlights his creativity but also serves as a foundation for future discoveries in the industry.

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]
Loading…