logo

For the Inventor, By the Inventor

Shiga, Japan

Tomohiko Ishida

This inventor holds 4 USPTO granted patents. Top assignee: Sekisui Kaseihin Kogyo Kabushiki Kaisha. Active years: 1976-1978.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tomohiko Ishida. Retrieved from https://idiyas.com/inventor/tomohiko-ishida

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

USPTO Granted Patents = 4

% Patents Active = 100.0

Average Co-Inventor Count = 3.0

ph-index = 3

Forward Citations = 44(Granted Patents)


Location History:

  • Koga, JA (1976)
  • Shiga, JA (1977 - 1978)

Company Filing History:

goldMedal4 out of 86 
 
Sekisui Kaseihin Kogyo Kabushiki Kaisha
 patents

Years Active: 1976-1978

Loading Chart...
4 patents (USPTO):Explore Patents
1. 4080344 - Process for the production of expandable ethylenically unsaturated (1978-03-21),
2. 4065411 - Process for the preparation of expandable styrene polymer particles (1977-12-27),
3. 4049594 - Process for preparing expandable styrene polymer particles (1977-09-20),
4. 3994840 - Expandable styrene polymer particle composition (1976-11-30),

Title: Tomohiko Ishida: Innovator in Expandable Polymer Technology

Introduction

Tomohiko Ishida is a prominent inventor based in Shiga, Japan. He has made significant contributions to the field of expandable polymer technology, holding a total of 4 patents. His innovative approaches have advanced the production processes of various polymer materials.

Latest Patents

Ishida's latest patents include a process for the production of expandable ethylenically unsaturated polymer particles. This process utilizes a suspension stabilizer comprising calcium carbonate particles treated with resin acid. The method involves suspending ethylenically unsaturated polymer particles in water and impregnating them with an organic expanding agent that has a boiling point lower than the softening point of the polymer particles. Another notable patent is for the preparation of expandable styrene polymer particles. This process employs calcium hydroxide as a suspending agent to prevent agglomeration during the impregnation with an expanding agent.

Career Highlights

Ishida is currently associated with Sekisui Kaseihin Kogyo Kabushiki Kaisha, a company known for its innovative materials and technologies. His work has been instrumental in enhancing the efficiency and effectiveness of polymer production processes.

Collaborations

Some of his notable coworkers include Fumito Yamai and Toshiki Ikeda, who have collaborated with him on various projects within the company.

Conclusion

Tomohiko Ishida's contributions to expandable polymer technology reflect his dedication to innovation and excellence in the field. His patents continue to influence the industry and pave the way for future advancements.

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…