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For the Inventor, By the Inventor

Yokkaichi, Japan

Takeo Shimada

This inventor holds 10 USPTO granted patents. Top assignee: Mitsubishi Petrochemical Company Limited. Active years: 1983-1992.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takeo Shimada. Retrieved from https://idiyas.com/inventor/takeo-shimada

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

USPTO Granted Patents = 10

% Patents Active = 100.0

Average Co-Inventor Count = 4.5

ph-index = 3

Forward Citations = 157(Granted Patents)


Location History:

  • Mie, JP (1986 - 1989)
  • Yokkaichi, JP (1983 - 1992)

Company Filing History:

goldMedal10 out of 546 
 
Mitsubishi Petrochemical Company Limited
 patents

Years Active: 1983-1992

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10 patents (USPTO):Explore Patents
1. 5086131 - Process for production of polyethylene (1992-02-04),
2. 4871819 - Ethylene copolymer and process for the production thereof (1989-10-03),
3. 4802892 - Fuel oil additive and fuel oil having improved flowability (1989-02-07),
4. 4778866 - Ethylene copolymer (1988-10-18),
5. 4762889 - Water absorptive resin compositions and process for producing the same (1988-08-09),
6. 4719270 - Process for production of polyethylene (1988-01-12),
7. 4617365 - Ethylene copolymer (1986-10-14),
8. 4530983 - Process for polymerizing ethylene (1985-07-23),
9. 4413066 - Crosslinkable polyethylene resin compositions (1983-11-01),
10. 4405774 - Ethylene copolymer (1983-09-20),

Title: Takeo Shimada: Innovator in Polyethylene Production

Introduction

Takeo Shimada is a prominent inventor based in Yokkaichi, Japan. He has made significant contributions to the field of polymer chemistry, particularly in the production of polyethylene. With a total of 10 patents to his name, Shimada's work has had a lasting impact on the industry.

Latest Patents

Shimada's latest patents include a novel process for the production of polyethylene. This process involves polymerizing ethylene or a mixture of ethylene and a copolymerizable comonomer in the presence of a Ziegler-type catalyst at a pressure of 200 atm or more and at a temperature of 125°C or more. An organic peroxide is added to the resulting polymerization product taken out of a reaction zone to deactivate the remaining catalyst. This innovative approach prevents the formation of undesired oligomers or low-molecular polymers, ensuring that the polymerization reaction proceeds efficiently even with recycled monomers. Another notable patent is for an ethylene copolymer, which exhibits excellent dielectric breakdown characteristics and flexibility, making it suitable for use as an insulative material in superhigh voltage electric wire cables.

Career Highlights

Shimada is currently associated with Mitsubishi Petrochemical Company Limited, where he continues to advance his research and development efforts. His work has not only contributed to the company's success but has also positioned him as a leader in the field of polymer production.

Collaborations

Throughout his career, Takeo Shimada has collaborated with notable colleagues such as Shigekazu Hayashi and Yukimasa Miwa. These partnerships have fostered innovation and have led to the development of groundbreaking technologies in the polymer industry.

Conclusion

Takeo Shimada's contributions to polyethylene production and polymer chemistry are noteworthy. His innovative patents and collaborations have significantly advanced the field, making him a respected figure 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]
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