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For the Inventor, By the Inventor

Kawasaki, Japan

Eiji Tanaka

This inventor holds 13 USPTO granted patents. Top assignees: Mitsubishi Kasei Corporation, Mitsubishi Chemical Industries Limited, Ocean Cable Co., Ltd.. Active years: 1980-1994.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Eiji Tanaka. Retrieved from https://idiyas.com/inventor/eiji-tanaka-zeeuvvgt

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

Calculating rank
USPTO Granted Patents = 13

% Patents Active = 100.0

Average Co-Inventor Count = 3.6

ph-index = 6

Forward Citations = 70(Granted Patents)


Location History:

  • Kanagawa, JP (1991 - 1992)
  • Kawasaki, JP (1980 - 1994)

Company Filing History:

goldMedal7 out of 499 
 
Mitsubishi Kasei Corporation
 patents
silverMedal6 out of 614 
 
Mitsubishi Chemical Industries Limited
 patents
bronzeMedal1 out of 5 
 
Ocean Cable Co., Ltd.
 patents
where one patent can have more than one assignee

Years Active: 1980-1994

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13 patents (USPTO):Explore Patents
1. 5286540 - Blow molded container made of polypropylene resin (1994-02-15),
2. 5178926 - Hydrogenated vinyl aromatic hydrocarbon polymer composition and optical (1993-01-12),
3. 5128417 - 3-methylbutene-1 polymer, composition containing said polymer, and (1992-07-07),
4. 5073427 - Substrate of optical disc (1991-12-17),
5. 5061755 - Polypropylene composition and highly transparent polypropylene film made (1991-10-29),
6. 4970187 - Catalyst for producing an olefin polymer (1990-11-13),
7. 4902761 - Method for producing an olefin polymer (1990-02-20),
8. 4883848 - Method for producing an olefin polymer (1989-11-28),
9. 4824704 - 3-Methylbutene-1 polymer composition, process for its preparation and (1989-04-25),
10. 4726649 - Optical fiber cable (1988-02-23),
11. 4645797 - 3-Methylbutene-1 polymer composition and process for its production (1987-02-24),
12. 4368305 - Process for producing olefin polymers (1983-01-11),
13. 4226964 - Process for polymerizing olefin (1980-10-07),

Title: Eiji Tanaka: Innovator in Polymer Technology

Introduction

Eiji Tanaka is a prominent inventor based in Kawasaki, Japan. He has made significant contributions to the field of polymer technology, holding a total of 13 patents. His work primarily focuses on the development of advanced materials and medical instruments.

Latest Patents

Among his latest patents is a blow molded container made of polypropylene resin. This innovative container is produced through injection stretch blow molding of a polypropylene resin, which includes a propylene polymer composition containing from 0.0001 to 10% by weight of 3-methylbutene-1 polymer. Additionally, he has developed medical instruments that utilize this blow molded container. Another notable patent involves a hydrogenated vinyl aromatic hydrocarbon polymer composition, which showcases his expertise in creating advanced polymer materials.

Career Highlights

Eiji Tanaka has worked with leading companies in the industry, including Mitsubishi Kasei Corporation and Mitsubishi Chemical Industries Limited. His experience in these organizations has allowed him to refine his skills and contribute to groundbreaking innovations in polymer technology.

Collaborations

Throughout his career, Tanaka has collaborated with notable colleagues such as Yoshinori Suga and Yasuo Maruyama. These partnerships have further enhanced his research and development efforts in the field.

Conclusion

Eiji Tanaka's contributions to polymer technology and his impressive portfolio of patents highlight his role as a key innovator in the industry. His work continues to influence advancements in materials science and medical applications.

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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