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For the Inventor, By the Inventor

Kuga, Japan

Masayasu Yoshida

This inventor holds 8 USPTO granted patents and 1 EPO patent. Top assignees: Mitsui Petrochemical Industries, Ltd., Mitsui Chemicals, Inc., Mitsui Petrochemical Industries Co., Ltd.. Active years: 1997-2001.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masayasu Yoshida. Retrieved from https://idiyas.com/inventor/masayasu-yoshida-n3e9j5gh

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

USPTO Granted Patents = 8

% Patents Active = 100.0


Average Co-Inventor Count = 6.2

ph-index = 6

Forward Citations = 139(Granted Patents)


Location History:

  • Waki, JP (1998)
  • Kuga-gun, JP (1997 - 1999)
  • Waki-cho, JP (1997 - 1999)
  • Yamaguchi, JP (2001)

Company Filing History:

goldMedal5 out of 1,008 
 
Mitsui Petrochemical Industries, Ltd.
 patents
silverMedal2 out of 1,817 
 
Mitsui Chemicals, Inc.
 patents
bronzeMedal1 out of 3 
 
Mitsui Petrochemical Industries Co., Ltd.
 patents

Years Active: 1997-2001

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8 patents (USPTO):Explore Patents
1. 6297333 - Olefin polymerization catalyst, process for preparing olefin polymer, and olefin polymer (2001-10-02),
2. 6004897 - Olefin polymerization catalyst, process for preparing olefin polymer, (1999-12-21),
3. 5859272 - Transition metal compound, olefin polymerization catalyst component (1999-01-12),
4. 5723640 - Transition metal compound having indenyl-containing metallocene (1998-03-03),
5. 5710223 - Process for polymerizing propylene by using a novel metallocene catalyst (1998-01-20),
6. 5658997 - Process for polymerizing propylene by using a novel metallocene catalyst (1997-08-19),
7. 5629254 - Substituted indenyl ring containing metallocene catalyst for propylene (1997-05-13),
8. 5616663 - Transition metal compound, olefin polymerization catalyst component (1997-04-01),

Title: The Innovative Contributions of Masayasu Yoshida

Introduction

Masayasu Yoshida is a prominent inventor based in Kuga-gun, Japan. He has made significant contributions to the field of polymer chemistry, particularly in the development of olefin polymerization catalysts. With a total of eight patents to his name, Yoshida's work has had a lasting impact on the industry.

Latest Patents

Yoshida's latest patents focus on olefin polymerization catalysts and processes for preparing olefin polymers. The olefin polymerization catalyst he developed is formed from a Group IVB transition metal compound and an organoaluminum oxy-compound. This innovative catalyst allows for the production of olefin (co)polymers with high molecular weight and polymerization activities. Additionally, it enables the creation of olefin copolymers with a high comonomer content, even when using a small amount of comonomer.

Career Highlights

Throughout his career, Masayasu Yoshida has worked with notable companies such as Mitsui Petrochemical Industries, Ltd. and Mitsui Chemicals, Inc. His expertise in polymer chemistry has been instrumental in advancing the capabilities of these organizations in the field of olefin polymerization.

Collaborations

Yoshida has collaborated with esteemed colleagues, including Junichi Imuta and Daisuke Fukuoka. These partnerships have fostered innovation and have contributed

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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