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For the Inventor, By the Inventor

Tokorozawa, Japan

Hiroshi Yamazaki

This inventor holds 8 USPTO granted patents. Top assignees: Chisso Corporation, The Institute of Physical and Chemical Research, Other. Active years: 1989-2005.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiroshi Yamazaki. Retrieved from https://idiyas.com/inventor/hiroshi-yamazaki-abdbqtrw

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 = 87.5

Average Co-Inventor Count = 4.9

ph-index = 6

Forward Citations = 232(Granted Patents)


Location History:

  • Tokorozawashi, JP (1989)
  • Saitama-ken, JP (2001)
  • Tokorozawa, Saitama-ken JP (2002)
  • Tokorozawa, JP (1990 - 2005)

Company Filing History:

goldMedal6 out of 1,109 
 
Chisso Corporation
 patents
silverMedal2 out of 94 
 
The Institute of Physical and Chemical Research
 patents
bronzeMedal2 out of 834,570 
Other
 patents
where one patent can have more than one assignee

Years Active: 1989-2005

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8 patents (USPTO):Explore Patents
1. 6846943 - Metallocene compound, olefin polymerization catalyst containing the compound, and method for producing an olefin polymer by use of the catalyst (2005-01-25),
2. 6479646 - Metallocene compounds having indenyl ligand and catalysts for olefin polymerization containing the same (2002-11-12),
3. 6426395 - &mgr;-oxo-bis-metallocene complex compounds and catalysts using same for the polymerization of olefins as well as polymerization process (2002-07-30),
4. 6326493 - Metallocene compounds, processes for the preparation thereof, catalyst components for olefin polymerization, and processes for the production of olefin polymers (2001-12-04),
5. 6184402 - Processes for the preparation of metallocene complexes (2001-02-06),
6. 6169051 - Metallocene compounds, processes for the preparation thereof, catalyst components for olefin polymerization, and processes for the production of olefin polymers (2001-01-02),
7. 4931417 - Transition-metal compound having a bis-substituted-cyclopentadienyl (1990-06-05),
8. 4874880 - Bis(di-, tri- or tetra-substituted-cyclopentadienyl)-zirconium dihalides (1989-10-17),

Title: Innovator Hiroshi Yamazaki: Pioneering Metallocene Chemistry

Introduction: Hiroshi Yamazaki is a distinguished inventor based in Tokorozawa, Japan, renowned for his contributions to the field of metallocene chemistry. With a total of 8 patents to his name, his work has significantly impacted the production of olefin polymers, showcasing his innovative spirit.

Latest Patents: Among his latest patents is a novel metallocene compound that serves as an olefin polymerization catalyst. This groundbreaking invention presents a metallocene compound designed to produce olefin polymers with high molecular weight and exceptional stereoregularity. The formula of this compound is represented as follows: Q(CHR)(CHR)MXY. Additionally, he has developed metallocene compounds featuring an indenyl ligand that enhance the efficacy of catalysts for olefin polymerization.

Career Highlights: Throughout his career, Hiroshi Yamazaki has made substantial strides in the chemical industry. He has worked with notable organizations, including Chisso Corporation and The Institute of Physical and Chemical Research, where he has contributed to various advancements in polymer chemistry.

Collaborations: Collaboration is essential in innovation, and Yamazaki has worked alongside esteemed colleagues such as Masato Nakano and Seiki Mitani. Their combined expertise has aided in the development of pivotal technologies in the realm of olefin polymerization.

Conclusion: Hiroshi Yamazaki's innovative work and dedication have firmly established him as a prominent figure in the field of chemistry. His patents not only reflect his remarkable talent but also contribute essential advancements that influence the production of modern materials. As he continues to push the boundaries of chemical innovation, the impact of his work will undoubtedly inspire future generations of inventors and researchers.

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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