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For the Inventor, By the Inventor

Amagasaki, Japan

Takaharu Ishizaki

This inventor holds 7 USPTO granted patents. Top assignees: Nippon Oil Fats Co., Ltd., Sumitomo Metal Industries, Inc.. Active years: 1980-1993.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takaharu Ishizaki. Retrieved from https://idiyas.com/inventor/takaharu-ishizaki

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

Calculating rank
USPTO Granted Patents = 7

% Patents Active = 100.0

Average Co-Inventor Count = 3.8

ph-index = 4

Forward Citations = 95(Granted Patents)


Location History:

  • Nishinomiya, JP (1985)
  • Nishinomiya City, JP (1989)
  • Amagasaki, JP (1980 - 1992)
  • Hyogo, JP (1993)

Company Filing History:

goldMedal7 out of 297 
 
Nippon Oil Fats Co., Ltd.
 patents
silverMedal1 out of 929 
 
Sumitomo Metal Industries, Inc.
 patents
where one patent can have more than one assignee

Years Active: 1980-1993

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7 patents (USPTO):Explore Patents
1. 5213584 - Formal compounds, fuel oil additives, and fuel oil compositions (1993-05-25),
2. 5108629 - Organic lubricating coating composition for use in plastic deformation (1992-04-28),
3. 4885008 - Method for improving cold flow of hydrocarbon fuel oils (1989-12-05),
4. 4509954 - Method for improving cold flow of fuel oils (1985-04-09),
5. 4491455 - Method for improving cold flow of fuel oils (1985-01-01),
6. 4203729 - Method for producing coal dispersing oil compositions (1980-05-20),
7. 4187078 - Coal dispersing oil (1980-02-05),

Title: Takaharu Ishizaki: Inventor in Fuel Additives and Metal-Forming Lubricants.

Introduction

Takaharu Ishizaki is an inventor associated with Amagasaki, Japan. His patent work includes fuel-oil additives and compositions, as well as lubricating coatings for metal processing. He is credited with 7 patents.

Latest Patents

Ishizaki’s listed patent work includes inventions in fuel-oil formulations and metal-forming lubricants.

- **Formal compounds, fuel oil additives, and fuel oil compositions.** This invention describes formal compounds with specified molecular structures and substituent ranges. The compounds can be used as fuel-oil additives, and the patent also covers fuel-oil compositions containing them.

- **Organic lubricating coating composition for use in plastic deformation.** This composition is designed for the plastic deformation of metal sheets. It contains a maleic anhydride/styrene copolymer that is at least partially esterified with organic hydroxy compounds, or a salt of the esterified copolymer. The invention specifies a range for the copolymer’s component ratio and requires that at least 10% by weight of the hydroxy compounds be long-chain compounds containing 10 to 30 carbon atoms.

Career Highlights

Ishizaki’s work is associated with Nippon Oil Fats Co., Ltd. and Sumitomo Metal Industries, Inc. The listed inventions reflect applications in both fuel technology and industrial metal processing.

Collaborations

His listed coworkers include Taizo Igarashi and Shingo Yamazaki.

Conclusion

Takaharu Ishizaki’s patent portfolio spans fuel-oil additives and lubricating coatings, connecting chemical formulation with practical industrial 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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