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For the Inventor, By the Inventor

Aichi, Japan

Fumio Takeuchi

This inventor holds 8 USPTO granted patents. Top assignee: Nippon Oil Fats Co., Ltd.. Active years: 1976-1991.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Fumio Takeuchi. Retrieved from https://idiyas.com/inventor/fumio-takeuchi

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 = 2.7

ph-index = 5

Forward Citations = 71(Granted Patents)


Location History:

  • Aichi, JA (1976)
  • Chita, JP (1984)
  • Aichi, JP (1983 - 1985)
  • Iwamizawa, JP (1991)

Company Filing History:

goldMedal8 out of 297 
 
Nippon Oil Fats Co., Ltd.
 patents

Years Active: 1976-1991

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8 patents (USPTO):Explore Patents
1. 4990323 - Composition for reduction-reoxidation type semiconductive ceramic (1991-02-05),
2. 4987107 - Ceramic composition for reduction-reoxidation type semiconductive (1991-01-22),
3. 4547234 - Explosive composition (1985-10-15),
4. 4534809 - Water-in-oil emulsion explosive composition (1985-08-13),
5. 4482403 - Water-in-oil emulsion explosive composition (1984-11-13),
6. 4414044 - Water-in-oil emulsion explosive composition (1983-11-08),
7. 4394198 - Water-in-oil emulsion explosive composition (1983-07-19),
8. 3966516 - Slurry explosive composition containing a nitroparaffin and an amide (1976-06-29),

Title: Fumio Takeuchi: Innovator in Semiconductive Ceramics

Introduction

Fumio Takeuchi is a prominent inventor based in Aichi, Japan. He has made significant contributions to the field of semiconductive ceramics, holding a total of 8 patents. His work focuses on innovative compositions that enhance the performance of electronic components.

Latest Patents

One of his latest patents is a composition for a reduction-reoxidation type semiconductive ceramic capacitor. This composition consists substantially of 100 mol % of a barium composite oxide, which includes BaTiO.sub.3 and BaZrO.sub.3, with a BaZrO.sub.3 content ranging from 0 to 20 mol %. It also incorporates 0.3 to 3.0 mol % of Bi.sub.2 O.sub.3 and 0.1 to 8.5 mol % of at least one member selected from TiO.sub.2 and ZrO.sub.2. This innovative composition demonstrates a breakdown voltage of not less than 400 V, an insulation resistance of not less than 10.sup.9 .OMEGA., and an electrostatic capacity of not less than 0.65 .mu.F/cm.sup.2 per unit surface area, with a magnitude, tan .delta., of less than 2.5%. Another notable patent is a ceramic composition for a reduction-reoxidation type semiconductive capacitor, which includes barium titanate or a combination of barium titanate and strontium titanate, titanium oxide, and various other oxides. This composition exhibits a breakdown voltage of not less than 900 V and an insulation resistance of not less than 10.sup.10 .OMEGA., showcasing its potential for high-performance applications.

Career Highlights

Fumio Takeuchi is currently associated with Nippon Oil Fats Co., Ltd., where he continues to innovate in the field of semiconductive materials. His extensive research and development efforts have positioned him as a key figure in advancing technology in this area.

Collaborations

He has collaborated with notable coworkers, including Masao Takahashi and Hiroshi Sakai, contributing to various projects that enhance the capabilities of semiconductive ceramics.

Conclusion

Fumio Takeuchi's work in semiconductive ceramics has led to significant

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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