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For the Inventor, By the Inventor

Itami, Japan

Akira Yamakawa

This inventor holds 95 USPTO granted patents, primarily in Silicon Nitride Ceramics (CPC class 501 98). Top assignees: Sumitomo Electric Industries, Limited, Japan Atomic Energy Institute, Agency of Industrial Science and Technology. Active years: 1983-2002.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Akira Yamakawa. Retrieved from https://idiyas.com/inventor/akira-yamakawa

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

USPTO Granted Patents = 95

% Patents Active = 98.9

Average Co-Inventor Count = 3.2

ph-index = 16

Forward Citations = 966(Granted Patents)

Forward Citations (Not Self Cited) = 906(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Osaka, JP (1992)
  • Hyogo, JP (1988 - 2000)
  • Itami, JP (1983 - 2002)

Company Filing History:

goldMedal94 out of 10,647 
 
Sumitomo Electric Industries, Limited
 patents
silverMedal2 out of 322 
 
Japan Atomic Energy Institute
 patents
bronzeMedal1 out of 1,430 
 
Agency of Industrial Science and Technology
 patents
4. 1 out of 1 
 
I. Sumitomo Electric Industries, Ltd.
 patent
5. 2 out of 834,570 
Other
 patents
where one patent can have more than one assignee

Years Active: 1983-2002

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Areas of Expertise:
Silicon Nitride
Ceramic Production
Sintered Body
High Thermal Conductivity
Porous Bodies
Sliding Components
Manufacturing Method
Metallized Ceramics
Aluminum Nitride
Zirconia Vane
Composite Bearings
Grinding Techniques
95 patents (USPTO):Explore Patents
1. 6458298 - Process for molding ceramics (2002-10-01),
2. 6447923 - Metallized silicon nitride ceramic and fabricating process thereof as well as metallizing composite for the process (2002-09-10),
3. 6410468 - Si3N4 ceramic, Si-base composition for production thereof and processes for producing these (2002-06-25),
4. 6315843 - Method of manufacturing a sliding component (2001-11-13),
5. 6284690 - Si3N4 ceramic, Si-base composition for production thereof and processes for producing these (2001-09-04),
6. 6143677 - Silicon nitride sinter having high thermal conductivity and process for (2000-11-07),
7. 6001759 - Silicon nitride sintered body, method of preparing the same and nitrided (1999-12-14),
8. 5961907 - Process for producing silicon nitride sliding member (1999-10-05),
9. 5904993 - Joint body of aluminum and silicon nitride and method of preparing the (1999-05-18),
10. 5879078 - Device for producing ceramic sintered body (1999-03-09),
11. 5858523 - Porous ceramic film and process for producing the same (1999-01-12),
12. 5846460 - Method of preparing silicon nitride porous body (1998-12-08),
13. 5827472 - Process for the production of silicon nitride sintered body (1998-10-27),
14. 5809842 - Ceramic sliding component (1998-09-22),
15. 5783314 - Sliding component and production method thereof (1998-07-21),

Title: The Innovative Journey of Akira Yamakawa

Introduction: Akira Yamakawa, a visionary inventor hailing from Itami, Japan, has left an indelible mark on the world of technology with her groundbreaking innovations and problem-solving prowess.

Latest Patents: Akira Yamakawa's portfolio boasts an impressive 95 patents, showcasing her expertise and ingenuity in various technological domains. Among her latest patents are the "Process for molding ceramics" and "Metallized silicon nitride ceramic and fabricating process thereof," which highlight her focus on advanced materials and fabrication techniques.

Career Highlights: Throughout her career, Akira Yamakawa has made significant contributions to companies like Sumitomo Electric Industries, Limited, where she has spearheaded research and development projects that have pushed the boundaries of technological advancement.

Collaborations: Akira Yamakawa has collaborated with esteemed colleagues such as Masaya Miyake and Takao Nishioka, fostering a culture of innovation and collaboration that has led to groundbreaking discoveries and inventions.

Conclusion: Akira Yamakawa's unwavering dedication to innovation and her visionary approach to problem-solving have established her as a trailblazer in the realm of technology, inspiring future generations of inventors and innovators to strive for new horizons and revolutionize the world with their creations.

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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