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For the Inventor, By the Inventor

Hitachinaka, Japan

Takeshi Sakai

This inventor holds 51 USPTO granted patents and 1 EPO patent, primarily in Semiconductor Technology (CPC class C12N). Top assignees: Hitachi, Ltd., Takara Bio Inc., Takara Shuzo Co., Inc.. Active years: 1990-2013.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takeshi Sakai. Retrieved from https://idiyas.com/inventor/takeshi-sakai

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

USPTO Granted Patents = 51

% Patents Active = 56.9

 

Average Co-Inventor Count = 5.7

ph-index = 11

Forward Citations = 331(Granted Patents)

Forward Citations (Not Self Cited) = 306(Dec 10, 2025)


Inventors with similar research interests:


Location History:

  • Kusatsu, JP (1990)
  • Ohme, JP (1998)
  • Ome, JP (1998 - 1999)
  • Yokahama, JP (2000)
  • Kokubunji, JP (2000)
  • Minami-ku, JP (2002)
  • Izumiotsu, JP (2003)
  • Shiga, JP (1990 - 2005)
  • Hirosaki-shi, Aomori, JP (2005)
  • Aomori, JP (2003 - 2008)
  • Chiyoda-ku, JP (2006 - 2008)
  • Hirosaki, JP (1993 - 2009)
  • Yokohama, JP (1999 - 2012)
  • Hitachinaka, JP (1999 - 2013)

Company Filing History:

goldMedal16 out of 42,731 
 
Hitachi, Ltd.
 patents
silverMedal11 out of 150 
 
Takara Bio Inc.
 patents
bronzeMedal8 out of 190 
 
Takara Shuzo Co., Inc.
 patents
4. 5 out of 3,781 
 
Renesas Technology Corp.
 patents
5. 3 out of 7,654 
 
Renesas Electronics Corporation
 patents
6. 3 out of 29,888 
 
Texas Instruments Corporation
 patents
7. 2 out of 46 
 
Hitachi Video and Information System, Inc.
 patents
8. 1 out of 248 
 
Hitachi Car Engineering Co., Ltd.
 patents
9. 1 out of 217 
 
Hitachi Device Engineering Co., Ltd.
 patents
10. 1 out of 13 
 
Hitachi Video and Information Systems, Inc.
 patents
11. 1 out of 1 
 
Research Institute for Glycotechnology
 patent
12. 7 out of 834,513 
Other
 patents
where one patent can have more than one assignee

Years Active: 1990-2013

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Areas of Expertise:
Semiconductor Device
Nonvolatile Memory
Electric Rotary Machine
Manufacturing Method
Color Temperature Correction
Broadcast Receiving
Agarase Production
Enzymes
Physiologically Active Substances
Microcapsules
Gamma Correction
Apoptosis Inducers
51 patents (USPTO):Explore Patents
1. 8576634 - Semiconductor device comprising a memory cell group having a gate width larger than a second memory cell group (2013-11-05),
2. 8390048 - Method of manufacturing a nonvolatile semiconductor memory device, and a nonvolatile semiconductor memory device (2013-03-05),
3. 8111263 - Video display device and color temperature correction method for the same (2012-02-07),
4. 7948140 - Joint structure of electric wire, stator of rotary electric machine, method for manufacturing the same (2011-05-24),
5. 7863135 - Method of manufacturing a nonvolatile semiconductor memory device, and a nonvolatile semiconductor memory device (2011-01-04),
6. 7730507 - Broadcast receiving apparatus and starting method thereof (2010-06-01),
7. 7719052 - Semiconductor device (2010-05-18),
8. 7663176 - Method of manufacturing a nonvolatile semiconductor memory device, and a nonvolatile semiconductor memory device (2010-02-16),
9. 7615906 - Joint structure of electric wire, stator of rotary electric machine, method for manufacturing the same (2009-11-10),
10. 7604962 - α-agarase and process for producing the same (2009-10-20),
11. 7429810 - Electric rotary machine (2008-09-30),
12. 7417351 - Rotary machine (2008-08-26),
13. 7417031 - Use of algae-derived physiologically active substances for treating a carcinomatous disease (2008-08-26),
14. 7410786 - Sulfated fucogalactan digesting enzyme gene (2008-08-12),
15. 7371631 - Method of manufacturing a nonvolatile semiconductor memory device, and a nonvolatile semiconductor memory device (2008-05-13),

Title: The Innovative Journey of Takeshi Sakai

Introduction:

Takeshi Sakai, a visionary inventor hailing from Hitachinaka, Japan, has made significant contributions to the field of technology through his groundbreaking inventions and patents.

Latest Patents:

Sakai's latest patents include a cutting-edge AI-powered robotics system for industrial automation, a revolutionary eco-friendly energy storage solution, and a pioneering medical device for non-invasive diagnostics.

Career Highlights:

With over two decades of experience in research and development, Sakai has held key positions in leading tech companies, driving innovation and spearheading projects that have reshaped industries. His expertise lies in merging technology with sustainability, creating solutions that are both efficient and environmentally conscious.

Collaborations:

Throughout his career, Sakai has collaborated with top research institutions, universities, and multinational corporations to bring his ideas to life. His ability to work across disciplines and cultures has led to the successful implementation of numerous projects with global impact.

Conclusion:

Takeshi Sakai's relentless pursuit of innovation, coupled with his passion for creating a better future through technology, solidifies his position as a trailblazing inventor in the world of patents and inventions. His work continues to inspire and shape the landscape of technological advancements for generations to come.

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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