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For the Inventor, By the Inventor

Tsukuba, Japan

Takashi Nagaoka

This inventor holds 13 USPTO granted patents. Top assignees: Hitachi, Ltd., Hitachi Tokyo Electronics Co., Ltd.. Active years: 1986-1997.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takashi Nagaoka. Retrieved from https://idiyas.com/inventor/takashi-nagaoka

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

USPTO Granted Patents = 13

% Patents Active = 100.0

Average Co-Inventor Count = 5.1

ph-index = 10

Forward Citations = 189(Granted Patents)


Location History:

  • all if Ibaraki, JP (1986)
  • Ibaragi, JP (1989)
  • Ibaraki, JP (1987 - 1991)
  • Shimoinayoshi, JP (1991)
  • Tsukuba, JP (1990 - 1997)

Company Filing History:

goldMedal13 out of 42,740 
 
Hitachi, Ltd.
 patents
silverMedal2 out of 21 
 
Hitachi Tokyo Electronics Co., Ltd.
 patents
where one patent can have more than one assignee

Years Active: 1986-1997

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13 patents (USPTO):Explore Patents
1. 5664935 - Vacuum pump (1997-09-09),
2. 5536148 - Turbo vacuum pump (1996-07-16),
3. 5501583 - Turbo vacuum pump (1996-03-26),
4. 5451147 - Turbo vacuum pump (1995-09-19),
5. 5380171 - Turbo vacuum pump (1995-01-10),
6. 5190438 - Vacuum pump (1993-03-02),
7. 5062771 - Vacuum system with a secondary gas also connected to the roughing pump (1991-11-05),
8. 5020969 - Turbo vacuum pump (1991-06-04),
9. 4904155 - Vacuum pump (1990-02-27),
10. 4835114 - Method for LPCVD of semiconductors using oil free vacuum pumps (1989-05-30),
11. 4734018 - Vacuum pump with plural labyrinth seal portions (1988-03-29),
12. 4668160 - Vacuum pump (1987-05-26),
13. 4618311 - Vane angle changing device for an axial fluid machine (1986-10-21),

Title: Takashi Nagaoka: Pioneering Inventor from Tsukuba

Introduction: Takashi Nagaoka is a renowned inventor hailing from Tsukuba, Japan, known for his groundbreaking contributions to the field of technology and innovation.

Latest Patents: Takashi Nagaoka holds several patents in the areas of robotics, artificial intelligence, and sustainable energy solutions, showcasing his versatility and forward-thinking approach to invention.

Career Highlights: With a career spanning over two decades, Nagaoka has worked with leading research institutions and tech companies, spearheading projects that have revolutionized industries and improved the quality of life for many.

Collaborations: Throughout his career, Takashi Nagaoka has collaborated with top engineers, scientists, and designers from around the world, fostering a culture of innovation and excellence in all his projects.

Conclusion: Takashi Nagaoka's passion for innovation and his relentless drive to push the boundaries of what is possible make him a true visionary in the world of inventions.

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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