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For the Inventor, By the Inventor

Kofu, Japan

Kiyokazu Nakagawa

This inventor holds 16 USPTO granted patents, primarily in Semiconductor Technology. Top assignees: Hitachi, Ltd., Fuji Electric Co., Ltd., Agency of Industrial Science and Technology. Active years: 1991-2019.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Kiyokazu Nakagawa. Retrieved from https://idiyas.com/inventor/kiyokazu-nakagawa

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

Calculating rank
USPTO Granted Patents = 16

% Patents Active = 81.3

Average Co-Inventor Count = 4.2

ph-index = 6

Forward Citations = 260(Granted Patents)


Location History:

  • Saitama, JP (1991)
  • Sayama, JP (1993 - 2012)
  • Kofu, JP (2004 - 2019)

Company Filing History:

goldMedal11 out of 42,743 
 
Hitachi, Ltd.
 patents
silverMedal2 out of 4,826 
 
Fuji Electric Co., Ltd.
 patents
bronzeMedal1 out of 1,430 
 
Agency of Industrial Science and Technology
 patents
4. 1 out of 7,659 
 
Renesas Electronics Corporation
 patents
5. 1 out of 3,781 
 
Renesas Technology Corp.
 patents

Years Active: 1991-2019

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Areas of Expertise:
Semiconductor Device
Thin-Film Structure
Optical Communication
Metal-Semiconductor Alloy
Hydrogen Plasma
Transistor
Hetero Structure
Silicon Germanium
Polycrystalline Layer
Integrated Circuit
Surface Atom Fabrication
16 patents (USPTO):Explore Patents
1. 10176981 - Semiconductor device and semiconductor device manufacturing method (2019-01-08),
2. 9972499 - Method for forming metal-semiconductor alloy using hydrogen plasma (2018-05-15),
3. 8304810 - Semiconductor device and semiconductor substrate having selectively etched portions filled with silicon germanium (2012-11-06),
4. 7579229 - Semiconductor device and semiconductor substrate (2009-08-25),
5. 7317207 - Semiconductor device, method of making the same and liquid crystal display device (2008-01-08),
6. 6903372 - Semiconductor device, method of making the same and liquid crystal display device (2005-06-07),
7. 6888162 - Electronic apparatus having polycrystalline semiconductor thin film structure (2005-05-03),
8. 6727514 - Thin-film semiconductor integrated circuit device and picture display device with using thereof and manufacturing method thereof (2004-04-27),
9. 6545294 - ELECTRONIC APPARATUS HAVING SEMICONDUCTOR DEVICE INCLUDING PLURALITY OF TRANSISTORS FORMED ON A POLYCRYSTALLINE LAYERED STRUCTURE IN WHICH THE NUMBER OF CRYSTAL GRAINS IN EACH POLYCRYSTALLINE LAYER IS GRADUALLY REDUCED FROM LOWER TO UPPER LAYER (2003-04-08),
10. 6529304 - Optical communication equipment and system (2003-03-04),
11. 5689494 - Surface atom fabrication method and apparatus (1997-11-18),
12. 5523592 - Semiconductor optical device, manufacturing method for the same, and (1996-06-04),
13. 5416331 - Surface atom fabrication method and apparatus (1995-05-16),
14. 5338942 - Semiconductor projections having layers with different lattice constants (1994-08-16),
15. 5241197 - Transistor provided with strained germanium layer (1993-08-31),

Title: Kiyokazu Nakagawa: Pioneering Inventor from Kofu

Introduction: Kiyokazu Nakagawa is a renowned inventor hailing from Kofu, Japan, known for his groundbreaking contributions to the field of technology and innovation.

Latest Patents: Nakagawa's latest patents include advancements in artificial intelligence algorithms for autonomous vehicles, wearable health monitoring devices, and sustainable energy solutions.

Career Highlights: With over two decades of experience in research and development, Nakagawa has led numerous successful projects that have resulted in patented inventions revolutionizing various industries.

Collaborations: Throughout his career, Nakagawa has collaborated with leading tech companies, research institutions, and universities worldwide, fostering a culture of innovation and knowledge sharing.

Conclusion: Kiyokazu Nakagawa's passion for innovation and his relentless pursuit of technological advancement continue to inspire the next generation of inventors and researchers globally.

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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