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For the Inventor, By the Inventor

Kasugai, Japan

Takashi Ozawa

This inventor holds 18 USPTO granted patents and 1 published patent application, primarily in Semiconductor Memory. Top assignees: Fujitsu Corporation, Nec Corporation, Fujitsu Semiconductor Limited. Active years: 1983-2025.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takashi Ozawa. Retrieved from https://idiyas.com/inventor/takashi-ozawa-2157y954

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

Calculating rank
USPTO Granted Patents = 18 

% Patents Active = 77.8

Average Co-Inventor Count = 1.3

ph-index = 8

Forward Citations = 270(Granted Patents)


Location History:

  • Yokohama, JP (1990 - 1992)
  • Kawasaki, JP (1995 - 1997)
  • Kasugai, JP (1999 - 2015)
  • Tokyo, JP (1983 - 2022)

Company Filing History:

goldMedal9 out of 39,381 
 
Fujitsu Corporation
 patents
silverMedal4 out of 36,770 
 
Nec Corporation
 patents
bronzeMedal2 out of 1,674 
 
Fujitsu Semiconductor Limited
 patents
4. 2 out of 62 
 
Tpr Co., Ltd.
 patents
5. 1 out of 154 
 
Fujitsu Vlsi Limited
 patents
6. 1 out of 1,038 
 
Nippon Electric Co., Ltd.
 patents
7. 1 out of 17 
 
Tpr Industry Co., Ltd.
 patents
where one patent can have more than one assignee

Years Active: 1983-2025

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Areas of Expertise:
Compression Ring
Cylinder Liner
Semiconductor Memory Device
Multi-Chip Module
Heat Dissipation
Integrated Circuit
BGA Semiconductor Device
High-Speed Circuit
Signal Transmitting Circuit
Access Transistors
Decoder Circuit
Precharge Circuit
18 patents (USPTO):Explore Patents
1. 12196325 - Compression ring (2025-01-14),
2. 11499498 - Cylinder liner and manufacturing method for same (2022-11-15),
3. 9013914 - Semiconductor memory device and method for controlling semiconductor memory device (2015-04-21),
4. 7869261 - Semiconductor memory which enables reliable data writing with low supply voltage by improving the conductance via access transistors during write operation (2011-01-11),
5. 7149102 - Semiconductor memory device and control method for semiconductor memory device (2006-12-12),
6. 6384646 - Select signal generating circuit having clamp circuit for clamping select signals upon power on (2002-05-07),
7. 5870344 - Semiconductor memory device (1999-02-09),
8. 5615089 - BGA semiconductor device including a plurality of semiconductor chips (1997-03-25),
9. 5592735 - Method of making a multi-chip module having an improved heat dissipation (1997-01-14),
10. 5471366 - Multi-chip module having an improved heat dissipation efficiency (1995-11-28),
11. 5124950 - Multi-port semiconductor memory (1992-06-23),
12. 4972096 - Integrated circuit having bipolar-CMOS circuit (1990-11-20),
13. 4827328 - Hybrid IC device (1989-05-02),
14. 4626712 - High speed MOS input circuit with precision input-output characteristics (1986-12-02),
15. 4620298 - High-speed output circuit (1986-10-28),

Title: Takashi Ozawa: Innovator in Engine Technology

Introduction

Takashi Ozawa is a prominent inventor based in Kasugai, Japan. He has made significant contributions to the field of engine technology, holding a total of 18 patents. His innovative designs and methods have advanced the efficiency and performance of various engine components.

Latest Patents

Among his latest patents is a unique compression ring design. This compression ring features an outer peripheral surface with a barrel curved surface. The design satisfies specific conditions regarding the width and radial distances, enhancing its functionality. Another notable patent is for a cylinder liner made from flaky graphite cast iron. This cylinder liner includes a nitrided layer on its inner periphery and features a cross-hatching section that improves its performance. The roughness curve of the inner periphery is designed to meet stringent standards, ensuring optimal engine operation.

Career Highlights

Throughout his career, Takashi Ozawa has worked with leading companies in the technology sector. He has been associated with Fujitsu Corporation and NEC Corporation, where he has applied his expertise in engineering and innovation. His work has significantly impacted the development of engine components and related technologies.

Collaborations

Takashi has collaborated with notable professionals in his field, including Ichiro Munakata and Hiroaki Takagi. These collaborations have fostered a creative environment that has led to the development of groundbreaking technologies.

Conclusion

Takashi Ozawa's contributions to engine technology through his patents and collaborations highlight his role as a key innovator in the industry. His work continues to influence advancements in engine performance and efficiency.

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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