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For the Inventor, By the Inventor

Kodaira, Japan

Hiroshi Kawamoto

This inventor holds 27 USPTO granted patents, primarily in Semiconductor Memory. Top assignees: Hitachi, Ltd., Hitachi Microcomputer Engineering, Ltd., Hitachi Vlsi Engineering Corp.. Active years: 1976-1998.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiroshi Kawamoto. Retrieved from https://idiyas.com/inventor/hiroshi-kawamoto-4sb2lpqo

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

Calculating rank
USPTO Granted Patents = 27

% Patents Active = 100.0

Average Co-Inventor Count = 2.5

ph-index = 10

Forward Citations = 545(Granted Patents)


Location History:

  • Kodaira, JA (1976)
  • Kodaira, JP (1984 - 1998)

Company Filing History:

goldMedal27 out of 42,743 
 
Hitachi, Ltd.
 patents
silverMedal2 out of 149 
 
Hitachi Microcomputer Engineering, Ltd.
 patents
bronzeMedal1 out of 182 
 
Hitachi Vlsi Engineering Corp.
 patents
where one patent can have more than one assignee

Years Active: 1976-1998

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Areas of Expertise:
Semiconductor Memory
Integrated Circuit
Voltage Limiter Circuit
Dynamic Storage Device
Self-Repair Circuit
Gate Array
Testing Storage Cells
Data Refreshing
Complementary MISFET
Floating Gate
Single Chip IC
Differential Amplifier
27 patents (USPTO):Explore Patents
1. 5808951 - Semiconductor memory (1998-09-15),
2. 5732037 - Semiconductor memory (1998-03-24),
3. 5689457 - Semiconductor Memory (1997-11-18),
4. 5448520 - Semiconductor memory (1995-09-05),
5. 5383080 - Semiconductor integrated circuit having voltage limiter circuit (1995-01-17),
6. 5365478 - Semiconductor memory (1994-11-15),
7. 5323033 - Single chip IC device having gate array or memory with gate array and (1994-06-21),
8. 5278839 - Semiconductor integrated circuit having self-check and self-repair (1994-01-11),
9. 5187685 - Complementary MISFET voltage generating circuit for a semiconductor (1993-02-16),
10. 5157629 - Selective application of voltages for testing storage cells in (1992-10-20),
11. 5119332 - Semiconductor memory (1992-06-02),
12. 4893157 - Semiconductor device (1990-01-09),
13. 4860255 - Semiconductor memory (1989-08-22),
14. 4839865 - Selective application of voltages for testing storage cells in (1989-06-13),
15. 4839860 - Semiconductor device having head only memory with differential amplifier (1989-06-13),

Title: **Hiroshi Kawamoto: Innovator in Semiconductor Memory Technology**

Introduction:

Hiroshi Kawamoto is a distinguished inventor based in Kodaira, Japan, known for his significant contributions to semiconductor memory technology. With a total of 27 patents to his name, he has played a pivotal role in advancing the efficiency and functionality of dynamic RAM integrated circuits.

Latest Patents:

One of Hiroshi Kawamoto's latest inventions is a dynamic RAM integrated circuit designed with a one-element memory cell type. This innovative circuit is equipped with a plurality of data lines and a sense amplifier, along with multiple word lines that intersect with the data lines. Memory cells are strategically placed at the intersections of these lines. The unique design features a P-type semiconductor substrate and an N-type well region formed within the substrate. The memory cells are placed in this well, while the sense amplifier connects to the data lines, utilizing a pair of N-channel MOSFETs created in the substrate and a pair of P-channel MOSFETs situated in the well region.

Career Highlights:

Throughout his career, Hiroshi has worked with prominent companies in the technology sector, including Hitachi, Ltd. and Hitachi Microcomputer Engineering, Ltd. His tenure in these organizations has allowed him to harness his skills and knowledge in semiconductor technology, making notable advancements in the industry.

Collaborations:

Hiroshi Kawamoto has collaborated with various talented individuals during his career. Among his notable coworkers are Katsuhiro Shimohigashi and Hiroo Masuda, who have also contributed to the field of semiconductor technology.

Conclusion:

Hiroshi Kawamoto's expertise and innovation in semiconductor memory have made a lasting impact on technology. His continuous efforts and contributions through his patents are a testament to his dedication to the field, inspiring future generations of inventors and engineers.

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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