For the Inventor, By the Inventor

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San Jose, CA, United States of America

Hitachi Micro Systems, Inc.

Calculating rank

USPTO Granted Patents = 26

% Expired Patents = 3.8

Forward Citations = 807

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30 inventors (with patents filed for the assignee):

Richard Stephen Roy (6 out of 61 patents)

Ashraf K Takla (5 out of 8 patents)

Richard W Blasco (4 out of 5 patents)

4. Prasenjit Biswas (3 out of 11 patents)

5. Kunio Uchiyama (3 out of 73 patents)

6. Norio Nakagawa (3 out of 25 patents)

7. Chandravadan N Patel (3 out of 3 patents)

8. Gautam Dewan (2 out of 4 patents)

9. Shine Chien Chung (2 out of 111 patents)

10. Kevin Ray Iadonato (2 out of 38 patents)

11. Hiromitsu Inada (2 out of 2 patents)

12. Atsushi Kiuchi (2 out of 2 patents)

13. Tony J Chiang (1 out of 4 patents)

14. Osamu Nishii (1 out of 46 patents)

15. Tsu-Wei Ku (1 out of 4 patents)

Core Competencies:

Floating Point Unit

Clock Recovery

Memory Architecture

Microprocessor

Phase-Locked Loop

Bit Pattern Detection

Data Input/Output

Clock Skew

Hybrid Loop Filters

Instruction Cache

Digital Arithmetic

Peak Detector

26 patents: Sort by Forward Citations

1. 6772327 - Floating point unit pipeline synchronized with processor pipeline (2004-08-03),

2. 6295327 - Method and apparatus for fast clock recovery phase-locked loop with training capability (2001-09-25),

3. 6226732 - Memory system architecture (2001-05-01),

4. 6225984 - Remote computer interface (2001-05-01),

5. 6125421 - Independent multichannel memory architecture (2000-09-26),

6. 6065092 - Independent and cooperative multichannel memory architecture for use (2000-05-16),

7. 6044123 - Method and apparatus for fast clock recovery phase-locked loop with (2000-03-28),

8. 6012139 - Microprocessor including floating point unit with 16-bit fixed length (2000-01-04),

9. 5978425 - Hybrid phase-locked loop employing analog and digital loop filters (1999-11-02),

10. 5867413 - Fast method of floating-point multiplication and accumulation (1999-02-02),

11. 5860000 - Floating point unit pipeline synchronized with processor pipeline (1999-01-12),

12. 5808487 - Multi-directional small signal transceiver/repeater (1998-09-15),

13. 5805873 - Phase linking of output clock with master clock in memory architecture (1998-09-08),

14. 5777917 - Simplification of lookup table (1998-07-07),

15. 5724275 - Fast multi-operand bit pattern detection method and circuit (1998-03-03),

Company Overview

Hitachi Micro Systems, Inc., based in San Jose, California, specializes in advanced microelectronics and semiconductor solutions. The company focuses on developing innovative technologies that enhance data processing and storage capabilities across various industries. With a commitment to research and development, Hitachi Micro Systems plays a significant role in the evolution of cloud computing, IoT, and high-performance computing, contributing to the digital transformation of businesses globally.

Profile summary synthesized from public USPTO records and patent filings.

Company Badge

USPTO Data Jan 1 1976 - Oct 27 2026

26 Patents

#290 in San Jose, CA

#3,044 in California

#12,875 in US

#24,848 in the World

San Jose, CA, United States of America

Hitachi Micro Systems, Inc.

Forward Citations = 807

30 inventors:

Richard Stephen Roy (6 out of 61 patents)

Ashraf K Takla (5 out of 8 patents)

Richard W Blasco (4 out of 5 patents)

4. Prasenjit Biswas (3 out of 11 patents)

5. Kunio Uchiyama (3 out of 73 patents)

IDiyas Innovation Intelligence. (2026). Company Patent Portfolio: Hitachi Micro Systems, Inc.. Retrieved from https://idiyas.com/company/hitachi-micro-systems

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

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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