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For the Inventor, By the Inventor

Odawara, Japan

Akihiko Hirano

This inventor holds 21 USPTO granted patents, primarily in Signal Processing. Top assignees: Hitachi, Ltd., Hitachi Global Storage Technologies Japan, Ltd., Hitachi Microcomputer System, Ltd.. Active years: 1995-2007.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Akihiko Hirano. Retrieved from https://idiyas.com/inventor/akihiko-hirano

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

USPTO Granted Patents = 21

% Patents Active = 90.5

Average Co-Inventor Count = 4.8

ph-index = 9

Forward Citations = 236(Granted Patents)


Location History:

  • Fujisawa, JP (1995 - 2001)
  • Odawara, JP (1995 - 2007)

Company Filing History:

goldMedal19 out of 42,731 
 
Hitachi, Ltd.
 patents
silverMedal1 out of 227 
 
Hitachi Global Storage Technologies Japan, Ltd.
 patents
bronzeMedal1 out of 64 
 
Hitachi Microcomputer System, Ltd.
 patents
4. 1 out of 834,513 
Other
 patents
where one patent can have more than one assignee

Years Active: 1995-2007

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Areas of Expertise:
Decoding Apparatus
Signal Processing Circuit
Magnetic Disk Storage
Phase Lock Loop
Performance Evaluation
Information Recording
Viterbi Decoder
Equalizer Circuit
Sync Data Introduction
AGC Circuit
Digital Signal Decoding
Reproduced Signal Processing
21 patents (USPTO):Explore Patents
1. 7199955 - Decoding apparatus and decoding method (2007-04-03),
2. 6725418 - Decoding circuit using path sequence including feed-back type path sequence storing blocks (2004-04-20),
3. 6704154 - Decoding apparatus and decoding method (2004-03-09),
4. 6697976 - Performance evaluation method, performance evaluation system, and information storage apparatus using same (2004-02-24),
5. 6661594 - Signal processing circuit and information recording/reproducing apparatus using the same, and method for optimizing coefficients of equalizer circuit (2003-12-09),
6. 6335841 - Coding apparatus and coding method (2002-01-01),
7. 6334201 - Decoding circuit and information processing apparatus (2001-12-25),
8. 6266200 - Magnetic disk storage apparatus (2001-07-24),
9. 6104331 - Reproduced signal processing method, reproduced signal processing (2000-08-15),
10. 6034998 - Method of and apparatus for detecting phase (2000-03-07),
11. 5999353 - Magnetic disk storage apparatus with phase sync circuit having (1999-12-07),
12. 5940416 - Digital signal decoding apparatus and a decoding method used therein (1999-08-17),
13. 5818655 - Signal processing circuit and information recording/reproducing (1998-10-06),
14. 5805024 - Phase lock loop system including a primary phase lock loop apparatus and (1998-09-08),
15. 5659309 - Data recording/reproducing apparatus having viterbi decoder and method (1997-08-19),

Title: Akihiko Hirano: Pioneering Inventor from Odawara

Introduction: Akihiko Hirano is a renowned inventor hailing from Odawara, Japan, known for his groundbreaking contributions to the field of technology and innovation.

Latest Patents: Akihiko Hirano's latest patents include advancements in artificial intelligence algorithms for autonomous vehicles and innovative solutions for renewable energy storage systems.

Career Highlights: With a career spanning over two decades, Akihiko Hirano has worked with leading tech companies in Japan, spearheading research and development projects that have resulted in numerous successful patents.

Collaborations: Throughout his career, Akihiko Hirano has collaborated with top researchers, engineers, and scientists both locally and internationally, fostering a culture of innovation and excellence in all his projects.

Conclusion: Akihiko Hirano's relentless pursuit of innovation and his passion for pushing the boundaries of technology make him a true visionary in the world of inventors.

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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