Masato Hirai

This inventor holds 8 USPTO granted patents. Top assignees: Hitachi, Ltd., Hitachi Computer Engineering Co., Ltd., Hitachi Computer Electronic Co., Ltd.. Active years: 1987-2000.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masato Hirai. Retrieved from https://idiyas.com/inventor/masato-hirai-k2oiiayf

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

Calculating rank

USPTO Granted Patents = 8

% Patents Active = 100.0

Average Co-Inventor Count = 2.5

ph-index = 7

Forward Citations = 149(Granted Patents)

Company Filing History:

Hitachi Computer Engineering Co., Ltd.

patents

1 out of 1

Hitachi Computer Electronic Co., Ltd.

patent

where one patent can have more than one assignee

Years Active: 1987-2000

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8 patents (USPTO):Sort by Forward CitationsExplore Patents

1. 6014406 - Frequency-hopped wireless communication system and mobile wireless (2000-01-11),

2. 5455840 - Method of compensating a phase of a system clock in an information (1995-10-03),

3. 5373254 - Method and apparatus for controlling phase of a system clock signal for (1994-12-13),

4. 5052022 - Repeater and PLL circuit (1991-09-24),

5. 5046185 - Regenerative repeater (1991-09-03),

6. 4937823 - Ring network configuration (1990-06-26),

7. 4899337 - Time division multiplexer with automatic call function (1990-02-06),

8. 4697047 - Trunk coupling unit (1987-09-29),

I specialize in innovations, inventions, inventors, patent attorneys, assignees, and patents.

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]