This inventor holds 100 USPTO granted patents and 3 published patent applications and 2 EPO patents, primarily in Information Processing (CPC class 369 54). Top assignees: Sony Corporation, Sony Disc & Digital Solutions Inc., Other. Active years: 1993-2018.
USPTO Granted Patents = 100 (Patent Applications = 3)
% Patents Active = 30.0
EPO Patents = 2 (Patent Applications = 5)
Average Co-Inventor Count = 3.4
ph-index = 16
Forward Citations = 989(Granted Patents)
Forward Citations (Not Self Cited) = 969(Dec 10, 2025)
Inventors with similar research interests:
Location History:
- Kangawa, JP (2008)
- Kanagawa, JP (1996 - 2014)
- Tokyo, JP (1993 - 2018)
Company Filing History:

Sony Corporation
Sony Disc & Digital Solutions Inc.
Other
where one patent can have more than one assignee
Years Active: 1993-2018
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Areas of Expertise:
Data Transmission
Content Distribution
Information Processing
Recording Apparatus
Reproducing Method
Optical Disc
Data Recording
Authentication
Communication Device
Consumer Commodities
Access Control
Electronic Money
100 patents (USPTO):Explore Patents
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Profile summary based on public USPTO records.
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3 patents pending:
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2 patents (EPO):
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5 patents pending (EPO):
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