This inventor holds 23 USPTO granted patents, primarily in Camera Technology. Top assignees: Minolta Camera Kabushiki Kaisha, Minolta Company, Ltd., Konica Minolta Photo Imaging, Inc.. Active years: 1989-2009.
IDiyas Innovation Intelligence. (2026). Inventor Profile: Tsutomu Ichikawa. Retrieved from https://idiyas.com/inventor/tsutomu-ichikawa
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Calculating rank
% Patents Active = 87.0
Average Co-Inventor Count = 3.2
ph-index = 10
Forward Citations = 320(Granted Patents)
Location History:
- Kashiwara, JP (1989 - 1990)
- Hashimoto, JP (1993 - 1999)
- Osaka, JP (1989 - 2003)
- Sakai, JP (1997 - 2009)
Company Filing History:
11 out of 2,979 Minolta Camera Kabushiki Kaisha
10 out of 2,816 
Minolta Company, Ltd.
1 out of 81 
Konica Minolta Photo Imaging, Inc.
4. 1 out of 713
Konica-Minolta Holdings, Inc.
Years Active: 1989-2009
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Areas of Expertise:
Camera System
Flash Device
Image Capturing
Automatic Focusing
Wireless Flash
Electronic Flash
Remotely-Controlled
Close-Range Lighting
Photography
Control Method
High Speed
Juxtaposed Discharge Tubes
23 patents (USPTO):Explore Patents
Couldn't find inventor
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]
IDiyas Innovation Intelligence. (2026). Inventor Profile: Tsutomu Ichikawa. Retrieved from https://idiyas.com/inventor/tsutomu-ichikawa
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]
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]
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]
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]
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]