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For the Inventor, By the Inventor

Toyonaka, Japan

Ichiro Kasai

This inventor holds 30 USPTO granted patents, primarily in Optical Display Systems. Top assignees: Minolta Company, Ltd., Minolta Camera Kabushiki Kaisha, Konica Minolta Photo Imaging, Inc.. Active years: 1990-2011.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Ichiro Kasai. Retrieved from https://idiyas.com/inventor/ichiro-kasai

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

Calculating rank
USPTO Granted Patents = 30

% Patents Active = 90.0

Average Co-Inventor Count = 2.2

ph-index = 10

Forward Citations = 361(Granted Patents)


Location History:

  • Osaka, JP (1990 - 1992)
  • Sakai, JP (1993 - 1999)
  • Kawachinagano, JP (2000 - 2006)
  • Toyonaka, JP (2004 - 2011)

Company Filing History:

goldMedal23 out of 2,816 
 
Minolta Company, Ltd.
 patents
silverMedal4 out of 2,979 
 
Minolta Camera Kabushiki Kaisha
 patents
bronzeMedal2 out of 81 
 
Konica Minolta Photo Imaging, Inc.
 patents
4. 1 out of 713 
 
Konica-Minolta Holdings, Inc.
 patents

Years Active: 1990-2011

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Areas of Expertise:
Holographic Device
Head-Mounted Display
Optical System
Image Display
Projection Device
Zoom Optical System
Image Forming
Viewing Optical System
Color Projection
Compact Finder
30 patents (USPTO):Explore Patents
1. 7898502 - Image display apparatus and head-mounted display (2011-03-01),
2. 7835050 - Optical holographic device with a hologram optical element on an area smaller than an irradiation area, holographic image display device and head mounted display with a hologram optical element on an area smaller than an irradiation area (2010-11-16),
3. 7468843 - Optical system and display apparatus (2008-12-23),
4. 7460286 - Method for producing an optical device, optical device, image display apparatus, and head-mounted display (2008-12-02),
5. 7136228 - Optical system and display apparatus (2006-11-14),
6. 7019798 - Display device (2006-03-28),
7. 7019715 - Head-mounted image display apparatus (2006-03-28),
8. 6937209 - Image display system (2005-08-30),
9. 6919976 - Information display device (2005-07-19),
10. 6914726 - Optical apparatus and viewing optical system thereof which is capable of displaying information (2005-07-05),
11. 6885484 - Optical system and method for fabricating a holographic optical element (2005-04-26),
12. 6816132 - Image display apparatus (2004-11-09),
13. 6771403 - Image display apparatus (2004-08-03),
14. 6657602 - Image display apparatus (2003-12-02),
15. 6447122 - Projection image display device using a reflective type display element (2002-09-10),

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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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