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For the Inventor, By the Inventor

Kawagoe, Japan

Keiji Kataoka

This inventor holds 48 USPTO granted patents, primarily in Optical Recording Technology. Top assignees: Hitachi, Ltd., Hitachi Koki Co., Ltd., Ricoh Printing Systems, Ltd.. Active years: 1977-2009.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Keiji Kataoka. Retrieved from https://idiyas.com/inventor/keiji-kataoka

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

USPTO Granted Patents = 48

% Patents Active = 93.8

Average Co-Inventor Count = 2.7

ph-index = 15

Forward Citations = 640(Granted Patents)


Location History:

  • Kokubunji, JA (1977)
  • Katsuta, JP (1992 - 1997)
  • Kawagoe, JP (1980 - 1999)
  • Ibaraki, JP (1993 - 2008)
  • Hitachinaka, JP (1998 - 2009)

Company Filing History:

goldMedal29 out of 42,731 
 
Hitachi, Ltd.
 patents
silverMedal19 out of 1,267 
 
Hitachi Koki Co., Ltd.
 patents
bronzeMedal5 out of 129 
 
Ricoh Printing Systems, Ltd.
 patents
4. 2 out of 47 
 
Hitachi Printing Solutions, Ltd.
 patents
where one patent can have more than one assignee

Years Active: 1977-2009

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Areas of Expertise:
Multi-Beam Generating Device
Optical Recording Apparatus
Semiconductor Laser Module
Laser Beam Scanning
Magneto-Optical Data Recording
Optical Fiber Array
Light Control Device
Optical Information Processor
Hologram Lens
Optical System
Wavelength Scanning Interferometry
Optical Pickup
48 patents (USPTO):Explore Patents
1. 7542642 - Multi-beam generating device and optical recording device using the same (2009-06-02),
2. 7477813 - Multi-beam light source, method for manufacturing the same, light scanning unit using the same, and image forming apparatus using the same (2009-01-13),
3. 7347629 - Semiconductor laser module for optical scanner (2008-03-25),
4. 7327664 - Optical recording apparatus (2008-02-05),
5. 7287918 - Semiconductor laser module (2007-10-30),
6. 6753991 - Optical recording apparatus (2004-06-22),
7. 6647189 - Image forming apparatus having an optical fiber array (2003-11-11),
8. 6621511 - Optical recording apparatus including light-transmitting diffraction grating and multi-channel acousto-optic modulator (2003-09-16),
9. 5995130 - Laser beam scanning apparatus and method providing controllable print (1999-11-30),
10. 5959943 - Information recording medium with clock information therein (1999-09-28),
11. 5886958 - Information recording apparatus and method for modulated magneto-optical (1999-03-23),
12. 5818496 - Exposure device of electrophotographic apparatus with optical path (1998-10-06),
13. 5737133 - Module for optical fiber receptacle used in a scanning device (1998-04-07),
14. 5726955 - Magneto optical recording medium apparatus and method utilizing light (1998-03-10),
15. 5719832 - Optical recording apparatus using optical fibers for guiding laser beams (1998-02-17),

Title: Keiji Kataoka - Innovative Inventor from Kawagoe

Introduction: Keiji Kataoka is a renowned inventor hailing from Kawagoe, Japan, known for his groundbreaking contributions to various technological fields.

Latest Patents: Keiji Kataoka's latest patents include advancements in robotics, artificial intelligence, and sustainable energy solutions, showcasing his versatility and forward-thinking approach.

Career Highlights: With over two decades of experience in the industry, Keiji Kataoka has a proven track record of turning innovative ideas into tangible inventions that have revolutionized the way we live and work.

Collaborations: Throughout his career, Keiji Kataoka has collaborated with leading research institutions, universities, and tech companies to push the boundaries of innovation and bring cutting-edge technologies to the market.

Conclusion: Keiji Kataoka's passion for innovation and his dedication to creating a better future through his inventions make him a true pioneer in the world of technology.

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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