Takahagi, Japan

Takao Kumasaka

This inventor holds 21 USPTO granted patents, primarily in Electrophotographic Technology. Top assignees: Hitachi, Ltd., Hitachi Koki Co., Ltd., Ricoh Printing Systems, Ltd.. Active years: 1988-2006.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takao Kumasaka. Retrieved from https://idiyas.com/inventor/takao-kumasaka

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


% Patents Active = 100.0

Average Co-Inventor Count = 3.7

ph-index = 8

Forward Citations = 234(Granted Patents)


Location History:

  • Hitachi, JP (1994)
  • Takahagi, JP (1988 - 2006)

Company Filing History:


Years Active: 1988-2006

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Areas of Expertise:
Image Recording Device
Multi-Color Image Forming
Developing Apparatus
Electrophotographic Machine
Magnetic Brush
Corona Deterioration
Radiant Heat Fixing
Duplex Reproducing
Fusing Apparatus
Recording Method
Image Transfer Member
Electrical Power Supply
21 patents (USPTO):Explore Patents

Title: The Innovative Mind of Takao Kumasaka

Introduction: Takao Kumasaka, a prominent inventor hailing from Takahagi, Japan, has made significant contributions to the field of imaging technology. With 21 patents to his name, Kumasaka's innovations have focused on enhancing image recording devices and systems, promising to redefine visual technology.

Latest Patents: Kumasaka's latest patents showcase his ingenuity in tackling challenges within image recording. His multi-beam image recording device addresses the need for high-quality, high-resolution images without positional errors. This device utilizes test patterns to measure and correct positional errors through advanced calculations and controls. Furthermore, his multi-color image forming apparatus introduces mechanisms to reduce ozone generation during image formation. This system employs a tri-level electric potential to manage color toners efficiently while ensuring minimal environmental impact.

Career Highlights: Throughout his career, Takao Kumasaka has worked with prestigious companies, including Hitachi, Ltd. and Hitachi Koki Co., Ltd. His experience at these organizations has equipped him with a profound understanding of both the technical and practical aspects of innovation, which is reflected in the patents he has developed over the years.

Collaborations: Kumasaka has collaborated with notable individuals in the industry, including Yuzuru Simazaki and Teruaki Mitsuya. These partnerships have contributed to a rich exchange of ideas and expertise, further enhancing the quality and impact of his inventions.

Conclusion: Takao Kumasaka's work continues to influence the field of imaging technology significantly. His dedication to innovation and improvement is evident in his extensive patent portfolio, showcasing his commitment to pushing the boundaries of what is possible in image recording systems. As technology evolves, Kumasaka's inventions will likely serve as crucial building blocks in the future of imaging solutions.

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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