Kanagawa, Japan

Takeshi Yamakawa

This inventor holds 35 USPTO granted patents and 1 published patent application and 7 EPO patents, primarily in Optical Scanning Technology. Top assignee: Ricoh Company, Ltd.. Active years: 1991-2024.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Takeshi Yamakawa. Retrieved from https://idiyas.com/inventor/takeshi-yamakawa

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

USPTO Granted Patents = 35 

% Patents Active = 57.1

 

Average Co-Inventor Count = 2.5

ph-index = 8

Forward Citations = 284(Granted Patents)


Location History:

  • Huzisawa, JP (2000)
  • Chigasaki, JP (2008)
  • Tokyo, JP (1998 - 2013)
  • Fujisawa, JP (1991 - 2014)
  • Kanagawa, JP (2004 - 2024)

Company Filing History:


Years Active: 1991-2024

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Areas of Expertise:
Optical Scanner
Image Forming Apparatus
Optical Writing Device
Housing Structure
Curve Correction Mechanism
Lens Mounting Device
Data Transfer Device
Document Circulating Apparatus
Noise Reduction
Multi-Beam Light Source
Removable Processing Unit
Image Processing
35 patents (USPTO):Explore Patents

Title: Pioneering Innovations by Takeshi Yamakawa in Optical Technology

Introduction: Takeshi Yamakawa, an inventive mind from Kanagawa, Japan, has made significant contributions to the field of optical technology. With an impressive portfolio of 35 patents, he is known for his groundbreaking work at Ricoh Company, Ltd., where his innovations have shaped the development of imaging and scanning devices.

Latest Patents: Among his latest patents are designs for a casing structure, an optical scanner, and an image forming apparatus. The casing structure features a unique design that includes a cover with an opening mechanism and a seal designed to ensure functionality. The optical scanner integrates this innovative casing and accommodates multiple components essential for the image forming apparatus. Additionally, the image forming apparatus leverages the optical scanner's capabilities to enhance image quality and processing efficiency.

Career Highlights: Throughout his career, Takeshi Yamakawa has been instrumental in advancing technology in imaging and optical devices. His innovative designs not only improve usability but also enhance the durability and performance of the devices. Working with a talented team at Ricoh, he has consistently pushed the boundaries of what is possible in optical technology.

Collaborations: Takeshi has closely collaborated with notable colleagues such as Kazunori Watanabe and Hiroshi Yoshizawa. Their partnership has led to multiple advancements in design and function, showcasing a strong synergy among the inventors at Ricoh Company, Ltd.

Conclusion: As a key figure in the realm of optical technology, Takeshi Yamakawa's contributions through his numerous patents reflect a commitment to innovation and excellence. His work continues to influence the industry, paving the way for future advancements in imaging technology and enhancing user experiences across various applications.

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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