Yamanashi, Japan

Tetsuya Sakuma

This inventor holds 3 USPTO granted patents. Top assignees: Ricoh Company, Ltd., Yamanashi Electronics Co., Ltd., Shindengen Electric Manufacturing Company Limited. Active years: 1999-2013.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tetsuya Sakuma. Retrieved from https://idiyas.com/inventor/tetsuya-sakuma-850w85ex

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


% Patents Active = 66.7

Average Co-Inventor Count = 5.7

ph-index = 1

Forward Citations = 6(Granted Patents)


Location History:

  • Yamanashi-ken, JP (1999)
  • Kofu, JP (2010)
  • Yamanashi, JP (2013)

Company Filing History:


Years Active: 1999-2013

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3 patents (USPTO):Explore Patents

Title: Tetsuya Sakuma: Innovator in Electrophotographic Technology

Introduction

Tetsuya Sakuma is a prominent inventor based in Yamanashi, Japan. He has made significant contributions to the field of electrophotography, holding a total of three patents. His work focuses on enhancing the performance and efficiency of electrophotographic devices, which are essential in modern printing technology.

Latest Patents

Sakuma's latest patents include innovative advancements in electrophotographic photoconductors and related apparatuses. One notable patent describes an electrophotographic photoconductor that features a conductive substrate and a photoconductive layer. This layer contains a charge generation agent and a charge transport agent, which are represented by specific general formulas. Another significant patent involves an electrophotographic photoreceptor designed to respond to reductions in diameter and high circumferential speeds, addressing the demands for miniaturization and increased speed in copiers and printers. This photoreceptor boasts high sensitivity in the long-wavelength region and maintains stable electric characteristics even after repeated use.

Career Highlights

Throughout his career, Tetsuya Sakuma has worked with notable companies, including Yamanashi Electronics Co., Ltd. and Ricoh Company, Ltd. His experience in these organizations has allowed him to develop and refine his innovative ideas in electrophotographic technology.

Collaborations

Sakuma has collaborated with esteemed colleagues

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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