Azumino, Japan

Kazuo Otsuka

This inventor holds 33 USPTO granted patents and 1 published patent application and 1 EPO patent. Top assignees: Seiko Epson Corporation, Ryuka Law Firm. Active years: 2002-2026.

USPTO Granted Patents = 33 

% Patents Active = 84.8


Average Co-Inventor Count = 2.6

ph-index = 7

Forward Citations = 133(Granted Patents)


Location History:

  • Nagano-ken, JP (2004 - 2009)
  • Nagano, JP (2002 - 2019)
  • Azumino, JP (2015 - 2023)

Company Filing History:


Years Active: 2002-2026

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Areas of Expertise:
Recording Device
Medium Transport Device
Liquid Ejecting Apparatus
Printing Technology
Paper Feeder
Recording Apparatus
Frame Coupling Structure
Medium Feeding Apparatus
Double-Sided Printing
Ink Cartridge Detection
Movable Feed Roller
Liquid Holding Unit
33 patents (USPTO):Explore Patents

Title: The Innovative Contributions of Kazuo Otsuka

Introduction: Kazuo Otsuka, an accomplished inventor based in Azumino, Japan, has made significant contributions to technology over his prolific career. With a remarkable 32 patents to his name, Otsuka's work primarily revolves around advancements in recording devices, showcasing his expertise in engineering and innovation.

Latest Patents: Among his latest inventions are the Frame Coupling Structure and the Recording Apparatus. The Frame Coupling Structure involves a main frame extending in a first direction, with side frames that intersect at a second direction. This design includes a supported member that is anchored by one of the side frames. Notably, the side frame features distinct frame portions that ensure stability and efficiency. Meanwhile, the Recording Apparatus is engineered for medium handling, including a mounting section, a reverse-feeding path, and a recording unit designed to seamlessly operate in sync with the medium's transport direction. This apparatus emphasizes innovative methods of reversing and discharging the medium post-recording.

Career Highlights: Throughout his illustrious career, Kazuo Otsuka has worked with prominent organizations, including Seiko Epson Corporation and Ryuka Law Firm. His experiences in these reputable firms have allowed him to refine his skills and apply them to his inventive projects.

Collaborations: Otsuka has collaborated with fellow innovators such as Kazuhisa Takeda and Narihiro Oki. Their combined efforts in research and development have undoubtedly propelled advancements in the fields they specialize in.

Conclusion: Kazuo Otsuka's contributions to technology through his numerous patents underscore his status as a leading inventor. His innovative designs in recording technology continue to influence the industry, benefiting countless applications. His legacy is one of creativity, collaboration, and a relentless pursuit of innovation.

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