Yamatokoriyama, Japan

Tutomu Kato

This inventor holds 3 USPTO granted patents. Top assignee: Sharp Kabushiki Kaisha Corporation. Active years: 1981-1986.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Tutomu Kato. Retrieved from https://idiyas.com/inventor/tutomu-kato

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 = 2.9

ph-index = 3

Forward Citations = 42(Granted Patents)


Company Filing History:


Years Active: 1981-1986

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3 patents (USPTO):Explore Patents

Title: The Innovations of Tutomu Kato: A Pioneer in Electrophotographic Technology

Introduction: Tutomu Kato, an accomplished inventor hailing from Yamatokoriyama, Japan, has made significant contributions to the field of electrophotographic technology. He holds three patents that showcase his innovative spirit and dedication to improving copying and printing processes. Kato's inventions focus on enhancing the efficiency and functionality of various components in copying machines.

Latest Patents: Kato's most recent patents reflect his expertise in developing advanced devices for photocopying machines. One notable invention is a separation mechanism for a developing device from a photoreceptor. This mechanism allows the copying machine to separate into two distinct sections, facilitating the automatic rotation of the developing device and enabling easy replacement of either component without risking damage to the photoreceptor's surface. Another critical patent is a fixing device designed for fixing images of original documents onto plain paper. This device utilizes a pair of rollers to apply pressure to the toner powder on the copy material, ensuring that the images are faithfully reproduced. The innovative use of a pressure-fixable developing powder comprising a wax component and thermoplastic resin further exemplifies Kato's inventive capabilities.

Career Highlights: Tutomu Kato has dedicated his career to developing technologies that streamline the copying process. His work at Sharp Corporation, known in its full name as Sharp Kabushiki Kaisha Corporation, has positioned him as a key player in advancements in electrophotographic copying systems. His patents not only illustrate his technical skills but also his commitment to improving user experience in document reproduction technology.

Collaborations: Throughout his career, Kato has collaborated with notable peers such as Hiroshi Kida and Masaru Nishijima. Their collective expertise and teamwork have undoubtedly contributed to the successful development and implementation of Kato's innovative technologies in the industry. These collaborations highlight the importance of teamwork in driving technological advancements.

Conclusion: Tutomu Kato stands out as a significant figure in the realm of electrophotographic innovation. His patents have paved the way for enhanced functionality and efficiency in copying machines, reflecting his forward-thinking mindset and dedication to technological progress. With ongoing advancements in the field, Kato's contributions will continue to influence the way we approach document reproduction today and in the future.

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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