Kamakura, Japan

Masahiro Ishidoya

This inventor holds 24 USPTO granted patents, plus 1 CIPO patent, primarily in Thermosetting Compositions. Top assignees: Nippon Oil Fats Co., Ltd., Nof Corporation, Kabushiki Kaisha Toshiba. Active years: 1991-2006.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Masahiro Ishidoya. Retrieved from https://idiyas.com/inventor/masahiro-ishidoya

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


% Patents Active = 95.8


Average Co-Inventor Count = 4.7

ph-index = 9

Forward Citations = 211(Granted Patents)


Location History:

  • Yokohama, JP (1991 - 1993)
  • Kamakura, JP (1992 - 1997)
  • Hyogo, JP (1998)
  • Chigasaki, JP (1997 - 2006)

Company Filing History:


Years Active: 1991-2006

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Areas of Expertise:
Polishing Cloth
Thermosetting Composition
Aqueous Cutting Fluid
Coating Composition
Thermal Latent Acid Catalyst
Colored Composition
Pigment Dispersing Agent
Chromatic-Color Pigment
Molding Methods
Epoxy Denatured Alkyd
Hard Brittle Materials
Resin Composition
24 patents (USPTO):Explore Patents

Title: The Innovative Mind of Masahiro Ishidoya

Introduction: Masahiro Ishidoya, an accomplished inventor based in Kamakura, Japan, holds an impressive portfolio of 24 patents. His work focuses primarily on advancements in polishing technology and semiconductor fabrication methods, showcasing his significant contributions to engineering and materials science.

Latest Patents: Among Ishidoya's most recent innovations are two notable patents. The first is a polishing cloth designed to maintain stable polishing performance over extended periods without requiring dressing treatments. This cloth features an abrasive layer made from a hydrolyzable polymer material, optimizing its effectiveness in various applications. The second patent involves a thermosetting composition that includes polyhemiacetal ester resin combined with a powdery thermosetting composition, which presents new possibilities in material science.

Career Highlights: Over the years, Ishidoya has established himself in the field by working with reputable companies, including Nippon Oil & Fats Co. Ltd. and Nof Corporation. His experiences in these organizations have equipped him with the expertise to develop innovative solutions that address complex technological challenges.

Collaborations: Throughout his career, Ishidoya has collaborated with esteemed colleagues such as Osamu Ohe and Kishio Shibato. These partnerships have fostered an environment of creativity and shared knowledge, driving the development of groundbreaking patents and inventions.

Conclusion: With a robust portfolio of patents and a career marked by significant collaborations, Masahiro Ishidoya continues to be an influential figure in the realm of innovation. His dedication to enhancing polishing technologies and semiconductor manufacturing methods underscores the vital role inventors play in advancing technology for 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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