Ina, Japan

Hiroshi Kawashima

This inventor holds 4 USPTO granted patents. Top assignees: Seiko Epson Corporation, Kabushiki Kaisha Suwa Seikosha, Nippon Oil Fats Co., Ltd.. Active years: 1985-1991.

IDiyas Innovation Intelligence. (2026). Inventor Profile: Hiroshi Kawashima. Retrieved from https://idiyas.com/inventor/hiroshi-kawashima-5fhm9e5g

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 = 3.1

ph-index = 4

Forward Citations = 289(Granted Patents)


Location History:

  • Suwa, JP (1985 - 1986)
  • Ina, JP (1990)
  • Nagano, JP (1991)

Company Filing History:


Years Active: 1985-1991

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4 patents (USPTO):Explore Patents

Title: Hiroshi Kawashima: Innovator in Synthetic Resin Technologies

Introduction

Hiroshi Kawashima is a notable inventor based in Ina, Japan. He has made significant contributions to the field of synthetic resin technologies, holding a total of 4 patents. His work primarily focuses on advancements in lens materials and contact lens articles.

Latest Patents

Kawashima's latest patents include innovative designs for coated synthetic resin lenses. These lenses feature a primer layer made from a copolymer of acrylic and/or methacrylic monomers combined with an aromatic vinyl compound. This design enhances the adhesion properties between the base material and a cured abrasion-resistant layer of colloidal silica, resulting in lenses with improved impact resistance. Another significant patent involves a contact lens article made from a silicon- and fluorine-containing resin. This resin is created by copolymerizing starting monomer components that include a silicon-containing compound and a fluorine-containing compound, leading to enhanced performance characteristics in contact lenses.

Career Highlights

Throughout his career, Kawashima has worked with prominent companies such as Seiko Epson Corporation and Kabushiki Kaisha Suwa Seikosha. His experience in these organizations has allowed him to develop and refine his innovative ideas in synthetic resin applications.

Collaborations

Kawashima has collaborated with notable coworkers, including Takao Mogami and Satoshi Kubota. Their combined expertise has contributed to the successful development of various projects in the field of synthetic resins.

Conclusion

Hiroshi Kawashima's contributions to synthetic resin technologies have made a significant impact in the industry. His innovative patents and collaborations highlight his dedication to advancing lens materials and contact lens articles.

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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