This inventor holds 2 USPTO granted patents. Top assignees: Goi Chemical Company, Ltd., Hitachi Chemical Company, Ltd., Maruzen Oil Co. Ltd.. Active years: 1979-1993.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
1 out of 2 
1 out of 1,641 
1 out of 32 Years Active: 1979-1993
Title: Hiroshi Okamura: Patents in Textile Technology and Chemical Processing
Introduction
Hiroshi Okamura is an inventor associated with Chiba, Japan. His patent work spans textile materials and chemical processing, with 2 patents listed.
Latest Patents
Okamura’s patent, “Water Absorptive and Retentive Flexible Cloth and Method for Producing,” describes a treatment for synthetic-fiber cloth, such as nylon or Tetron, to improve its water and oil absorption and its ability to release water during dehydration. The process uses a composite of chemically modified collagen short fibers and polyurethane resin.
His patent, “Process for Producing Highly Pure p-Tertiary-Butyl Phenol,” presents a method for producing highly pure p-tertiary-butyl phenol. It reacts phenol with an olefin composition containing isobutylene oligomer and a smaller amount of an n-butene–isobutylene codimer, using water and a synthetic silica-alumina catalyst at 140–230°C.
Career Highlights
Okamura’s listed company affiliations include Goi Chemical Company, Ltd., and Showa Shell Sekiyu Kabushiki Kaisha. His patents reflect work in both functional textile materials and industrial chemical production.
Collaborations
Yasuyuki Iguchi and Takayuki Saito are identified as Okamura’s coworkers.
Conclusion
Hiroshi Okamura’s patent portfolio connects advances in absorbent, retentive cloth with methods for producing high-purity chemical compounds.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile