This inventor holds 8 USPTO granted patents and 1 EPO patent. Top assignees: Mitsui Chemicals, Inc., Mitsui Toatsu Chemicals, Incorporated. Active years: 1995-2012.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Kanagawa-ken, JP (1996 - 2000)
- Kanagawa, JP (1995 - 2002)
- Yokohama, JP (2002 - 2012)
Company Filing History:

Years Active: 1995-2012
Title: Kazuhiko Ohkubo: Innovator in Polyurethane Technologies
Introduction
Kazuhiko Ohkubo is a prominent inventor based in Kanagawa, Japan. He has made significant contributions to the field of polyurethane technology, holding a total of 8 patents. His work focuses on the development of highly functionalized polyether polyols and innovative foam products.
Latest Patents
Ohkubo's latest patents include advancements in polyether polyols and rigid polyurethane foam. One notable patent describes a process for producing highly-functionalized, low-viscosity polyether polyols through the dehydration condensation reaction of alcohols. This method utilizes glycerin, which can be derived from natural fats and oils, to create polyether polyols with a glycerin percentage exceeding 50 mol %. Another significant patent involves the creation of high-durability flexible polyurethane cold cure molded foam. This foam boasts an overall density between 35 kg/m and 45 kg/m and exhibits excellent durability, particularly in terms of hardness change ratio and wet heat compression set.
Career Highlights
Throughout his career, Kazuhiko Ohkubo has worked with notable companies such as Mitsui Chemicals, Inc. and Mitsui Toatsu Chemicals, Incorporated. His expertise in polyurethane technology has positioned him as a key figure in the industry, contributing to the development of innovative materials and processes.
Collaborations
Ohkubo has collaborated with talented individuals in his field, including Tsukuru Izukawa and Tomoki Tsutsui. These partnerships have further enhanced his research and development efforts, leading to groundbreaking advancements in polyurethane applications.
Conclusion
Kazuhiko Ohkubo's contributions to polyurethane technology through his patents and collaborations highlight his role as an influential inventor. His work continues to impact the industry, paving the way for future innovations in material science.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile