This inventor holds 4 USPTO granted patents. Top assignee: Mitsui Toatsu Chemicals, Incorporated. Active years: 1991-1993.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Aichi, JP (1992)
- Nagoya, JP (1991 - 1993)
Company Filing History:
Years Active: 1991-1993
Title: Yasuhiko Ohta: Inventor of Advanced Polymer Films.
Introduction
Yasuhiko Ohta is an inventor associated with Nagoya, Japan, and Mitsui Toatsu Chemicals, Incorporated. His work includes innovations in high-performance polymer films. The available information credits him with 4 patents.
Latest Patents
One of Ohta’s listed patents concerns a transparent polyimide film and its preparation. The film is made from polyimide with specified recurring units and is characterized by a density of 1.335 to 1.390 g/cm³ and/or a refractive index of 1.605 to 1.680, measured at 23°C in the thickness direction. The disclosed process uses melt extrusion, casting on a chill roller, uniaxial or biaxial stretching to orient the molecules, and heat treatment to set the film.
Another listed patent is titled “Method for Preparing Biaxially Stretched Polyether Ether Ketone Film.” It addresses the preparation of a biaxially stretched film made from polyether ether ketone.
Career Highlights
Ohta’s listed inventions focus on polymer-film materials and manufacturing methods. His association with Mitsui Toatsu Chemicals connects his patent work with industrial chemical research and development.
Collaborations
Masumi Saruwatari and Yasuko Honji are identified as Ohta’s coworkers.
Conclusion
Yasuhiko Ohta’s listed patent work highlights methods for producing transparent polyimide and biaxially stretched polyether ether ketone films, reflecting an emphasis on advanced polymer materials and film processing.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile