This inventor holds 5 USPTO granted patents. Top assignee: International Business Machines Corporation. Active years: 1992-2004.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Location History:
- Yokohama, JP (1992 - 1994)
- Himeji, JP (2004)
Company Filing History:
Years Active: 1992-2004
Title: Innovations of Toshihiko Koseki
Introduction
Toshihiko Koseki is a notable inventor based in Yokohama, Japan. He has made significant contributions to the field of liquid crystal displays and color filters. With a total of five patents to his name, Koseki's work has had a considerable impact on technology.
Latest Patents
One of Koseki's latest patents is related to liquid crystal displays. This invention involves a liquid crystal display consisting of a first substrate and a second substrate facing each other. Either or both of these substrates are disposed in a non-display region, with spacers made of a photosensitive resin regulating the cell gaps between the substrates. The liquid crystal is sandwiched between the two substrates, and either a dynamic hardness value or a plastic deformation hardness value is maintained within a fixed range.
Another significant patent is for a color filter and the method of fabricating it. This invention includes a reactive dye added to a photosensitive composite containing pigment to form a high-contrast color filter. The reactive dye reacts with the binder polymer of the photosensitive composite, resulting in a color filter with a high contrast ratio. The process involves depositing the photosensitive composite on a glass substrate over a shielding layer, followed by the deposition of a PVA layer. A masking layer defines the area for the specific primary color, and this process is repeated for the remaining primary colors.
Career Highlights
Koseki is currently employed at International Business Machines Corporation, commonly known as IBM. His work at IBM has allowed him to explore and develop innovative technologies that enhance display and color filter capabilities.
Collaborations
Some of Koseki's notable coworkers include Toshihiro Ueki and Tetsuya Fukunaga. Their collaboration has likely contributed to the advancements in their respective fields.
Conclusion
Toshihiko Koseki's contributions to liquid crystal displays and color filters demonstrate his innovative spirit and technical expertise. His patents reflect a commitment to enhancing technology in meaningful ways.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile