This inventor holds 1 USPTO granted patent. Top assignee: Toagosei., Ltd.. Active years: 2026.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
Years Active: 2026
Title: Ryutaro Tsubouchi: Inventor in Chemical Mechanical Polishing
Introduction
Ryutaro Tsubouchi is an inventor associated with Aichi, Japan, and Toagosei Co., Ltd. His patent work concerns dispersant technology for chemical mechanical polishing.
Latest Patents
The provided information lists one patent for Tsubouchi: “Dispersant and polishing agent composition.” The invention describes a dispersant for chemical mechanical polishing that can flatten the surface of an insulating layer, a wiring layer, or both. It includes a block copolymer with two polymer blocks: one containing structural units derived from specified amide- or ester-group-containing vinyl monomers, and another containing structural units with an ionic functional group. Tsubouchi is credited with 1 patent in the supplied data.
Career Highlights
Tsubouchi’s listed patent reflects work on polymer-based dispersants and polishing-agent compositions. The supplied information identifies Toagosei Co., Ltd. as his company.
Collaborations
Akihiro Goto and Sachiko Imura are listed as Tsubouchi’s coworkers. The available information does not specify their roles in the patent or whether they collaborated on this invention.
Conclusion
Ryutaro Tsubouchi’s documented invention focuses on a block-copolymer dispersant for chemical mechanical polishing, connecting his patent activity with materials and polishing technology.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile