The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 22, 1999
Filed:
Dec. 03, 1997
Fumihiko Saito, Takefu, JP;
Shigeru Sakai, Takefu, JP;
Shin-Etsu Chemical Co., Ltd., Tokyo, JP;
Abstract
Proposed is a powder consisting of rare earth oxide-based composite particles having an average particle diameter in the range from 0.1 to 100 .mu.m, each of which has a composite structure consisting of a core of a rare earth oxide and a coating layer of a rare earth hydroxide, the coating layer of the rare earth hydroxide having an average thickness of at least 5 nm but not exceeding 10% of the average particle diameter of the composite particles. While a rare earth oxide powder is useful as a sintering aid of a ceramic powder which is used in molding usually in the form of an aqueous slurry, the composite particles when added to an aqueous slurry of a ceramic powder exhibit a remarkable effect as a viscosity stabilizer or gelation inhibitor of the aqueous slurry so that improvements can be obtained in the productivity of the manufacturing process and quality of ceramic products.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile