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:
Sep. 02, 1997
Filed:
May. 13, 1996
Kuo-Chun Chen, Encinitas, CA (US);
Quantum Group, Inc., San Diego, CA (US);
Abstract
A method for making rare earth metal oxide ceramic precursor composition comprising reacting a rare earth metal alkoxide with a complexing agent to give a mixture of complexing agent/alkoxide rare earth metal complexes is disclosed. The mixture is hydrolyzed and the precursor composition is isolated. Solubility of the precursor composition in non-polar or polar solvents is affected by the selection of complexing agent amongst other factors. At least partial dissolution of the precursor composition in a solvent gives a preceramic liquid which upon evaporation of the solvent and heating gives a rare earth metal oxide ceramic. Utility of the preceramic liquid include the formation of rare earth metal oxide fibers, thin films, coatings, foams, powders, cast or molded objects or it may be used as a ceramic adhesive.