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:
Feb. 21, 1989
Filed:
Nov. 02, 1987
Applicant:
Inventors:
Sujata Jagota, Ithaca, NY (US);
Rishi Raj, Ithaca, NY (US);
Assignee:
Cornell Research Foundation, Inc., Ithaca, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C30B / ;
U.S. Cl.
CPC ...
1566 / ; 156D / ; 156D / ; 2329 / ; 423625 ; 501 95 ;
Abstract
Alpha-alumina whiskers are produced by forming a film of boehmite gel seeded with alpha-alumina seed material, preferably sapphire, and heating at 900.degree. C. to 1200.degree. C. for 5 minutes to 2 hours.