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:
Nov. 01, 1988
Filed:
Jul. 15, 1987
Applicant:
Inventors:
Steven G Barbee, Dover Plains, NY (US);
Hung-Chang Huang, San Jose, CA (US);
Donald J Hunt, Middletown, NY (US);
Jungihl Kim, Peekskill, NY (US);
Jae M Park, Mahopac, NY (US);
Charles H Perry, Poughkeepsie, NY (US);
Da-Yuan Shih, Poughkeepsie, NY (US);
Assignee:
International Business Machines Corporation, Armonk, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ; B32B / ; B32B / ; C03B / ;
U.S. Cl.
CPC ...
428210 ; 428432 ; 428426 ; 4285428 ; 428678 ; 428901 ; 156 89 ; 10628716 ; 10628718 ; 10628734 ;
Abstract
Strengthened ceramic and a method for increasing the mechanical strength of fully sintered ceramic articles, in particular alumina type ceramic and glass-ceramic articles. Such articles are strengthened by forming a compresssive material layer of amorphous silicon dioxide or refractory metal nitride on the surface of the article to be strengthened.