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:
Jul. 27, 1993
Filed:
Aug. 09, 1990
Applicant:
Inventors:
James P Mathers, Woodbury, MN (US);
Robert G Frey, White Bear Lake, MN (US);
Assignee:
Minnesota Mining and Manufacturing Company, St. Paul, MN (US);
Primary Examiner:
Int. Cl.
CPC ...
C04B / ;
U.S. Cl.
CPC ...
501 96 ; 501 98 ; 501119 ; 501153 ; 106 35 ; 433-8 ;
Abstract
This invention provides a transparent aluminum magnesium oxynitride ceramic, wherein greater than 0.5 weight percent of the total ceramic composition is magnesium oxide. The ceramic article of the present invention is useful in applications where it is desirable to have a transparent ceramic including, for example, in orthodontic brackets, ferrules, and gas tight envelopes.
Published as: