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. 20, 1978
Filed:
Oct. 02, 1975
Applicant:
Inventors:
James Pappis, Westwood, MA (US);
Lawrence M Hagen, Reed's Ferry, NH (US);
Pei-Ching Li, Northbrook, IL (US);
Assignee:
Raytheon Company, Lexington, MA (US);
Primary Examiner:
Int. Cl.
CPC ...
C23C / ; C23C / ;
U.S. Cl.
CPC ...
4272 / ; 423290 ; 427294 ; 428538 ; 264 81 ;
Abstract
The invention disclosed herein relates to a body of substantially pure isotropic boron nitride in which individual anisotropic crystals of boron nitride are substantially randomly oriented and pyrolytically bonded to form a body having substantially improved electrical and mechanical properties compared with anisotropic boron nitride bodies in which individual boron nitride crystals are hot press bonded.