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:
Jan. 31, 1978
Filed:
Aug. 27, 1973
Applicant:
Inventor:
Jack Raymond Bird, Chellaston, EN;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C04B / ;
U.S. Cl.
CPC ...
106 735 ; 364332 ; 264D / ;
Abstract
The invention concerns a method of making an article from silicon nitride powder and a fluxing agent. The method comprises hot pressing a first section of the silicon nitride article, transferring the pressed section to a further mould large enough to accomodate sufficient silicon nitride powder and fluxing agent to produce the other section of the article, and subsequently hot pressing the contents of the mould to solidify the silicon nitride powder and fluxing agent into the second section of the article which becomes bonded to the first section.