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. 07, 1997
Filed:
Feb. 07, 1995
Applicant:
Inventors:
Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C04B / ;
U.S. Cl.
CPC ...
501 97 ; 501 98 ;
Abstract
A silicon nitride based sintered product produced with Si powder, a Si.sub.3 N.sub.4 powder, and an assistant component effective for sintering silicon nitride as raw materials. A resultant sintered product has fine tissue, exhibits little presence of pores and remaining silicon, and possesses high mechanical strength which can be enhanced by calcinating the product under low pressure after it has been reacted and first sintered.