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:
Dec. 14, 1982
Filed:
Apr. 16, 1981
Applicant:
Inventors:
Yasunobu Kawae, Kokubu, JP;
Michio Kakimura, Kokubu, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
D21F / ;
U.S. Cl.
CPC ...
162301 ; 162352 ; 162374 ;
Abstract
A supporting member of the papermaking screen in paper machines is disclosed, which is made with a sintered body consisting essentially of silicon nitride, having a porosity of less than about 0.8% whereby the abrasion loss rate of the papermaking screen is able to be remarkably reduced as compared with the conventional supporting members made of alumina ceramic, as a result of which the useful life of the papermaking screen can be lengthened greatly.