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:
Nov. 18, 1980
Filed:
Nov. 22, 1978
Applicant:
Inventors:
Assignee:
Nitto Boseki Co., Ltd., Fukushima, JP;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C03C / ; C03C / ;
U.S. Cl.
CPC ...
106 50 ; 106 54 ; 106 99 ;
Abstract
A glass composition comprising 54-60% by weight of SiO.sub.2, 13-16% by weight of ZrO.sub.2, 12-15% by weight of Na.sub.2 O, 5.5-14% by weight of MnO and 0-7% by weight of CaO, in which MnO+CaO is 11% by weight or more and MnO.gtoreq.CaO, can produce alkali resistant glass fibers which can be used for reinforcing cement products.