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:
Jul. 25, 1989
Filed:
Nov. 19, 1986
Applicant:
Inventors:
Otto Lindig, Mainz, DE;
Wolfgang Pannhorst, Mainz, DE;
Assignee:
Schott Glaswerke, Mainz, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C03C / ; C03C / ;
U.S. Cl.
CPC ...
501-4 ; 501-7 ; 501 55 ; 501 63 ; 501 67 ; 501 69 ; 501 70 ;
Abstract
Base-glasses for glass ceramics cotaining h-quartz solid solution crystals, with a maximum relative length variation of 1.times.10.sup.-5 and a linear thermal expansion coefficient less than 0.1.times.10.sup.-6 /K, comprise (in weight percent) 50-65 SiO.sub.2, 18-27 Al.sub.2 O.sub.3, 0-10 P.sub.2 O.sub.5,0-1 B.sub.2 O.sub.3, 2.5-4 Li.sub.2 O, 0-2 Na.sub.2 O, 0-2 K.sub.2 O, 0-0.5 MgO, 1-5 ZnO, 1-4 CaO, 1-5 BaO, 0-5 TiO.sub.2, 0-3 ZrO.sub.2 and 0-1.5 As.sub.2 O.sub.3.
Lindig, Otto. (1989). Glass-ceramic with specific thermal expansion behavior (U.S. Patent No. 4851372). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4851372
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile