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:
Aug. 07, 2001
Filed:
Nov. 08, 1999
Masahiro Abe, Nagoya, JP;
Takahiro Takahashi, Nagoya, JP;
NGK Insulators, Ltd., Nagoya, JP;
Abstract
A crystallized glass has a main crystal phase of &agr;-quartz (SiO,) and lithium disilicate (Li,·2SiO,) and has a thermal expansion coefficient of (90˜130)×10,/K at −50° C.˜70° C. The crystallized glass mentioned above, has a following chemical composition; 70 wt %≦SiO,≦80 wt %, 5 wt %≦Al,O,≦9 wt %, 7 wt %≦Li,O≦10 wt %, 1 wt %≦P,O,≦3 wt %, 0 wt %≦K,O≦3 wt %, 0 wt %≦CaO≦3 wt %, 0 wt %≦BaO≦4 wt %, 0 wt %≦ZnO≦4 wt %, 0 wt %≦Sb,O,≦1 wt %, 0 wt %≦ZrO,≦6 wt %, 0 wt %≦Nb,O,≦6 wt %, 0 wt %≦SnO,≦4 wt %, 0 wt %≦MoO,≦3 wt %, 0.7 wt %≦(Nb,O,+SnO,+MoO,)≦6 wt %.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile