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:
Sep. 07, 1976
Filed:
Mar. 27, 1975
Carl W Fritsch, Jr, Dushore, PA (US);
Sergej-Tomislav Buljan, Towanda, PA (US);
GTE Sylvania Incorporated, Stamford, CT (US);
Abstract
Synthetic cordierite (2Mg0,2Al.sub. 2 O.sub. 3.5SiO.sub. 2) ceramic bodies exhibiting low thermal expansions are characterized by a microstructure containing less than 10 percent by volume glass and by microcracks of certain size and frequency of occurrence and may be produced, for example, by (1) dry ball milling talc, ball clay and alpha alumina in noncontaminating media, (2) consolidating the mixture to form a green body, (3) heating the green body at a rate of up to 150.degree.C per hour to a temperature within the range of 1350.degree. to 1425.degree.C, (4) holding the body at this temperature for a time of from 1/2 to 10 hours, and (5) cooling the body to below 1,000.degree.C at a rate of up to 150.degree.C per hour. Such bodies possess good to excellent thermal shock resistance, and chemical durability and are useful, for example, as components in gas turbine engines.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile