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. 10, 2001
Filed:
Sep. 03, 1998
Debra Anne Fleming, Berkeley Heights, NJ (US);
David Wilfred Johnson, Bedminster, NJ (US);
Glen Robert Kowach, Edison, NJ (US);
Paul Joseph Lemaire, Madison, NJ (US);
Agere Systems Guardian Corp., Allentown, PA (US);
Abstract
Ceramic monoliths are described which exhibit tunable coefficients of thermal expansion from about −5 to −11×10,° C.,near ambient temperatures. These two-phase ceramics, which are fabricated, for example, by reactive sintering of WO,and ZrO,, consists of a matrix of ZrW,O,with inclusions of ZrO,having diameters less than 10 &mgr;m. Additives may increase the density of the monoliths to greater than 98% of the calculated density. Green body densities, pre-sintered particle size distribution, sintering atmosphere, microstructure, and mechanical properties are discussed. These ceramics may be used as substrates for thermally compensating fiber Bragg gratings.