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, 2000
Filed:
Dec. 29, 1998
Applicant:
Inventors:
Robert Joseph Cava, Princeton, NJ (US);
James Joseph Krajewski, Raritan, NJ (US);
Assignee:
Lucent Technologies Inc., Murray Hill, NJ (US);
Primary Examiner:
Int. Cl.
CPC ...
C04B / ; C04B / ;
U.S. Cl.
CPC ...
501136 ; 264681 ; 3332191 ;
Abstract
Dielectric materials comprising Ca.sub.5 R.sub.2 XO.sub.12 in which R is either Nb or Ta and X is selected from Ti and Ti.sub.1-x Zr.sub.x, have high dielectric constants (Ks), relatively low dielectric losses (Q), and low TCKs. The dielectric properties are affected by processing conditions, which for the both the niobate and tantalate embodiments preferably involve sintering and re-firing dielectric pellets at temperatures of 1400.degree. C. and above. The dielectric materials are particularly useful for microwave communications applications.