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:
Apr. 12, 2005
Filed:
May. 30, 2003
Shankar Madras Venugopal, Karnataka, IN;
Alok M. Srivastava, Niskayuna, NY (US);
Holly Ann Comanzo, Niskayuna, NY (US);
Vikas Midha, Clifton Park, NY (US);
William Winder Beers, Chesterland, OH (US);
Gopi Chandran Ramachandran, Karnataka, IN;
Mukunda Srinivas Adyam, Karnataka, IN;
Shankar Madras Venugopal, Karnataka, IN;
Alok M. Srivastava, Niskayuna, NY (US);
Holly Ann Comanzo, Niskayuna, NY (US);
Vikas Midha, Clifton Park, NY (US);
William Winder Beers, Chesterland, OH (US);
Gopi Chandran Ramachandran, Karnataka, IN;
Mukunda Srinivas Adyam, Karnataka, IN;
General Electric Company, Niskayuna, NY (US);
Abstract
An electron emissive composition comprises a barium tantalate composition in an amount of about 50 to about 95 wt %; and a ferroelectric oxide composition in an amount of about 5 to about 50 wt %, wherein the weight percents are based on the total weight of the barium tantalate composition and the ferroelectric oxide composition. A method for manufacturing an electron emissive composition comprises blending a barium tantalate composition in an amount of about 50 to about 95 wt % with a ferroelectric oxide composition in an amount of about 5 to about 50 wt % to form an electron emissive precursor composition, wherein the weight percents are based on the total weight of the barium tantalate composition and the ferroelectric oxide composition; and sintering the composition at a temperature of about 1000° C. to about 1700° C.