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:
May. 15, 2001
Filed:
Oct. 08, 1998
Applicant:
Inventors:
Suk-ki Kim, Suwon-si, KR;
Sang-wook Shin, Kyungki-do, KR;
Chul-han Bae, Seoul, KR;
Kwong-im Cho, Incheon-si, KR;
Assignee:
Samsung Display Devices Co., Ltd., Suwon-si, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 1/14 ;
U.S. Cl.
CPC ...
H01J 1/14 ;
Abstract
A cathode for a cathode ray tube includes a base having a closed top portion and containing nickel as its main component, an electron-emitting material layer coated on the top portion of the base and containing alkali-earth metal oxides as its main component, rare-earth metals or rare-earth metal compounds attached on a surface of the electron-emitting material layer, and a heater placed under the top portion of the base to heat it.
Kim, Suk-ki. (2001). Cathode with an electron emitting layer for a cathode ray tube (U.S. Patent No. 6232708). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6232708
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile