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:
Oct. 07, 2008
Filed:
Nov. 20, 2002
Applicant:
Masato Yamanobe, Tokyo, JP;
Inventor:
Masato Yamanobe, Tokyo, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B05D 5/12 (2006.01); C01B 31/02 (2006.01); H01J 9/02 (2006.01); H05B 3/03 (2006.01); H05B 6/54 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method of making an electron-emitting device including the steps of (A) preparing a member comprising first and second substances composed of carbon, wherein the substances have respective reaction rates different from each other for a gas, and (B) heating the member in an atmosphere containing the gas.