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:
Feb. 25, 2025
Filed:
Sep. 20, 2022
Applicant:
National Institute for Materials Science, Ibaraki, JP;
Inventors:
Assignee:
National Institute for Materials Science, Ibaraki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 37/075 (2006.01); H01J 9/04 (2006.01); H01J 37/26 (2006.01);
U.S. Cl.
CPC ...
H01J 37/075 (2013.01); H01J 9/04 (2013.01); H01J 37/26 (2013.01); H01J 2237/06308 (2013.01);
Abstract
The purpose of the present invention, relating to lanthanide boride, which is known as a low work function material, is to provide a novel low work function material with low chemical reactivity, in particular a low work function material of which the material surface, after being exposed to atmospheric gases, can be cleaned at a heating temperature lower than in the prior art. The present invention is a laminate containing a lanthanide boride film formed on a substrate, the surface of said film being covered by a thin film, wherein the thin film is a monatomic layer of a hexagonal boron nitride thin film.