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. 19, 2013
Filed:
Jul. 30, 2009
Yoshihisa Ishiguro, Tokyo, JP;
Masanori Haba, Machida, JP;
Ryouichi Suzuki, Tsukuba, JP;
Life Technology Research Institute, Inc., Tokyo, JP;
Abstract
An electron emitter includes a guard electrodeon the outer circumferential side of a carbon film structurewhich is formed on a substrateby plasma CVD method. This guard electrodeincludes a curved surface portion (a curved surface portion that curves from top toward a side opposite to the film-forming direction)convex in a film-forming direction of the carbon film structure. A curvature radius Rof an outer-circumferential-side portion of the curved surface portionis larger than or equal to a curvature radius Rof a carbon-film-structure-side portion of the curved surface portion
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile