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. 11, 1986
Filed:
May. 14, 1985
Tohru Arai, Toyoake, JP;
Junji Endo, Nagoya, JP;
Kabushiki Kaisha Toyota Chuo Kenkyusho, Aichi, JP;
Abstract
A method of forming a layer of a nitride or carbonitride of titanium, vanadium or the like on the surface of an article to be treated includes: disposing a treating material composed of refractory powder, powder of a metal or alloy of a nitride forming element and a halide power, and the article to be treated in a fluidized bed furnace; and introducing a nitrogen-containing gas into the furnace under a heated condition to fluidize the treating material, thereby effecting the surface treatment. This method provides a nitride or carbonitride layer having a smooth surface and a uniform thickness rapidly and safely without using hydrogen and a halogen vapor.