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:
Jul. 07, 1987
Filed:
Nov. 20, 1985
Hitachi, Ltd., Tokyo, JP;
Abstract
A method of photochemically treating a surface of a material is disclosed which includes a step of introducing a reaction gas into a reaction chamber having a substrate therein, to make the reaction gas be adsorbed on the surface of the substrate, and a step of exposing the substrate to radiation of a wavelength at which the absorption of radiation energy by the reaction gas existing in the inner space of the reaction chamber is negligibly small and the radiation energy is absorbed by the reaction gas adsorbed on the surface of the substrate, wherein the kind of the reaction gas and the wavelength of the radiation are selected so that the surface of a predetermined material forming a pattern on the substrate can be selectively treated.