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:
Mar. 30, 1993
Filed:
Jul. 22, 1991
Kazuo Ishibashi, Yokohama, JP;
Digital Equipment Corporation, Maynard, MA (US);
Abstract
A method for treating the surface of a solid to impart a desired degree of roughness by forming a large number of tiny indented points is disclosed. First, a large number of tiny liquid droplets is dispersed all over the surface of the solid. Then, a layer of a diluted solution of plastic dissolved in a volatile solvent is formed on the surface, covering the droplets. After the volatile solvent has evaporated, a plastic film containing a large number of tiny holes is formed on the surface of the solid. Etching is then done on the surface using the said plastic film as a mask, thus, a large number of tiny indented points are formed on the surface of the solid.