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:
Jan. 23, 1996
Filed:
May. 06, 1994
Carl W Townsend, Los Angeles, CA (US);
Edna M Purer, Los Angeles, CA (US);
Hughes Aircraft Company, Los Angeles, CA (US);
Abstract
Undesired constituents are removed from rolled fabric or other rolled materials by: (a) placing a roll of the material containing the undesired constituents (soluble or particulate) in a cleaning chamber; (b) providing a structure for re-rolling the material within the chamber; (c) introducing into the cleaning chamber a cleaning fluid which is a dense phase fluid comprising a liquefied gas or a supercritical fluid and contacting the material containing the undesirable constituents with the cleaning fluid; and (d) exposing single layers of the material containing the undesirable constituents with the cleaning fluid for a period of time sufficient to remove the undesired constituents from the material.