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. 10, 1981
Filed:
Jun. 13, 1979
Applicant:
Inventors:
Joseph Boba, Fort Lee, NJ (US);
Robert P Conger, Park Ridge, NJ (US);
William H Pedrick, Bound Brook, NJ (US);
Assignee:
Congoleum Corporation, Kearny, NJ (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C / ;
U.S. Cl.
CPC ...
156645 ; 28160 ; 156655 ; 156668 ; 252 792 ; 252 794 ;
Abstract
Multi-level nylon pile fabrics having a selectively etched surface and a process of developing an etched effect that comprises selectively applying a chemical fiber etching agent to the surface of a level pile fabric, controlling the depth of penetration into said fabric and heating in the presence of steam to a temperature of 180.degree. F.-250.degree. F. to destroy part of the pile in the treated areas and thus to reduce the height of the pile in the treated areas creating the desired multi-level effect.