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:
May. 03, 2005
Filed:
Feb. 22, 2002
Applicants:
Je-suk Woo, Bucheon-city, Kyungki-do, KR;
Hyeong-keor Yoo, Bucheon, KR;
Inventors:
Je-Suk Woo, Bucheon-city, Kyungki-do, KR;
Hyeong-Keor Yoo, Bucheon, KR;
Assignees:
Woojin Corporation, Bucheon, KR;
Other;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B003/14 ; B32B003/00 ; B32B003/16 ;
U.S. Cl.
CPC ...
Abstract
Disclosed is a floor covering, in which a surface material such as wood, Korean paper, textile fabric, and thermosetting resin sheet is attached to a surface of a perforated high density PVC sheet. Shrinkage or expansion differences between the surface material and the PVC sheet are removed because multiple holes of the perforated high density PVC sheet offset shrinkage or expansion of the PVC sheet, thereby cracks or curling of the floor covering are prevented and the floor covering can have a smooth appearance.