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:
Nov. 25, 1997
Filed:
Mar. 07, 1996
Applicant:
Inventors:
Barry Gene Calvert, Covington, VA (US);
Ralph Scott Peterson, Clifton Forge, VA (US);
Assignee:
Westvaco Corporation, New York, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
1562728 ; 156251 ; 156253 ; 264284 ; 264134 ;
Abstract
This invention relates to a method and apparatus for heat sealing polymer coated paperboard substrates using a uniform energy distributed light energy beam. Such structures of this type, generally, use lasers which allow a very accurate placement of the sealing energy and a controllable energy level.