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:
Dec. 13, 1988
Filed:
May. 16, 1986
Applicant:
Inventor:
Paul M Coffman, Houston, TX (US);
Assignee:
Rampart Packaging Inc., Williamsburg, VA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C / ; B29C / ;
U.S. Cl.
CPC ...
264152 ; 264153 ; 264160 ; 2642974 ; 2642975 ; 264D / ;
Abstract
This invention encompasses a process for making containers from multiple stacked billets which comprises the steps of preparing thermoplastic sheet, cutting or punching billets from the sheet, stacking two or more of the billets together, heating the stacked billets or the mating surfaces of the billets to or above the fusion temperature of the mating surfaces, where the billets adhere to each other, and thermoforming the stacked billets into containers.