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:
Jul. 25, 1989
Filed:
Dec. 07, 1987
Applicant:
Inventor:
Michael L Wendt, Hope, MI (US);
Assignee:
Other;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B29C / ;
U.S. Cl.
CPC ...
264547 ; 264553 ; 264549 ; 425384 ; 425388 ;
Abstract
The method for thermoforming articles out of a sheet of plastic material including initially applying a negative pressure to the cavity and a first forming gas to the second side of the sheet facing the male mold section, switching to a second pressurizing gas for a period of time to allow a level of crystallization of the conformed sheet, and flowing a cooling stream of gas against the sheet to arrest further crystallation.
Wendt, Michael. (1989). Process for thermoforming plastic materials such as pet (U.S. Patent No. 4851178). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4851178
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile