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:
Jun. 28, 1983
Filed:
Mar. 25, 1981
Applicant:
Inventor:
Jan P van Dongeren, Bergentheim, NL;
Assignee:
Wavin B.V., Zwolle, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C / ; F16L / ;
U.S. Cl.
CPC ...
156196 ; 138109 ; 138115 ; 138148 ; 138172 ; 156198 ; 156293 ; 156294 ; 1563042 ; 1563045 ; 1563046 ; 1563082 ; 264310 ; 264322 ; 2851 / ; 2851 / ; 285138 ; 285288 ;
Abstract
Plastic pipes comprising an inner and outer wall being interconnected by lengthwise extending connecting partitions, forming channels, the ends of the channels being each separately sealed by sealingly pressing the end walls of a channel to each other after these walls have been heated to a temperature surpassing the plasticizing temperature.
van Dongeren, Jan. (1983). Method of making plastic pipes having walls with lengthwise extending (U.S. Patent No. 4390383). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4390383
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile