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:
Jan. 02, 1990
Filed:
Jun. 30, 1988
Applicant:
Inventors:
Wolfgang K Martin, Williamsburg, VA (US);
James R Ryffel, Lake Jackson, TX (US);
Hans H Schuster, Erpolzheim, DE;
Chih-Peng Wen, Lake Jackson, TX (US);
Assignee:
BASF Aktiengesellschaft, Ludwigshafen, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528315 ; 528323 ; 528480 ; 528481 ; 528483 ;
Abstract
A process for tempering unextracted polycaprolactam is disclosed which results in polycaprolactam having suitable physical and chemical properties for melt extrusion and spinning, without the need for conventional solvent/water extraction and drying of crude granules.
Martin, Wolfgang. (1990). Continuous process for the hydrolytic production of polycaprolactam by (U.S. Patent No. 4891420). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4891420
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile