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. 04, 1991
Filed:
Dec. 13, 1989
Applicant:
Inventors:
Volker Serini, Krefeld, DE;
Dieter Freitag, Krefeld, DE;
Karsten-Josef Idel, Krefeld, DE;
Uwe Westeppe, Mettmann, DE;
Ulrich Grigo, Kempen, DE;
Klaus-Christian Paetz, Burscheid, DE;
Assignee:
Bayer Aktiengesellschaft, Bayerwerk, DE;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C08G / ;
U.S. Cl.
CPC ...
528204 ; 528171 ; 528176 ; 528196 ; 528198 ; 528202 ;
Abstract
Thermoplastic aromatic polycarbonates having average molecular weights Mw of at least 10,000 which contain bifunctional carbonate structural units corresponding formula (I) ##STR1## in which R.sup.1, R.sup.2, R.sup.3, R.sup.4 independently of one another represent hydrogen, a C.sub.1-12 hydrocarbon, halogen,
Serini, Volker. (1991). Polycarbonate of polysubstituted cyclohexylidene bisphenols (U.S. Patent No. 5021542). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5021542
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile