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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.:

US 11680164 B1

PDFFull Text
Date of Patent:
Jun. 20, 2023

Filed:

Apr. 12, 2019

By means of ionizing radiation sterilizable moulded parts made from polycarbonate

Applicant:

Covestro Intellectual Property Gmbh & Co. KG, Leverkusen, DE;

Inventors:

Derk Erich Wandner, Odenthal, DE;

Pierre Moulinie, Oakdale, PA (US);

Ralf Hufen, Duisburg, DE;

Assignee:

Covestro Intellectual Property GmbH & Co. KG, Leverkusen, DE;

Attorney:

The Webb Law Firm

Primary Examiner:

David J Buttner

Int. Cl.
CPC ...
A61L 2/08 (2006.01); C08L 69/00 (2006.01); C08L 71/02 (2006.01); C08K 5/372 (2006.01); A61L 29/06 (2006.01); A61L 29/14 (2006.01);
U.S. Cl.
CPC ...
C08L 69/00 (2013.01); A61L 2/087 (2013.01); A61L 29/06 (2013.01); A61L 29/14 (2013.01); C08K 5/372 (2013.01); C08L 71/02 (2013.01); A61L 2202/181 (2013.01); A61L 2202/24 (2013.01); C08L 2201/08 (2013.01);
Abstract

The invention relates to a thermoplastic composition comprising A) aromatic polycarbonate, B) 0.1 to 5 wt.-% one or more polyether polyols and C) 0.01 to 0.30 wt.-% 3,3'-thiodipropionic acid. The invention also relates to medical technology products or parts of medical technology products consisting of such compositions as well as to a process for sterilization of such moulded parts by means of irradiation. The polycarbonate compositions according to the invention show significantly less yellowing after irradiation than known compositions and still have good mechanical properties.

Find Patent Forward Citations

Wandner, Derk. (2023). By means of ionizing radiation sterilizable moulded parts made from polycarbonate (U.S. Patent No. 11680164). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/11680164

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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