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:
Sep. 19, 2023
Filed:
Jan. 31, 2020
Applicant:
Lanxess Solutions Us Inc., Shelton, CT (US);
Inventors:
Matthew P. Burdzy, South Windsor, CT (US);
Thomas Harald Peter, Southbury, CT (US);
Assignee:
LANXESS Corporation, Pittsburgh, PA (US);
Primary Examiner:
Int. Cl.
CPC ...
E21B 33/08 (2006.01); C09K 3/00 (2006.01); C09K 3/10 (2006.01);
U.S. Cl.
CPC ...
E21B 33/085 (2013.01); C09K 3/1021 (2013.01); C09K 2003/1053 (2013.01);
Abstract
The present invention relates to sealing elements for blowout preventers comprising a sealing interface region, and a second region, wherein said sealing interface region is formed of a first polymer and said second region is formed of a second polymer, the first and second polymers having different Shore A hardnesses, including sealing elements made of dual hardness polyurethane.