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:
Mar. 25, 2025
Filed:
May. 03, 2021
Sio2 Medical Products, Inc., Auburn, AL (US);
Christopher Weikart, Auburn, AL (US);
John T. Felts, Alameda, CA (US);
Thomas E. Fisk, Green Valley, AZ (US);
Robert S. Abrams, Albany, NY (US);
John Ferguson, Auburn, AL (US);
Jonathan R. Freedman, Auburn, AL (US);
Robert J. Pangborn, Harbor Springs, MI (US);
Peter J. Sagona, Pottstown, PA (US);
SIO2 MEDICAL PRODUCTS, LLC, Auburn, AL (US);
Abstract
A vessel including a thermoplastic wall enclosing a lumen is disclosed. The wall supports an SiOcomposite barrier coating or layer, for which x is from 1.8 to 2.4, between the wall and the lumen. High Resolution X-ray Photoelectron Spectroscopy (XPS) shows the presence of an interface between the composite barrier coating or layer and the wall or substrate. In one aspect, the interface has at least 1 mol. % O—Si—C covalent bonding, as a proportion of the O—Si—C covalent bonding plus SiObonding. In another aspect, the interface has an Si 2p chemical shift to lower binding energy (eV), compared to the binding energy of SiObonding. The result is a tightly adherent composite barrier coating or layer having a high degree of adhesion to the substrate under practical use conditions. Methods of applying the composite barrier coating or layer are also disclosed.