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:
Feb. 13, 2024
Filed:
Oct. 06, 2021
University of Pittsburgh—of the Commonwealth System of Higher Education, Pittsburgh, PA (US);
Prashant N. Kumta, Pittsburgh, PA (US);
Sangeetha Kunjukunju, Pittsburgh, PA (US);
Nicole J. Ostrowski, Pittsburgh, PA (US);
Abhijit Roy, Pittsburgh, PA (US);
Boeun Lee, Pittsburgh, PA (US);
Madhumati Ramanathan, Hillsboro, OR (US);
UNIVERSITY OF PITTSBURGH—OF THE COMMONWEALTH SYSTEM OF HIGHER EDUCATION, Pittsburgh, PA (US);
Abstract
The invention relates to polyelectrolyte multilayer coatings and, methods for their preparation and application to substrates to enhance the bioactivity and corrosion protection of the substrates' surface. The invention is particularly suitable for coating substrates employed for medical applications, such as but not limited to medical implant devices for drug and/or biologics delivery in a patient. The substrate has a positive or negative charge. The polyelectrolyte multilayer coatings include at least a first polymer layer and a second polymer layer. The first polymer and second polymer have opposite charges. Each of the polymer layers is individually applied using a layer-by-layer such that an alternating charge multilayer coating is formed.