Intellectual Property Office

Non-Confidential Disclosures

A New System for Photolithography and Other Applications

PSU Invention Disclosure No. 1234

Field of the Invention:

photolithography, photocurable coatings, biocompatible semi-permeable membranes

Inventors:

H.R. Allcock, C.J. Nelson, W.D. Coggio

Patent status:

Issued Patent No. 5,414,025

Background:

Chalcone and cinnamate bearing polyphosphazenes are disclosed. The polyphusphazenes contain a sufficient number of chalcone or cinnamate groups, or a combination thereof, to achieve a photocrosslinkable material. The phosphazene backbone is transparent from the near and mid-UV to the near infrared region, minimizing degradation of the skeleton both under the high intensity UV irradiation required for the photo-crosslinking reaction and during subsequent exposure to light disclosed. These photosensitive polyphosphazenes are useful for a variety of purposes, including in photolithography, photocurable coatings, for the stabilization of certain non-linear optical properties, and for use in the construction of biocompatible semi-permeable membranes which can be used to encapsulate living cells or other substances of implantation.

Contact:

Mr. Bradley A. Swope
Sr. Licensing Officer
Intellectual Property Office
The Pennsylvania State University
113 Technology Center
University Park, PA 16802-7000
Phone: (814) 863-5987
Fax: (814) 865-3591
E-mail: bradswope@psu.edu