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. 16, 1999
Filed:
Dec. 02, 1996
Applicant:
Inventors:
Julia G Levy, Vancouver, CA;
Modestus O Obochi, Vancouver, CA;
Assignee:
QLT Phototherapeutics, Inc., Vancouver, CA;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
A61N / ; I61M / ;
U.S. Cl.
CPC ...
604 20 ; 604 49 ; 424810 ; 128898 ;
Abstract
Donor tissue containing antigen-presenting cells (APCs) can be modified to reduce rejection when the donor tissue is used as an allograft by exposing the donor tissue which has been treated with a photosensitizing agent having an absorption maximum between 400-900 nm to a wavelength absorbed by the photosensitizing agent so as to attenuate the APCs in the donor tissue but wherein the light is not cytotoxic to the APCs.