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:
Nov. 21, 1989
Filed:
Nov. 12, 1986
Healux, Inc., Sunnyvale, CA (US);
Abstract
Carboxyhydroxyporphin compounds such as hematoporphyrin exhibit instability upon warming. However, if this warming is extended and carried out in solution in the presence of a buffer so as to constitute a moderate temperature heat-treatment, a new composition of matter results which contains as much at 95% or more of an ester-linked oligomeric porphin-based material which is exceedingly storage-stable. This composition has superior activity as a photoimaging and photodynamic therapy agent. This process and the products it produces are disclosed. The oligomer products so formed can be formulated into pharmaceutical compositions for use in neoplastic tissue photoimaging and in photodynamic therapy of neoplastic tissues.