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:
Aug. 01, 1989
Filed:
Jun. 09, 1987
Applicant:
Inventor:
Mark D Allen, Lakewood, CO (US);
Assignee:
M.D.R. Group, Inc., Denver, CO (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K / ;
U.S. Cl.
CPC ...
514 57 ; 351162 ; 351163 ;
Abstract
This invention relates to a UV-blocked viscoelastic vitreous substitute for use in ophthalmic surgery comprising a hydroxy alkyl-substituted cellulose modified with a UV-absorbent molecule covalently bonded thereto having the type formula: ##STR1## where R.sup.1 is selected from the group consisting of H and OH; R.sup.2 is selected from the group consisting of H, OH or OR where R is any alkyl group; and, R.sup.3 is selected from the group consisting of H, SO.sub.3, OSO.sub.2 X where X is a leaving group.