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:
Jul. 07, 1987
Filed:
Feb. 13, 1986
Applicant:
Inventors:
Cyril F Drake, Harlow, GB;
John R Brocklehurst, Bishop's Stortford, GB;
Assignee:
STC, plc, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
A61K / ; A01N / ;
U.S. Cl.
CPC ...
424451 ; 501 11 ; 514770 ;
Abstract
A therapeutic material is contained in a water soluble glass having a dissolution rate that is distinctly pH sensitive, the ratio of dissolution rates between pH 2 and pH 6 being greater than 60 to 1. The glass incorporates phosphorus pentoxide as the glass former and an alkali metal oxide and one or more alkaline earth metal oxides as glass modifiers.