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. 02, 1993
Filed:
May. 21, 1992
Rodney C Baker, Hertsfordshire, GB;
Coopers Animal Health Limited, Hertfordshire, GB;
Abstract
A solid pharmaceutical composition for release of a biologically active substance into a desired aqueous environment, containing a core and an outer layer, said core comprising between 17 and 93% by weight of the biologically active substance, between 0.01 and 7% by weight of a water swellable polymer material and between 0 and 83% of one or more accessory ingredients, relative to the total weight of the core; and the outer layer comprising between 25 and 75% by weight of the biologically active substance, between 25 and 75% by weight of a material for enabling rapid dispersion of the outer layer into the aqueous environment and 0 to 50% by weight of one or more accessory ingredients, relative to the total weight of the outer layer. The composition is preferably formulated as a bolus for veterinary use.