Details for Patent: 4,389,393

Summary for Patent: 4,389,393

Title:	Sustained release therapeutic compositions based on high molecular weight hydroxypropylmethylcellulose
Abstract:	A carrier base material combined with a therapeutically active medicament and shaped and compressed to a solid unit dosage form having a regular and prolonged release pattern upon administration, the carrier base material being one or more hydroxypropylmethylcelluloses or a mixture of one or more hydroxypropylmethylcelluloses and up to 30% by weight of the mixture of methylcellulose, sodium carboxymethylcellulose and/or other cellulose ether, and wherein at least one of the hydroxypropylmethylcelluloses has a methoxy content of 16-24 weight-%, a hydroxypropoxyl content of 4-32 weight-% and a number average molecular weight of at least 50,000 and wherein the carrier base material constitutes less than about one third of the weight of the solid unit dosage form.
Inventor(s):	Schor; Joseph M. (Locust Valley, NY), Nigalaye; Ashok (Jackson Heights, NY), Gaylord; Norman G. (New Providence, NJ)
Assignee:	Forest Laboratories, Inc. (New York, NY)
Application Number:	06/362,104
Patent Claim Types: see list of patent claims	Composition; Compound; Dosage form; Use;

Drugs Protected by US Patent 4,389,393

Applicant	Tradename	Generic Name	Dosage	NDA	Approval Date	TE	Type	RLD	RS	Patent No.	Patent Expiration	Product	Substance	Delist Req.	Patented / Exclusive Use	Submissiondate

International Family Members for US Patent 4,389,393

Country	Patent Number	Estimated Expiration	Supplementary Protection Certificate	SPC Country	SPC Expiration
Argentina	230569
Australia	5676186
Australia	583616
Belgium	896136