Sustained release pharmaceutical compositions in oral dosage form

United States of America Patent

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Apr 24, 1990
Issued Date
N/A
app pub date
Oct 4, 1989
filing date
Jul 9, 1986

priority date (Note)
Expired

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Abstract

Oral dosage forms for neutral, zwitterions or slats of acidic or basic drugs with approximate zero order release kinetics comprise a core matrix of the drug, and a gelling polymer, the matrix being coated with a water permeable but insoluble polymer.

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Patent Owner(s)

Patent Owner	Address
MERCK SHARP & DOHME LTD	HODDESDON HERTFORDSHIRE EN11 9BU

International Classification(s)

A61K:PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOS....

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[Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Lovegrove, Claire J	Ware, GB2	1	18
Phillips, Anthony J	Little Hadham, GB2	9	179
Rawlins, David A	Tewin, GB2	3	39
Tainsh, David A	Buntingford, GB2	3	73

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Sustained release pharmaceutical compositions in oral dosage form

Number of patents in Portfolio can not be more than 2000

United States of America Patent

07418821

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PATENT NO	4919938
SERIAL NO	07418821
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07418821

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