Controlled release dosage form comprising different cellulose ethers

United States of America Patent

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Oct 3, 1989
Grant Date
N/A
app pub date
Apr 17, 1987
filing date
Apr 6, 1987

priority date (Note)
Expired

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Abstract

A dosage form is disclosed comprising a low number average molecular weight hydroxypropylmethylcellulose, a high number average molecular weight hydroxypropylmethylcellulose, and a beneficial drug.

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Patent Owner(s)

Patent Owner	Address
ALZA CORPORATION A CORP OF CA	PALO ALTO CA 94303-0802

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
Bhatti, Gurdish K	Fremont, CA	16	978
Edgren, David E	El Granada, CA	58	3111
Magruder, Judy A	Palo Alto, CA	55	4381

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Controlled release dosage form comprising different cellulose ethers

Number of patents in Portfolio can not be more than 2000

United States of America Patent

07039405

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PATENT NO	4871548
SERIAL NO	07039405
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07039405

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