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Serving leading biopharmaceutical companies globally:

Deloitte
US Department of Justice
Julphar
Citi
Dow
Fuji
US Army
Mallinckrodt
Covington
AstraZeneca

Generated: January 17, 2018

DrugPatentWatch Database Preview

Details for Patent: 4,820,522

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Summary for Patent: 4,820,522
Title: Oral sustained release acetaminophen formulation and process
Abstract:An acetaminophen-sustained release tablet or tablet layer is formed by making a wet granulation, using Povidone (PVP) in water or alcohol-water as the granulating fluid which is mixed with acetaminophen, hydroxyethyl cellulose, a wicking agent e.g. microcrystalline cellulose, then drying and milling the granulation and blending with dry powdered erosion promoter, e.g. pregelatinized starch, wicking agent, lubricant e.g. magnesium stearate and glidant e.g. silicon dioxide, and compressing the resultant granulation, which upon administration results in a slow release of the acetaminophen.
Inventor(s): Radebaugh; Galen W. (Maple Glen, PA), Murtha; John L. (Holland, PA), Glinecke; Robert (Glenside, PA)
Assignee: McNeilab, Inc. (Spring House, PA)
Application Number:07/078,138
Patent Claim Types:
see list of patent claims
Compound; Dosage form; Process; Composition; Formulation;

Drugs Protected by US Patent 4,820,522

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

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International Patents Family Members for US Patent 4,820,522

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
European Patent Office 0305051 ➤ Subscribe
Spain 2054813 ➤ Subscribe
Greece 880100491 ➤ Subscribe
Greece 1000254 ➤ Subscribe
Hong Kong 87893 ➤ Subscribe
Ireland 882286 ➤ Subscribe
Ireland 62831 ➤ Subscribe
India 166560 ➤ Subscribe
Japan S6440424 ➤ Subscribe
Germany 3880762 ➤ Subscribe
Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration

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Serving leading biopharmaceutical companies globally:

Federal Trade Commission
Argus Health
Teva
Cerilliant
Dow
Novartis
Johnson and Johnson
Fish and Richardson
Boehringer Ingelheim

Drugs may be covered by multiple patents or regulatory protections. All trademarks and applicant names are the property of their respective owners or licensors. Although great care is taken in the proper and correct provision of this service, thinkBiotech LLC does not accept any responsibility for possible consequences of errors or omissions in the provided data. The data presented herein is for information purposes only. There is no warranty that the data contained herein is error free. thinkBiotech performs no independent verifification of facts as provided by public sources nor are attempts made to provide legal or investing advice. Any reliance on data provided herein is done solely at the discretion of the user. Users of this service are advised to seek professional advice and independent confirmation before considering acting on any of the provided information. thinkBiotech LLC reserves the right to amend, extend or withdraw any part or all of the offered service without notice.

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