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Serving hundreds of leading biopharmaceutical companies globally:

Johnson and Johnson
UBS
Dow
Farmers Insurance
Mallinckrodt
Queensland Health
Citi
Chubb
Express Scripts

Generated: June 24, 2018

DrugPatentWatch Database Preview

Details for Patent: 4,189,469

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Summary for Patent: 4,189,469
Title: Pharmaceutical compositions
Abstract:A pharmaceutical composition for oral administration in dosage unit form which comprises at least one xanthine derivative selected from the group consisting of (a) (.omega.-1(-hydroxyalkyl-dialkylxanthines wherein the (.omega.-1)-hydroxyalkyl group contains 5 or 6 carbon atoms and is in the 1- or 7-position, the alkyl group in the other of the 1- and 7-position contains from 1 to 12 carbon atoms and the alkyl group in the 3-position contains from 1 to 4 carbon atoms, (b) (.omega.-1)-oxoalkyl-dimethylxanthines wherein the (.omega.-1)-oxoalkyl group contains 5 or 6 carbon atoms and is in the 1- or 7-position, (c) dimethylxanthine derivatives having an additional alkyl group containing from 4 to 12 carbon atoms in the 1- or 7-position, and (d) dimethylxanthine derivatives having an additional benzyl group in the 1- or 7-position and a saliva forming agent, each dosage unit containing at least 300 mg of xanthine derivative, and the weight ratio of xanthine derivative to saliva forming agent being in the range from 1:2 to 10:1 and a method for the preparation of said composition.
Inventor(s): Gleixner; Klaus (Taunusstein-Wehen, DE), Muller; Roland (Wiesbaden, DE), Lehrach; Franz (Wiesbaden, DE)
Assignee: Hoechst Aktiengesellschaft (Frankfurt, DE)
Application Number:05/683,795
Patent Claim Types:
see list of patent claims
Composition; Dosage form; Process;

Drugs Protected by US Patent 4,189,469

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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Foreign Priority and PCT Information for Patent: 4,189,469

Foriegn Application Priority Data
Foreign Country Foreign Patent Number Foreign Patent Date
Germany2520978May 10, 1975

International Family Members for US Patent 4,189,469

Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration
Australia 1376576 ➤ Try a Free Trial
Australia 502644 ➤ Try a Free Trial
Belgium 841617 ➤ Try a Free Trial
Cyprus 1153 ➤ Try a Free Trial
Country Document Number Estimated Expiration Supplementary Protection Certificate SPC Country SPC Expiration

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Serving hundreds of leading biopharmaceutical companies globally:

Medtronic
AstraZeneca
QuintilesIMS
Daiichi Sankyo
McKinsey
Moodys
McKesson
Farmers Insurance
Express Scripts

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