Details for Patent: 4,189,469

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Summary for Patent: 4,189,469

Patent landscape, scope, and claims:

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;
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Drugs Protected by US Patent 4,189,469

Glossary

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

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

Foriegn Application Priority Data
Foreign Country	Foreign Patent Number	Foreign Patent Date
Germany	2520978	May 10, 1975

International Family Members for US Patent 4,189,469

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Country	Patent Number	Estimated Expiration	Supplementary Protection Certificate	SPC Country	SPC Expiration
Australia	1376576	⤷ Subscribe
Australia	502644	⤷ Subscribe
Belgium	841617	⤷ Subscribe
Cyprus	1153	⤷ Subscribe
>Country	>Patent Number	>Estimated Expiration	>Supplementary Protection Certificate	>SPC Country	>SPC Expiration

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