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Last Updated: April 26, 2024

Details for Patent: 4,559,222

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Summary for Patent: 4,559,222

Title:	Matrix composition for transdermal therapeutic system
Abstract:	Mineral oil (MO) polyisobutylene (PIB), colloidal silicon dioxide (CSD) mixtures suitable for use as drug containing matrices in transdermal delivery systems are disclosed. Preferred systems for dispensing moderately mineral oil soluble drugs contain at least about 6% CSD, have a MO/PIB of at least 1.0 and a viscosity of at least 1.5.times.10.sup.7 poises. Preferred systems for dispensing clonidine have a clonidine permeability of at least 1.0.times.10.sup.-4 .mu.g/cm sec and a MO/PIB of at least 1.2.
Inventor(s):	Enscore; David J. (Mountain View, CA), Gale; Robert M. (Mountain View, CA)
Assignee:	ALZA Corporation (Palo Alto, CA)
Application Number:	06/491,490
Patent Claim Types: see list of patent claims	Composition; Delivery;

Drugs Protected by US Patent 4,559,222

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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

International Family Members for US Patent 4,559,222

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Country	Patent Number	Estimated Expiration	Supplementary Protection Certificate	SPC Country	SPC Expiration
Australia	2717184	⤷ Try a Trial
Australia	558304	⤷ Try a Trial
Belgium	899444	⤷ Try a Trial
Canada	1217139	⤷ Try a Trial
Switzerland	666190	⤷ Try a Trial
Germany	3416248	⤷ Try a Trial
Spain	532228	⤷ Try a Trial
>Country	>Patent Number	>Estimated Expiration	>Supplementary Protection Certificate	>SPC Country	>SPC Expiration

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