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Last Updated: April 18, 2024

Details for Patent: 4,839,177

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Summary for Patent: 4,839,177

Title:	System for the controlled-rate release of active substances
Abstract:	A system for the controlled-rate release of active substances, consisting of: (a) a deposit-core comprising the active substance and having defined geometric form; (b) a support-platform applied to said deposit-core. Said deposit-core contains, mixed with the active substance, a polymeric material having a high degree of swelling on contact with water or aqueous liqids, a gellable polymeric material, said polymeric materials being replaceable by a single polymeric material having both swelling and gelling properties, and other adjuvants able to provide the mixture with suitable characteristics for its compression and for its intake of water.
Inventor(s):	Colombo; Paolo (Pavia, IT), La Manna; Aldo (Pavia, IT), Conte; Ubaldo (Busto Arsizio, IT)
Assignee:	Jagotec AG (Hergiswill, CH)
Application Number:	06/939,810
Patent Claim Types: see list of patent claims	Formulation; Process;

Drugs Protected by US Patent 4,839,177

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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: 4,839,177

Foriegn Application Priority Data
Foreign Country	Foreign Patent Number	Foreign Patent Date
Italy	23321 A/85	Dec 20, 1985

International Family Members for US Patent 4,839,177

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Country	Patent Number	Estimated Expiration	Supplementary Protection Certificate	SPC Country	SPC Expiration
Austria	58472	⤷ Try a Trial
Australia	594992	⤷ Try a Trial
Australia	6672586	⤷ Try a Trial
>Country	>Patent Number	>Estimated Expiration	>Supplementary Protection Certificate	>SPC Country	>SPC Expiration

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