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|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)|
Patent Claim Types:|
see list of patent claims
|Foriegn Application Priority Data|
|Foreign Country||Foreign Patent Number||Foreign Patent Date|
|Italy||23321 A/85||Dec 20, 1985|
|Country||Document Number||Estimated Expiration||Supplementary Protection Certificate||SPC Country||SPC Expiration|
|Canada||1298479||<disabled in preview>|
|European Patent Office||0226884||<disabled in preview>|
|Germany||3675748||<disabled in preview>|
| This preview shows a limited data set|
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The estimated expiration dates shown above are derived by simply adding 20 years to the priority date.
Due to the complexity of determining patent expirations even in a single country, compounded by the diversity of global patent laws, it is advisable to have patent counsel verify freedom to operate.
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