Details for Patent: 5,643,607
Summary for Patent: 5,643,607
| Title: | Prolonged release microcapsules |
| Abstract: | This invention provides a microcapsule designed for zero order release of a physiologically active polypeptide over a period of at least two months, which is produced by preparing a water-in-oil emulsion comprising an inner aqueous layer containing about 20 to 70% (w/w) of said polypeptide and an oil layer containing a copolymer or homopolymer having a weight-average molecular weight of 7,000 to 30,000, wherein the composition ratio of lactic acid/glycolic acid in the copolymer or homopolymer is 80/10 to 100/0, and then subjecting said water-in oil emulsion to microencapsulation. |
| Inventor(s): | Hiroaki Okada, Yayoi Inoue, Yasuaki Ogawa |
| Assignee: | Takeda Pharmaceutical Co Ltd |
| Application Number: | US08/458,679 |
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Patent Claim Types: see list of patent claims | Compound; Process; Dosage form; |
Drugs Protected by US Patent 5,643,607
| 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: 5,643,607
| Foriegn Application Priority Data | ||
| Foreign Country | Foreign Patent Number | Foreign Patent Date |
| Japan | 2-033133 | Feb 13, 1990 |
International Family Members for US Patent 5,643,607
| Country | Patent Number | Estimated Expiration | Supplementary Protection Certificate | SPC Country | SPC Expiration |
|---|---|---|---|---|---|
| Austria | 123413 | ⤷ Start Trial | |||
| Australia | 645108 | ⤷ Start Trial | |||
| Australia | 8179491 | ⤷ Start Trial | |||
| Brazil | 9103553 | ⤷ Start Trial | |||
| Canada | 2036089 | ⤷ Start Trial | |||
| >Country | >Patent Number | >Estimated Expiration | >Supplementary Protection Certificate | >SPC Country | >SPC Expiration |
