Patent US3964482A successfully refreshed from Google Patents.
US3964482A
Expired / Lapsed
US
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Drug delivery device
Assignee: Alza Corp
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Filing: 1971-05-17
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Granted: 1976-06-22
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Expires: 1991-05-17
Abstract
Abstract A drug delivery device for percutaneously administering a drug comprising a plurality of projections, a drug reservoir containing a drug, and where the projections extend from the reservoir and are adapted for penetrating the stratum corneum for percutaneously administering a drug from the reservoir to produce a local or systemic physiological or pharmacological effect.
Inventors
- 👤 Martin S. Gerstel
- 👤 Virgil A. Place
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:37
CPC Classifications
A; A61; A61K; A61K9/00; A61K9/0012; A61K9/0019; A61K9/0021; A61M; A61M37/00; A61M37/0015; A61M2037/0023
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
68 words
A drug delivery device for percutaneously administering a drug comprising, a. a plurality of puncturing projections, formed of a drug release rate controlling material permeable to passage of a drug by diffusion, and b. a reservoir communicating with said projections containing the drug and whereby drug from the reservoir enters the projections and by diffusion through the projections is percutaneously administered through the stratum corneum of the epidermis.
Claim 2
Dependent Claim
68 words
A drug delivery device for percutaneously administering a drug comprising, a. a plurality of puncturing projections, formed of a drug release rate controlling material permeable to passage of a drug by diffusion, and b. a reservoir communicating with said projections containing the drug and whereby drug from the reservoir enters the projections and by diffusion through the projections is percutaneously administered through the stratum corneum of the epidermis.
References Cited (Backward Citations)
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US3598122B1
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-22 | 1979-12-22 | 1980-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-22 | 1983-12-22 | 1984-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-22 | 1987-12-22 | 1988-06-22 | $7700.00 | Window Closed / Lapsed |