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US4717568A Expired / Lapsed US ⏱️ 0.0 years remaining

Laminar arrangement for increasing delivery of beneficial agent from dispenser

Assignee: Alza Corp
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Filing: 1986-08-11
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Granted: 1988-01-05
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Expires: 2006-08-11
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Abstract

Abstract A laminated arrangement useful for manufacturing a deliver device for delivering a beneficial agent formulation is disclosed. The laminated arrangement comprise first lamina means comprising a beneficial agent formulation in laminar arrangement with a second lamina means exhibiting a lower passage to the beneficial agent then the first lamina means.

Inventors

  • 👤 James B. Eckenhoff
  • 👤 Richard Cortese
  • 👤 Felix A. Landrau

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-23 15:41
CPC Classifications
A; A61; A61M; A61M31/00; A61M31/002; A61K; A61K9/00; A61K9/0002; A61K9/0004; Y; Y10; Y10T; Y10T428/00; Y10T428/249921; Y10T428/249994

Claims Analysis

Total Claims: 4
Claim 1
Independent Claim 171 words
A laminated arrangement useful for manufacturing a delivery device for delivering a beneficial agent formulation to an animal, wherein the laminated arrangement comprises: first lamina means for absorbing heat from the animal for forming a dispensable formulation, said first lamina means comprising a beneficial agent formulation that produces a beneficial effect when dispensed to an animal, which first lamina means is in laminar arrangement with a second lamina means, said second lamina having means for lessening unwanted migration of beneficial agent from the first lamina means, said second lamina means exhibiting a lower passage to the beneficial agent then the first lamina means there by lessening migration from the first lamina means into the second lamina means, and wherein when the laminated arrangement is in a delivery device in operation, which delivery device comprises means for producing an expandable force for assisting in operating the delivery device, the first lamina and the second lamina operate as a cooperating means for increasing the delivery of the beneficial agent from the delivery device.
Claim 2
Dependent Claim 171 words
A laminated arrangement useful for manufacturing a delivery device for delivering a beneficial agent formulation to an animal, wherein the laminated arrangement comprises: first lamina means for absorbing heat from the animal for forming a dispensable formulation, said first lamina means comprising a beneficial agent formulation that produces a beneficial effect when dispensed to an animal, which first lamina means is in laminar arrangement with a second lamina means, said second lamina having means for lessening unwanted migration of beneficial agent from the first lamina means, said second lamina means exhibiting a lower passage to the beneficial agent then the first lamina means there by lessening migration from the first lamina means into the second lamina means, and wherein when the laminated arrangement is in a delivery device in operation, which delivery device comprises means for producing an expandable force for assisting in operating the delivery device, the first lamina and the second lamina operate as a cooperating means for increasing the delivery of the beneficial agent from the delivery device.
Claim 3
Dependent Claim 153 words
A laminated arrangement useful for manufacturing a delivery device for delivering a beneficial agent formulation to a animal, wherein the laminated arrangement comprises: a first lamina means for absorbing fluid from the animal for increasing the size of the first lamina means 2 to 50 fold, thereby producing an expanding force that is applied against a beneficial agent formulation present in the delivery device for dispensing the formulation from the delivery device, and a second lamina means in laminar arrangement with the first lamina means, said second lamina means for directing the expanding force received from the first lamina means against a beneficial agent formulation present in the delivery device for aiding in the delivery of a beneficial agent formulation from the dispensing device, and which second lamina exhibits a decrease passage to the beneficial agent and acts with the first lamina for increasing the delivery of the beneficial agent from the dispenser.
Claim 4
Dependent Claim 153 words
A laminated arrangement useful for manufacturing a delivery device for delivering a beneficial agent formulation to a animal, wherein the laminated arrangement comprises: a first lamina means for absorbing fluid from the animal for increasing the size of the first lamina means 2 to 50 fold, thereby producing an expanding force that is applied against a beneficial agent formulation present in the delivery device for dispensing the formulation from the delivery device, and a second lamina means in laminar arrangement with the first lamina means, said second lamina means for directing the expanding force received from the first lamina means against a beneficial agent formulation present in the delivery device for aiding in the delivery of a beneficial agent formulation from the dispensing device, and which second lamina exhibits a decrease passage to the beneficial agent and acts with the first lamina for increasing the delivery of the beneficial agent from the dispenser.

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1991-01-04 1991-07-06 1992-01-05 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1995-01-04 1995-07-06 1996-01-05 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1999-01-04 1999-07-06 2000-01-05 $7700.00 Window Closed / Lapsed

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