Bizarre Patents
Wearable Device For Feeding and Observing Birds and Other Flying Animals
A device for feeding and observing flying animals comprising a hat, a support mounted on the hat and extending outward from the hat, and a feeder mounted on the support.
PatentStorm News
Make the Most of PatentStorm
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest patents by subscribing to an RSS feed.
Got questions? Ask a Patent Expert!
Registered users: Manage your profile, comments and alerts.
US Patent 5474783 - Solubility parameter based drug delivery system and method for altering drug saturation concentration
US Patent Issued on December 12, 1995
Estimated Patent Expiration Date:
December 12, 2012Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
Estimated Patent Expiration Date:
December 12, 2012Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.AbstractThe method of adjusting the saturation concentration of a drug in a transdermal composition for application to the dermis, which comprises mixing polymers having differing solubility parameters, so as to modulate the delivery of the drug. This results in the ability to achieve a predetermined permeation rate of the drug into and through the dermis. In one embodiment, a dermal composition of the present invention comprises a drug, an acrylate polymer, and a polysiloxane. The dermal compositions can be produced by a variety of methods known in the preparation of drug-containing adhesive preparations, including the mixing of the polymers, drug, and additional ingredients in solution, followed by removal of the processing solvents. The method and composition of this invention permit selectable loading of the drug into the dermal formulation and adjustment of the delivery rate of the drug from the composition through the dermis, while maintaining acceptable shear, tack, and peel adhesive properties.Other References
| InventorsAssigneeApplicationNo. 722342 filed on 06/27/1991US Classes:424/448, Pressure sensitive adhesive means424/447, Bandages with incorporated medicaments424/449Transdermal or percutaneousField of Search424/448, Pressure sensitive adhesive means424/449, Transdermal or percutaneous424/447, Bandages with incorporated medicaments524/506With solid polymer derived from at least one Si-H or Si-C reactant wherein at least one of the reactants forming the solid polymer is saturated; or with SPFI or SICP derived from a Si-H or Si-C reactant wherein at least one of the necessary reactants is saturatedExaminersPrimary: Denkat, JyothsnaAttorney, Agent or FirmUS Patent References3469308, 4390520, Antiphlogistic analgesic adhesiveIssued on: 06/28/1983 Inventor: Nagai , et al.4690683, Transdermal varapamil delivery device Issued on: 09/01/1987 Inventor: Chien , et al.4693887, Microphase separated hydrogels for controlled release of bioactive materials Issued on: 09/15/1987 Inventor: Shah4814168, Transdermal multipolymer drug delivery system Issued on: 03/21/1989 Inventor: Sablotsky , et al.4845081, Aminomethyl derivatives of biologically active substances, and enhanced delivery thereof across topical membranes Issued on: 07/04/1989 Inventor: Sloan4883669, Transdermal absorption dosage unit for estradiol and other estrogenic steroids and process for administration Issued on: 11/28/1989 Inventor: Chien, et al.4906169, Transdermal estrogen/progestin dosage unit, system and process Issued on: 03/06/1990 Inventor: Chien, et al.4911916, Diffusion matrix for transdermal drug administration and transdermal drug delivery devices including same Issued on: 03/27/1990 Inventor: Cleary4931281, Laminar structure for administering a chemical at a controlled release rate Issued on: 06/05/1990 Inventor: Kim, et al.4987893, Conformable bandage and coating material Issued on: 01/29/1991 Inventor: Salamone, et al.4994267, Transdermal acrylic multipolymer drug delivery system Issued on: 02/19/1991 Inventor: Sablotsky5149538, Misuse-resistive transdermal opioid dosage form Issued on: 09/22/1992 Inventor: Granger, et al.5151271, Pressure-sensitively adhering composite medicinal preparation Issued on: 09/29/1992 Inventor: Otsuka, et al.5154922Compositions for transdermal delivery of estradiol Issued on: 10/13/1992 Inventor: Govil, et al. Foreign Patent References
International ClassA61F 013/02 |
