Patent EP0348970A2 successfully refreshed from Google Patents.
EP0348970A2
Expired / Lapsed
EP
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Multi-laminate fragrance release device
Assignee: Dow Silicones Corp
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Filing: 1989-06-29
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Granted: —
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Expires: 2009-06-29
Abstract
Abstract A multi-layered multi-laminate sustained release device capable of releasing fragrances, colognes and perfumes, at a controlled rate for a prolonged period of time and having a first layer of a pressure sensitive adhesive release liner for providing a protective peel strip for the device, a second layer of a silicone pressure sensitive adhesive for adhering the device to a substrate to which it is applied including human skin, a third layer of a fragrance oil impregnated matrix of a silicone material selected from the group consisting of silicone elastomers, silicone elastomers having adhesive characteristics and elastomeric silicone pressure sensitive adhesives and a fourth layer of a permeable facestock backing member on the surface of the device for controlling the rate of release of the fragrance oil from the impregnated matrix.
Inventors
- 👤 Alfred Joseph Disapio
- 👤 William Richard Pfister
- 👤 Mary Ann Sheeran
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 18:38
CPC Classifications
A; A45; A45D; A45D40/00; A45D40/0087; A61; A61L; A61L9/00; A61L9/015; A61L9/04; A61L9/12; B; B32; B32B; B32B25/00; B32B25/20
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
122 words
A multi-layered multi-laminate sustained release device capable of releasing fragrances at a controlled rate for a prolonged period of time comprising a first layer of a pressure sensitive adhesive release liner for providing a protective peel strip for the device, a second layer of a silicone pressure sensitive adhesive for adhering the device to a substrate to which it is applied, a third layer of a fragrance impregnated matrix which is a silicone material selected from the group consisting of silicone elastomers, silicone elastomers having adhesive characteristics and elastomeric silicone pressure sensitive adhesives and a fourth layer of a permeable facestock backing member on the surface of the device for controlling the rate of release of the fragrance from the impregnated matrix.
Claim 2
Dependent Claim
122 words
A multi-layered multi-laminate sustained release device capable of releasing fragrances at a controlled rate for a prolonged period of time comprising a first layer of a pressure sensitive adhesive release liner for providing a protective peel strip for the device, a second layer of a silicone pressure sensitive adhesive for adhering the device to a substrate to which it is applied, a third layer of a fragrance impregnated matrix which is a silicone material selected from the group consisting of silicone elastomers, silicone elastomers having adhesive characteristics and elastomeric silicone pressure sensitive adhesives and a fourth layer of a permeable facestock backing member on the surface of the device for controlling the rate of release of the fragrance from the impregnated matrix.
Claim 3
Dependent Claim
36 words
The device in claim 1 wherein the matrix also includes a release rate modifying excipient for increasing the solubility of the fragrance in the matrix resulting in an increase in the release capability of the device.
Claim 4
Dependent Claim
46 words
The device in claim 1 wherein the fragrance impregnated matrix constitutes at least three separate and distinct layers, each of the three layers of the fragrance impregnated matrix including a fragrance differing from the fragrance in each of the other of the layers of the matrix.
Claim 5
Dependent Claim
150 words
A multi-layered multi-laminate sustained release device capable of releasing fragrances at a controlled rate for a prolonged period of time comprising a first layer of a pressure and sensitive adhesive release liner for providing a protective peel strip for the device, a second layer of a silicone pressure sensitive adhesive for adhering the device to a substrate to which it is applied, a third layer of a fragrance impregnated matrix which is a silicone material selected from the group consisting of silicone elastomers, silicone elastomers having adhesive characteristics and elastomeric silicone pressure sensitive adhesives, a fourth layer of a permeable facestock backing member on the surface of the device for controlling the rate of release of the fragrance from the impregnated matrix, the device including therein at least one impermeable backing member for preventing the fragrance of the impregnated matrix from interacting with the substrate to which it is applied.
Claim 6
Dependent Claim
150 words
A multi-layered multi-laminate sustained release device capable of releasing fragrances at a controlled rate for a prolonged period of time comprising a first layer of a pressure and sensitive adhesive release liner for providing a protective peel strip for the device, a second layer of a silicone pressure sensitive adhesive for adhering the device to a substrate to which it is applied, a third layer of a fragrance impregnated matrix which is a silicone material selected from the group consisting of silicone elastomers, silicone elastomers having adhesive characteristics and elastomeric silicone pressure sensitive adhesives, a fourth layer of a permeable facestock backing member on the surface of the device for controlling the rate of release of the fragrance from the impregnated matrix, the device including therein at least one impermeable backing member for preventing the fragrance of the impregnated matrix from interacting with the substrate to which it is applied.
Claim 7
Dependent Claim
36 words
The device in claim 4 wherein the matrix also includes a release rate modifying excipient for increasing the solubility of the fragrance in the matrix resulting in an increase in the release capability of the device.
Claim 8
Dependent Claim
46 words
The device in claim 4 wherein the fragrance impregnated matrix constitutes at least three separate and distinct layers, each of the three layers of the fragrance impregnated matrix including a fragrance differing from the fragrance in one of the other of the layers of the matrix.
Claim 9
Dependent Claim
131 words
A multi-layered multi-laminate sustained release device capable of releasing fragrances at a controlled rate for a prolonged period of time comprising a first layer of a pressure and sensitive adhesive release liner for providing a protective peel strip for the device, a second layer of a silicone pressure sensitive adhesive for adhering the device to a substrate to which it is applied, a third layer of a fragrance impregnated matrix which is a silicone material selected from the group consisting of tin catalyzed room temperature condensation cured liquid silicone rubbers, elevated temperature addition cured liquid silicone rubbers and silicone pressure sensitive adhesives and a fourth layer of a permeable facestock backing member on the surface of the device for controlling the rate of release of the fragrance from the impregnated matrix.
Claim 10
Dependent Claim
131 words
A multi-layered multi-laminate sustained release device capable of releasing fragrances at a controlled rate for a prolonged period of time comprising a first layer of a pressure and sensitive adhesive release liner for providing a protective peel strip for the device, a second layer of a silicone pressure sensitive adhesive for adhering the device to a substrate to which it is applied, a third layer of a fragrance impregnated matrix which is a silicone material selected from the group consisting of tin catalyzed room temperature condensation cured liquid silicone rubbers, elevated temperature addition cured liquid silicone rubbers and silicone pressure sensitive adhesives and a fourth layer of a permeable facestock backing member on the surface of the device for controlling the rate of release of the fragrance from the impregnated matrix.
Claim 11
Dependent Claim
36 words
The device in claim 7 wherein the matrix also includes a release rate modifying excipient for increasing the solubility of the fragrance in the matrix resulting in an increase in the release capability of the device.
Claim 12
Dependent Claim
47 words
The device in claim 7 wherein the fragrance impregnated matrix constitutes at least three separate and distinct layers, each of the three layers of the fragrance impregnated matrix including a fragrance differing from the fragrance in each one of the other of the layers of the matrix.
References Cited (Backward Citations)
No citation records indexed.
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