Device for controlled release of vapors and scents

• US 5,071,704 A
• Filed: 06/13/1990
• Issued: 12/10/1991
• Est. Priority Date: 06/13/1990
• Status: Expired due to Fees

• Current Assignee: Fariba Fischel-Ghodsian
• Original Assignee: Fariba Fischel-Ghodsian
• Inventors: Fischel-Ghodsian, Fariba
• Primary Examiner(s): Lesmes, George F.
• Assistant Examiner(s): ZIRKER, DANIEL R
• Application Number:
  US07/537,438
• Time in Patent Office: 545 Days
• Field of Search: 424/448, 424/449, 428/905, 428/343, 428/354, 523/102
• US Class Current: 428/354
• CPC Class Codes: A01M 1/2055 Holders or dispensers for solid, gelified or impregnated insecticide, e.g. volatile blocks or impregnated pads
• CPC Class Codes: A01M 29/12 using odoriferous substances, e.g. aromas, pheromones or chemical agents
• CPC Class Codes: A01N 25/18 Vapour or smoke emitting compositions with delayed or sustained release
• CPC Class Codes: A44C 15/002 Jewellery dispersing perfume or the like
• CPC Class Codes: A61K 9/007 Pulmonary tract; Aromatherapy
• CPC Class Codes: A61K 9/703 characterised by shape or structure; Details concerning release liner or backing; Refillable patches; User-activated patches
• CPC Class Codes: A61K 9/7084 Transdermal patches having a drug layer or reservoir, and one or more separate drug-free skin-adhesive layers, e.g. between drug reservoir and skin, or surrounding the drug reservoir; Liquid-filled reservoir patches
• CPC Class Codes: A61L 9/12 Apparatus, e.g. holders, therefor
• CPC Class Codes: Y10S 261/88 Aroma dispensers
• CPC Class Codes: Y10S 428/905 Odor releasing material
• CPC Class Codes: Y10T 428/2848 Three or more layers

Abstract

A controlled release device useful for the release of vapors or liquids is described. The device is a multilayered laminate consisting of a reservoir layer which incorporates an active compound, such as a perfume or fragrance or insect repellant, an impermeable membrane layer adjacent the reservoir layer and a diffusion rate limiting membrane layer adjacent the reservoir layer. The device preferably includes an adhesive layer for adhering the device to skin or a surface and an ornamental decorative layer.

Claims

1. A device useful for the controlled release of a perfume or fragrance, said device forming a laminate comprising:

a decorative layer consisting of an artistic design formed on a 50 um polyester film;

a diffusion rate limiting membrane layer adjacent said decorative layer, said diffusion rate limiting membrane consisting of a 40 um thick ethylene vinyl-acetate film;

a reservoir layer adjacent said diffusion rate limiting membrane layer, said reservoir layer comprising a gelled mixture of perfume and hydroxypropyl cellulose;

a vapor and liquid impermeable backing layer adjacent said reservoir layer, said impermeable backing layer consisting of a 50 um thick medium density polyethylene/aluminized polyester/ethylene vinylacetate;

a pressure sensitive contact adhesive layer adjacent said vapor and liquid impermeable backing layer, said adhesive layer consisting of a medical grade silicone adhesive.

2. The device of claim 1 further comprising one or more clips extending from adjacent said decorative layer to adjacent said adhesive layer.

3. The device of claim 1 further comprising laminate layer edges secured by a sealing technique selected from the group consisting of solvent sealing and heat sealing.