US4492644A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slowly releasing perfume compositions
Assignee: Soda Aromatic Co Ltd
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Filing: 1982-04-15
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Granted: 1985-01-08
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Expires: 2002-04-15
Abstract
Abstract A slowly releasing perfume composition is obtained by mixing a granulated ethylene-vinyl acetate copolymer and a perfume which contains hydrocarbons and/or esters as an essential fragrant component, at a temperature in the range of about 10° C. to about 50° C.
Inventors
- 👤 Yuuichi Matsumoto
- 👤 Kiyomitsu Kawasaki
- 👤 Masato Ishitani
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:42
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/72; A61K8/81; A61K8/8135; A61K8/02; A61K8/0241; A61L; A61L9/00; A61L9/015; A61L9/04; A61L9/042; A61Q; A61Q13/00; A61K2800/00; A61K2800/40; A61K2800/56
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
116 words
A slowly releasing perfume composition prepared by mixing a granulated ethylene-vinyl acetate copolymer having a vinyl acetate content in the range of 19 to 40% by weight and a perfume, said perfume containing as an essential component at least one fragrant component selected from the group consisting of hydrocarbons and esters the total amount of said hydrocarbons and esters in said perfume being not less than about 30%, at a temperature in the range of about 10° C. to about 50° C. to thereby allow said perfume to be absorbed in said granulated copolymer and wherein the diameter of each granule of said granulated copolymer is in the range of about 1 to about 10 mm.
Claim 2
Dependent Claim
116 words
A slowly releasing perfume composition prepared by mixing a granulated ethylene-vinyl acetate copolymer having a vinyl acetate content in the range of 19 to 40% by weight and a perfume, said perfume containing as an essential component at least one fragrant component selected from the group consisting of hydrocarbons and esters the total amount of said hydrocarbons and esters in said perfume being not less than about 30%, at a temperature in the range of about 10° C. to about 50° C. to thereby allow said perfume to be absorbed in said granulated copolymer and wherein the diameter of each granule of said granulated copolymer is in the range of about 1 to about 10 mm.
Claim 3
Dependent Claim
18 words
The composition of claim 1 wherein said hydrocarbons are monoterpene hydrocarbons, sesquiterpene hydrocarbons, diterpene hydrocarbons and aromatic hydrocarbons.
Claim 4
Dependent Claim
22 words
The composition of claim 1 wherein said esters are aliphatic and aromatic carboxylic acid esters having not more than 20 carbon atoms.
Claim 5
Dependent Claim
36 words
The composition of claim 1 wherein said perfume is used in an equivalent amount or less based on the amount of said granulated copolymer and substantially all the amount thereof is absorbed in said granulated copolymer.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-01-08 | 1988-07-09 | 1989-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-01-08 | 1992-07-09 | 1993-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-01-08 | 1996-07-09 | 1997-01-08 | $7700.00 | Window Closed / Lapsed |