US4128507A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Perfumed gels of hydroxypropyl cellulose
Assignee: POLAK'S FRUTAL WORKS Inc
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Filing: 1977-02-28
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Granted: 1978-12-05
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Expires: 1997-02-28
Abstract
Abstract Gels are prepared utilizing hydroxypropyl cellulose as the solid matrix phase and a mixture of a linear polyol, a perfume oil and optionally a hydroxypropyl cellulose solvent as the liquid phase.
Inventors
- 👤 Bernard M. Mitzner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:20
CPC Classifications
A; A61; A61L; A61L9/00; A61L9/015; A61L9/04; A61L9/042; A61L9/048
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
74 words
A perfumed gel suitable for use as a room freshener consisting essentially of about 3 to 10% by weight of hydroxypropyl cellulose dissolved in about 90 to 97% of a solution consisting essentially of about 35 to 90% of a linear polyol plasticizer for hydroxypropyl cellulose, 10 to 55% perfume oil and 0 to 10% of a hydroxypropyl cellulose solvent selected from the class consisting of water and 1 to 3 carbon aliphatic ahcohols.
Claim 2
Dependent Claim
74 words
A perfumed gel suitable for use as a room freshener consisting essentially of about 3 to 10% by weight of hydroxypropyl cellulose dissolved in about 90 to 97% of a solution consisting essentially of about 35 to 90% of a linear polyol plasticizer for hydroxypropyl cellulose, 10 to 55% perfume oil and 0 to 10% of a hydroxypropyl cellulose solvent selected from the class consisting of water and 1 to 3 carbon aliphatic ahcohols.
Claim 3
Dependent Claim
13 words
A gel according to claim 1 wherein the linear polyol is propylene glycol.
Claim 4
Dependent Claim
11 words
A gel according to claim 1 where the solvent is methanol.
Claim 5
Dependent Claim
11 words
A gel according to claim 2 where the solvent is methanol.
References Cited (Backward Citations)
US3609102A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-12-04 | 1982-06-05 | 1982-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-12-04 | 1986-06-05 | 1986-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-12-04 | 1990-06-05 | 1990-12-05 | $7700.00 | Window Closed / Lapsed |