Patent US4178264A successfully refreshed from Google Patents.
US4178264A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air treating gel composition
Assignee: Reckitt and Colman North America Inc
•
Filing: 1978-01-31
•
Granted: 1979-12-11
•
Expires: 1998-01-31
Abstract
Abstract An improved air treating gel of significantly enhanced stability, primarily thermal stability, comprising in an aqueous system a weight ratio of from about 0.3:1 to 5:1 carrageenan to stearate salt; a volatile active agent; a stearate solubility enhancer; and water.
Inventors
- 👤 Allan L. Streit
- 👤 Edward Sansanelli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 22:29
CPC Classifications
B; B01; B01J; B01J13/00; B01J13/0004; B01J13/0034; A; A61; A61L; A61L9/00; A61L9/015; A61L9/04; A61L9/048
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
87 words
A thermally stable gel composition comprising in an aqueous system from about 1.5-15%, by weight, of carrageenan and a stearate salt selected rom the group consisting of sodium, potassium and alkanolamine stearates, said carrageenan and stearate being present in a weight ratio of 0.3:1 to 5:1; from about 0.5-6.0%, by weight, of a volatile active agent; from about 1 to 20%, by weight, of a component for enhancing stearate solubility selected from the group consisting of glycols and C 2 -C 18 alcohols; and water to 100%.
Claim 2
Dependent Claim
87 words
A thermally stable gel composition comprising in an aqueous system from about 1.5-15%, by weight, of carrageenan and a stearate salt selected rom the group consisting of sodium, potassium and alkanolamine stearates, said carrageenan and stearate being present in a weight ratio of 0.3:1 to 5:1; from about 0.5-6.0%, by weight, of a volatile active agent; from about 1 to 20%, by weight, of a component for enhancing stearate solubility selected from the group consisting of glycols and C 2 -C 18 alcohols; and water to 100%.
Claim 3
Dependent Claim
18 words
A gel composition of claim 1, wherein the weight ratio of carrageenan to stearate is 1:1 to 3:1.
Claim 4
Dependent Claim
14 words
The gel composition of claim 1, wherein said stearate is sodium or potassium stearate.
Claim 5
Dependent Claim
47 words
The gel composition of claim 1, wherein said solubility component is selected from the group consisting of ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, propylene glycol, liquid polyethylene glycols, solid polyethylene glycols, ethylene glycol monomethyl ether, polyethylene glycol monomethyl ether, ethanol, butanol, hexanol and cetyl alcohol.
Claim 6
Dependent Claim
17 words
The gel composition of claim 4, wherein said solubility component is ethylene glycol, propylene glycol or ethanol.
Claim 7
Independent Claim
113 words
A method for dispensing a volatile active agent over an extended period of time comprising exposing to the atmosphere a gel composition comprising in an aqueous system from about 1.5-15%, by weight, of carrageenan and a stearate salt selected from the group consisting of sodium, potassium and alkanolamine stearates, said carrageenan and stearate being present in a weight ratio of 0.3:1 to 5:1; from about 0.5-6.0% by weight, of a volatile active agent; from about 1 to 20%, by weight, of a component for enhancing stearate solubility selected from the group consisting of glycols and C 2 -C 18 alcohols; and water to 100%, and allowing the volatiles in said gel to evaporate.
Claim 8
Independent Claim
113 words
A method for dispensing a volatile active agent over an extended period of time comprising exposing to the atmosphere a gel composition comprising in an aqueous system from about 1.5-15%, by weight, of carrageenan and a stearate salt selected from the group consisting of sodium, potassium and alkanolamine stearates, said carrageenan and stearate being present in a weight ratio of 0.3:1 to 5:1; from about 0.5-6.0% by weight, of a volatile active agent; from about 1 to 20%, by weight, of a component for enhancing stearate solubility selected from the group consisting of glycols and C 2 -C 18 alcohols; and water to 100%, and allowing the volatiles in said gel to evaporate.
Claim 9
Dependent Claim
17 words
The method of claim 6, wherein the weight ratio of carrageenan to stearate is 1:1 to 3:1.
References Cited (Backward Citations)
US2691615A
Cited
US2871526A
Cited
US2927055A
Cited
GB1241914A
Cited
FR2123824A5
Cited
US3767787A
Cited
US4056612A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-12-10 | 1983-06-11 | 1983-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-10 | 1987-06-11 | 1987-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-10 | 1991-06-11 | 1991-12-11 | $7700.00 | Window Closed / Lapsed |