US4178373A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coal tar gel composition
Assignee: William H Rorer Inc
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Filing: 1978-08-21
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Granted: 1979-12-11
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Expires: 1998-08-21
Abstract
Abstract Compositions effective for topically treating skin conditions, especially psoriasis and eczema which contains as an essential ingredient coal tar in a gel base.
Inventors
- 👤 Robert W. Klein
- 👤 Mary E. Foxx
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 03:20
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/02; A61K8/04; A61K8/042; A61K31/00; A61K31/60; A61K47/00; A61K47/02; A61K47/06; A61K47/08; A61K47/14; A61K9/00; A61K9/0012; A61K9/0014; A61Q; A61Q19/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
108 words
In a coal tar gel composition for topically treating eczema or psoriasis containing a gelling agent and from about 0.5 to about 20% by weight based on said composition of coal tar, the improvement which comprises including the combination of from about 2 to about 10% by weight based on said composition of a fatty acid derivative of sarcosine, said fatty acid having from 6 to 16 carbons, and from about 25 to about 75% by weight based on said composition of a glyceryl ester of a fatty acid having 6 to 22 carbon atoms; said glyceryl ester having a melting point of about -20° to +80° C.
Claim 2
Dependent Claim
108 words
In a coal tar gel composition for topically treating eczema or psoriasis containing a gelling agent and from about 0.5 to about 20% by weight based on said composition of coal tar, the improvement which comprises including the combination of from about 2 to about 10% by weight based on said composition of a fatty acid derivative of sarcosine, said fatty acid having from 6 to 16 carbons, and from about 25 to about 75% by weight based on said composition of a glyceryl ester of a fatty acid having 6 to 22 carbon atoms; said glyceryl ester having a melting point of about -20° to +80° C.
Claim 3
Dependent Claim
20 words
The composition of claim 1 including a compound selected from the group consisting of resorcinol, salicylic acid and retenoic acid.
Claim 4
Dependent Claim
20 words
The composition of claim 1 wherein said glyceryl ester is the triglyceride of a mixture of caprylic and capric acids.
Claim 5
Dependent Claim
24 words
The composition of claim 1 wherein said fatty acid sarcosine is selected from the group consisting of cocoyl sarcosine, N-lauroyl sarcosine and N-myristoyl sarcosine.
Claim 6
Dependent Claim
15 words
The composition of claim 1 wherein said gelling agent is stearalkonium hectorite and propylene carbonate.
Claim 7
Dependent Claim
43 words
The composition of claim 1 which comprises from 2.0 to about 10% of coal tar, from 2.5 to about 4% cocoyl sarcosine, from 25 to about 75% of the triglyceride of a mixture of caprylic and capric acids, stearalkonium hectorite and propylene carbonate.
Claim 8
Dependent Claim
22 words
A method for treating eczema or psoriasis in humans which comprise topically administering an effective amount of the composition of claim 1.
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) | 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 |