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Patent US4457912A successfully refreshed from Google Patents.
US4457912A
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US
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Electric razor preshave composition
Assignee: Individual
•
Filing: 1982-08-24
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Granted: 1984-07-03
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Expires: 2002-08-24
Abstract
Abstract An electric razor preshave composition containing an effective amount of a cationic polymer. The cationic polymer is selected so that, when the composition is applied to hair to be shaven, the cationic polymer clings to each individual hair, and when the composition subsequently dries on the hair, the cationic polymer forms a relatively stiff but pliable coating on each hair. The dry cationic polymer coating makes each hair stay relatively erect during shaving and, in addition, neutralizes static charges on the metal blades of an electric razor so that the individual hairs are not repelled by the razor blades as they are being cut.
Inventors
- 👤 Nicholas F. Scodari
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:43
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/72; A61K8/81; A61K8/817; A61K8/8182; A61K8/73; A61K8/731; A61K8/8141; A61K8/8152; A61K8/8158; A61Q; A61Q9/00; A61Q9/02; A61K2800/00; A61K2800/40; A61K2800/54; A61K2800/542; A61K2800/5426
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
86 words
In a method for shaving hair with an electric razor after applying a preshave composition to the hair, the improvement wherein the preshave composition, which is applied, comprises: a lower alkyl alcohol as a vehicle; and an effective amount of a quaternary ammonium cationic polymer which can cling to each individual hair to be shaven when the preshave composition is applied to the hair and which can form a relatively stiff but pliable coating on each hair when the preshave composition subsequently dries on each hair.
Claim 2
Dependent Claim
86 words
In a method for shaving hair with an electric razor after applying a preshave composition to the hair, the improvement wherein the preshave composition, which is applied, comprises: a lower alkyl alcohol as a vehicle; and an effective amount of a quaternary ammonium cationic polymer which can cling to each individual hair to be shaven when the preshave composition is applied to the hair and which can form a relatively stiff but pliable coating on each hair when the preshave composition subsequently dries on each hair.
Claim 3
Dependent Claim
20 words
The method of claim 1 wherein the preshave composition comprises about 0.1 to 2.0 weight percent of the cationic polymer.
Claim 4
Dependent Claim
17 words
The method of claim 1 wherein the lower alkyl alcohol vehicle is ethyl alcohol or isopropyl alcohol.
Claim 5
Dependent Claim
22 words
The method of claim 3 wherein the preshave composition comprises about 70 to 95 weight percent of the lower alkyl alcohol vehicle.
Claim 6
Dependent Claim
19 words
The method of claim 4 wherein the preshave composition further comprises about 5 to 30 weight percent of water.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-07-03 | 1988-01-02 | 1988-07-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-03 | 1992-01-02 | 1992-07-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-03 | 1996-01-02 | 1996-07-03 | $7700.00 | Window Closed / Lapsed |