US3692893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hair spray containing a tetrapolymer comprising n-t-butyl acrylamide or -n-isopropyl acrylamide
Assignee: Wyeth Holdings LLC
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Filing: 1971-05-07
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Granted: 1972-09-19
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Expires: 1991-05-07
Abstract
Abstract An aerosol spray containing a tetrapolymer of (A) N-t-butyl acrylamide or N-isopropyl acrylamide, (B) acrylamide or methacrylamide, (C) N-vinyl pyrrolidone and (D) acrylic or methacrylic acid, is disclosed.
Inventors
- 👤 Lucille Elma Palmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:17
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/02; A61K8/04; A61K8/046; A61K8/18; A61K8/72; A61K8/81; A61K8/8141; A61K8/8152; A61K8/30; A61K8/33; A61K8/34; A61K8/8158; A61K8/817; A61K8/8176; A61K8/8182; A61Q; A61Q5/00; A61Q5/06; A61K2800/00; A61K2800/40; A61K2800/59; A61K2800/594; Y; Y10; Y10S; Y10S424/00; Y10S424/01; Y10S424/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
19 words
A hair spray according to claim 1 wherein said tetrapolymer comprises N-t-butyl acrylamide, acrylamide, N-vinyl pyrrolidone and acrylic acid.
Claim 2
Dependent Claim
19 words
A hair spray according to claim 1 wherein said tetrapolymer comprises N-t-butyl acrylamide, acrylamide, N-vinyl pyrrolidone and methacrylic acid.
Claim 3
Dependent Claim
19 words
A hair spray according to claim 1 wherein said tetrapolymer comprises N-isopropyl acrylamide, acrylamide, N-vinyl pyrrolidone and acrylic acid.
Claim 4
Dependent Claim
19 words
A hair spray according to claim 1 wherein said tetrapolymer comprises N-t-butyl acrylamide, methacrylamide, N-vinyl pyrrolidone and acrylic acid.
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) | 1975-09-19 | 1976-03-20 | 1976-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-19 | 1980-03-20 | 1980-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-19 | 1984-03-20 | 1984-09-19 | $7700.00 | Window Closed / Lapsed |