Patent US2546657A successfully refreshed from Google Patents.
US2948656A
Expired / Lapsed
US
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Hair setting composition containing a ring substituted n-vinyl-2-oxazolidinone polymer
Assignee: Dow Chemical Co
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Filing: 1958-01-28
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Granted: 1960-08-09
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Expires: 1978-01-28
Abstract
No abstract record available.
Inventors
- 👤 William F Tousignant
- 👤 Wilhelm E Walles
- 👤 Jr Thomas Houtman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:27
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/72; A61K8/81; A61K8/817; A61Q; A61Q5/00; A61Q5/06; Y; Y10; Y10S; Y10S424/00; Y10S424/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
15 words
A COMPOSITION FOR SETTING HAIR COMPRISING A RING SUBSTITUTED N-VINYL-2-OXAZOLIDINONE POLYMER OF THE STRUCTURAL FORMULA:
Claim 2
Dependent Claim
15 words
A COMPOSITION FOR SETTING HAIR COMPRISING A RING SUBSTITUTED N-VINYL-2-OXAZOLIDINONE POLYMER OF THE STRUCTURAL FORMULA:
References Cited (Backward Citations)
US2818362A
Cited
US2793980A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-09 | 1964-02-08 | 1964-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-09 | 1968-02-08 | 1968-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-09 | 1972-02-08 | 1972-08-09 | $7700.00 | Window Closed / Lapsed |