US2923738A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Addition products of n-alkyl-gamma-hydroxycarboxylic acid amides and alkanolamines
Assignee: GAF Chemicals Corp
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Filing: 1958-05-08
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Granted: 1960-02-02
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Expires: 1978-05-08
Abstract
No abstract record available.
Inventors
- 👤 Earl P Williams
- 👤 Raymond L Mayhew
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 04:28
CPC Classifications
A; A61; A61Q; A61Q19/00; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/40; A61K8/42; C; C11; C11D; C11D1/00; C11D1/38; C11D1/52; C11D1/523; Y; Y10; Y10S; Y10S260/00; Y10S260/15; Y10S260/19; Y10S507/00; Y10S507/939
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-01 | 1963-08-03 | 1964-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-01 | 1967-08-03 | 1968-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-01 | 1971-08-03 | 1972-02-02 | $7700.00 | Window Closed / Lapsed |