US2955137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat treated reaction products of n-alkylaminopropyl-gamma-hydroxybutyramides
Assignee: GAF Chemicals Corp
•
Filing: 1958-05-08
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Granted: 1960-10-04
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Expires: 1978-05-08
Abstract
No abstract record available.
Inventors
- 👤 Raymond L Mayhew
- 👤 Earl P Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:17
CPC Classifications
C; C07; C07C; C07C233/00; Y; Y10; Y10S; Y10S507/00; Y10S507/939
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
21 words
A COMPOSITION OF MATTER OBTAINED BY HEAT TREATING A PRODUCT CONSISTING OF AT LEAST ONE N-ALKYLAMINOPROPYLY-HYDROXYBUTYRAMIDE HAVING THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
21 words
A COMPOSITION OF MATTER OBTAINED BY HEAT TREATING A PRODUCT CONSISTING OF AT LEAST ONE N-ALKYLAMINOPROPYLY-HYDROXYBUTYRAMIDE HAVING THE FOLLOWING GENERAL FORMULA:
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-10-04 | 1964-04-04 | 1964-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-04 | 1968-04-04 | 1968-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-04 | 1972-04-04 | 1972-10-04 | $7700.00 | Window Closed / Lapsed |