US3280189A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of alcohol blocked n-hydroxymethyl unsaturated acid amides
Assignee: Celanese Coatings Co
•
Filing: 1961-11-17
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Granted: 1966-10-18
•
Expires: 1981-11-17
Abstract
No abstract record available.
Inventors
- 👤 Jr Oliver I Cline
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:23
CPC Classifications
C; C07; C07C; C07C233/00; C07C233/01; C07C233/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
17 words
IN A PROCESS FOR THE PREPARATION OF AN ALCOHOL BLOCKED N-METHYLOL UNSATURATED ACID AMIDE OF THE FORMULA
Claim 2
Dependent Claim
17 words
IN A PROCESS FOR THE PREPARATION OF AN ALCOHOL BLOCKED N-METHYLOL UNSATURATED ACID AMIDE OF THE FORMULA
References Cited (Backward Citations)
US2689844A
Cited
US2760977A
Cited
US2810713A
Cited
FR1230790A
Cited
US3079434A
Cited
US3087965A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-17 | 1970-04-18 | 1970-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-17 | 1974-04-18 | 1974-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-17 | 1978-04-18 | 1978-10-18 | $7700.00 | Window Closed / Lapsed |