Patent US3000878A successfully refreshed from Google Patents.
US3000878A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of alkyl-substituted
Assignee: —
•
Filing: —
•
Granted: 1961-09-19
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Expires: 1978-09-19
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:12
CPC Classifications
C; C07; C07D; C07D201/00; C07D201/02; C07D201/08; C08; C08G; C08G63/00; C08G63/02; C08G63/06; C08G63/08; C08G63/78; C08G63/82; C08G63/823
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
17 words
A PROCESS FOR THE PRODUCTION OF ALKYL-SUBSTITUTED EPSILON-CAPROLACTAMS, WHICH COMPRISES REACTING AN ALKYLSUBSTITUTED EPSILON-CAPROLACTONE, OF THE FORMULA
Claim 2
Dependent Claim
17 words
A PROCESS FOR THE PRODUCTION OF ALKYL-SUBSTITUTED EPSILON-CAPROLACTAMS, WHICH COMPRISES REACTING AN ALKYLSUBSTITUTED EPSILON-CAPROLACTONE, OF THE FORMULA
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) | 1964-09-18 | 1965-03-20 | 1965-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-18 | 1969-03-20 | 1969-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-18 | 1973-03-20 | 1973-09-19 | $7700.00 | Window Closed / Lapsed |