US2832770A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of alpha-bromo and alpha-
Assignee: —
•
Filing: —
•
Granted: 1958-04-29
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Expires: 1975-04-29
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:27
CPC Classifications
C; C07; C07D; C07D223/00; C07D223/02; C07D223/06; C07D223/08; C07D223/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
THE PROCESS WHICH COMPRISES REACTING EPSILON-CAPROLACTAM WITH A BROMINATING AGENT AND HYDROLYZING THE RESULTING PRODUCT TO PRODUCE ALPHA-BROMO-EPSILON-CAPROLACTAM.
Claim 2
Dependent Claim
18 words
THE PROCESS WHICH COMPRISES REACTING EPSILON-CAPROLACTAM WITH A BROMINATING AGENT AND HYDROLYZING THE RESULTING PRODUCT TO PRODUCE ALPHA-BROMO-EPSILON-CAPROLACTAM.
References Cited (Backward Citations)
DE748542C
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-28 | 1961-10-28 | 1962-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-28 | 1965-10-28 | 1966-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-28 | 1969-10-28 | 1970-04-29 | $7700.00 | Window Closed / Lapsed |