US2876218A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amination of alpha-halo-epsiloncaprolactams
Assignee: Spencer Chemical Co
•
Filing: 1956-03-30
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Granted: 1959-03-03
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Expires: 1976-03-30
Abstract
No abstract record available.
Inventors
- 👤 William C Francis
- 👤 Thomas R Hopkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:09
CPC Classifications
C; C07; C07D; C07D223/00; C07D223/02; C07D223/06; C07D223/08; C07D223/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
17 words
THE PROCESS WHICH COMPRISES REACTING AN ALPHAHALO-EPSILON-CAPROLACTAM WITH AMMONIA UNDER LIQUID REACTION CONDITIONS TO PRODUCE ALPHA-AMMINO EPSILON-CAPROLACTAM.
Claim 2
Dependent Claim
17 words
THE PROCESS WHICH COMPRISES REACTING AN ALPHAHALO-EPSILON-CAPROLACTAM WITH AMMONIA UNDER LIQUID REACTION CONDITIONS TO PRODUCE ALPHA-AMMINO EPSILON-CAPROLACTAM.
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) | 1962-03-02 | 1962-09-01 | 1963-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-02 | 1966-09-01 | 1967-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-02 | 1970-09-01 | 1971-03-03 | $7700.00 | Window Closed / Lapsed |