US3767648A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of epsilon-caprolactam and o-acetylcyclohexane oxime
Assignee: Kanegafuchi Spinning Co Ltd
•
Filing: 1971-12-01
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Granted: 1973-10-23
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Expires: 1991-12-01
Abstract
Abstract THIS INVENTION RELATES TO A PROCESS FOR SIMULTANEOUSLY PRODUCING E-CAPROLACTAM AND O - ACETYLCYCLOHEXANONEOXIME.
Inventors
- 👤 I Fujita
- 👤 H Tani
- 👤 S Deguchi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:41
CPC Classifications
C; C07; C07D; C07D201/00; C07D201/02; C07D201/04; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 0
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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) | 1976-10-22 | 1977-04-23 | 1977-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-22 | 1981-04-23 | 1981-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-22 | 1985-04-23 | 1985-10-23 | $7700.00 | Window Closed / Lapsed |