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US3517033A
Expired / Lapsed
US
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Process for the production of epsilon-caprolactone and its alkyl derivatives
Assignee: Evonik Operations GmbH
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Filing: 1966-09-07
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Granted: 1970-06-23
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Expires: 1986-09-07
Abstract
No abstract record available.
Inventors
- 👤 Otto Weiberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:58
CPC Classifications
C; C07; C07D; C07D315/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3064008A
Cited
US3056802A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-06-22 | 1973-12-22 | 1974-06-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-06-22 | 1977-12-22 | 1978-06-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-06-22 | 1981-12-22 | 1982-06-23 | $7700.00 | Window Closed / Lapsed |