US3511757A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Atmospheric steam distillation of adipic acid waste mixture
Assignee: Imperial Chemical Industries Ltd
•
Filing: 1968-01-22
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Granted: 1970-05-12
•
Expires: 1988-01-22
Abstract
No abstract record available.
Inventors
- 👤 Winston Costain
- 👤 Bernard William Hugh Terry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:23
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/42; C07C51/43; C07C51/44; C07C51/445
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2703331A
Cited
US3036127A
Cited
US3180878A
Cited
US3290369A
Cited
US3354056A
Cited
US3321382A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-05-11 | 1973-11-10 | 1974-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-11 | 1977-11-10 | 1978-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-11 | 1981-11-10 | 1982-05-12 | $7700.00 | Window Closed / Lapsed |