US3043431A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slurry filtration
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1959-04-23
•
Granted: 1962-07-10
•
Expires: 1979-04-23
Abstract
No abstract record available.
Inventors
- 👤 Arthur R Dudley
- 👤 Thomas H Royder
- 👤 William D Allison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 05:54
CPC Classifications
C; C10; C10G; C10G73/00; C10G73/02; C10G73/025; B; B01; B01D; B01D37/00; B01D37/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1262146A
Cited
US2779477A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-07-09 | 1966-01-08 | 1966-07-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-07-09 | 1970-01-08 | 1970-07-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-07-09 | 1974-01-08 | 1974-07-10 | $7700.00 | Window Closed / Lapsed |