US3385199A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluid-solids contact apparatus
Assignee: Hupp Corp
•
Filing: 1967-05-03
•
Granted: 1968-05-28
•
Expires: 1987-05-03
Abstract
No abstract record available.
Inventors
- 👤 Jr Horace L Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 08:45
CPC Classifications
B; B01; B01J; B01J8/00; B01J8/08; B01J8/14; B01J8/18; B01J8/24; B01J8/245
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2105778A
Cited
US2582712A
Cited
US2582711A
Cited
US2700644A
Cited
US2689973A
Cited
US2786280A
Cited
US3112220A
Cited
US3110626A
Cited
US3189460A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-28 | 1971-11-27 | 1972-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-28 | 1975-11-27 | 1976-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-28 | 1979-11-27 | 1980-05-28 | $7700.00 | Window Closed / Lapsed |