US3235090A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydroclones
Assignee: Oklahoma State University
•
Filing: 1961-12-15
•
Granted: 1966-02-15
•
Expires: 1981-12-15
Abstract
No abstract record available.
Inventors
- 👤 Robert E Bose
- 👤 Jr Ernest C Fitch
- 👤 Gerlach Charles Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:29
CPC Classifications
B; B04; B04C; B04C5/00; B04C5/14; B04C5/185; B01; B01D; B01D21/00; B01D21/24; B01D21/245; B01D21/2483; B01D21/2488; B01D21/26; B01D21/267; B04C5/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2098608A
Cited
GB607787A
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US2590691A
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US2754968A
Cited
US2649963A
Cited
FR1037980A
Cited
GB712792A
Cited
US2717536A
Cited
US2776053A
Cited
US2816658A
Cited
US2840240A
Cited
US3034647A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-14 | 1969-08-16 | 1970-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-14 | 1973-08-16 | 1974-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-14 | 1977-08-16 | 1978-02-15 | $7700.00 | Window Closed / Lapsed |