US3448234A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical resistivity control of fluidized beds
Assignee: Battelle Development Corp
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Filing: 1966-08-31
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Granted: 1969-06-03
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Expires: 1986-08-31
Abstract
No abstract record available.
Inventors
- 👤 William M Goldberger
- 👤 Allan K Reed
- 👤 Cloyd A Snavely
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:47
CPC Classifications
F; F27; F27D; F27D11/00; F27D11/02; F27D11/04; B; B01; B01J; B01J8/00; B01J8/16; B01J8/18; B01J8/24; B01J8/42; C; C01; C01B; C01B32/00; C01B32/40
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA568220A
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US3170763A
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US3025385A
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US3060304A
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US3136836A
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US3137781A
Cited
US3157468A
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US3305661A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-06-02 | 1972-12-02 | 1973-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-02 | 1976-12-02 | 1977-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-02 | 1980-12-02 | 1981-06-03 | $7700.00 | Window Closed / Lapsed |