US3454357A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and apparatus for expanding inorganic salts
Assignee: American Potash and Chemical Corp
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Filing: 1964-08-03
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Granted: 1969-07-08
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Expires: 1984-08-03
Abstract
No abstract record available.
Inventors
- 👤 Raymond C Rhees
- 👤 Howard N Hammar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 10:49
CPC Classifications
C; C01; C01G; C01G55/00; C01B; C01B21/00; C01B21/082; C01B21/16; C01D; C01D5/00; C01D5/18; C01D7/00; C01F; C01F11/00; C01F11/20; C01F11/24; C01F11/30; C01F3/00; C01F5/00; C01F5/40; C01F7/00; C01F7/02; C01F7/68; C01F7/74; C01F7/746; C01F7/76; C01F7/762; C01F7/765; C01G1/00; C01G11/00; C01G17/00; C01G19/00; C01G25/00; C01G25/06; C01G29/00; C01G3/00; C01G3/04; C01G3/05; C01G3/10; C01G31/00; C01G31/04; C01G37/00; C01G37/08; C01G37/14; C01G41/00; C01G43/00; C01G45/00; C01G45/06; C01G45/07; C01G49/00; C01G49/10; C01G51/00; C01G51/08; C01G53/00; C01G53/08; C01G53/09; C01G9/00; C01G9/06; C01P; C01P2006/00; C01P2006/11
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2673841A
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US2062650A
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US2146051A
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GB629171A
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US2998310A
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US3010911A
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US3097832A
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US3206905A
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US3145019A
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US3309170A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-07 | 1973-01-06 | 1973-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-07 | 1977-01-06 | 1977-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-07 | 1981-01-06 | 1981-07-08 | $7700.00 | Window Closed / Lapsed |