US3309170A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of calcining and classifying borate
Assignee: Kern County Land Co
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Filing: 1963-03-21
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Granted: 1967-03-14
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Expires: 1983-03-21
Abstract
No abstract record available.
Inventors
- 👤 William T Griswold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:01
CPC Classifications
C; C01; C01B; C01B35/00; C01B35/06; C01B35/08; C01B35/10; C01B35/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
THE METHOD OF SIMULTANEOUSLY CALCINING AND CLASSIFYING A BORATE OF THE GROUP INCLUDING BORAX, COLEMANITE AND TINCALCONITE COMPRISING THE STEPS OF SUBJECTING THE BORATE TO A TEMPERATURE AT LEAST AS HIGH AS THAT AT WHICH THE BORATE DECREPITATES INTO FINE PARTICLES AND LESS THAN THAT AT WHICH THE BORATE AGGLOMERATES, SIMULTANEOUSLY PASSING AN UPWARDLY DIRECTEDSTREAM OF GAS THROUGH THE PARTICLES OF DECEPITATION WHEREBY THE FINER PARTICLES ARE CARRIED UPWARD BY THE STREAM OF GAS AND THE LARGER PARTICLES FALL UNDER THE FORCE OF GRAVITY TO THEREBY CLASSIFY THE FINISHED PRODUCT, AND RECOVERING SAID FINER PARTICLES.
Claim 2
Independent Claim
95 words
THE METHOD OF SIMULTANEOUSLY CALCINING AND CLASSIFYING A BORATE OF THE GROUP INCLUDING BORAX, COLEMANITE AND TINCALCONITE COMPRISING THE STEPS OF SUBJECTING THE BORATE TO A TEMPERATURE AT LEAST AS HIGH AS THAT AT WHICH THE BORATE DECREPITATES INTO FINE PARTICLES AND LESS THAN THAT AT WHICH THE BORATE AGGLOMERATES, SIMULTANEOUSLY PASSING AN UPWARDLY DIRECTEDSTREAM OF GAS THROUGH THE PARTICLES OF DECEPITATION WHEREBY THE FINER PARTICLES ARE CARRIED UPWARD BY THE STREAM OF GAS AND THE LARGER PARTICLES FALL UNDER THE FORCE OF GRAVITY TO THEREBY CLASSIFY THE FINISHED PRODUCT, AND RECOVERING SAID FINER PARTICLES.
References Cited (Backward Citations)
US3103412A
Cited
US1487806A
Cited
US2097411A
Cited
GB629171A
Cited
US2621034A
Cited
US2586818A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-13 | 1970-09-12 | 1971-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-13 | 1974-09-12 | 1975-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-13 | 1978-09-12 | 1979-03-14 | $7700.00 | Window Closed / Lapsed |