US3307792A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of particulate solids
Assignee: British Titan Products Co Ltd
•
Filing: 1963-10-23
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Granted: 1967-03-07
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Expires: 1983-10-23
Abstract
No abstract record available.
Inventors
- 👤 Hughes William
- 👤 Haigh Harold Edward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:18
CPC Classifications
B; B02; B02C; B02C17/00; B02C17/16; B01; B01F; B01F27/00; B01F27/80; B01F27/93; B01F35/00; B01F35/50; B01F35/53; B01F35/531; B01F35/5311; B01F27/05; B01F27/11; B01F27/19; B01F27/191
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
67 words
AN APPARATUS FOR SAND MILLING COMPRISING: (A) A GENERALLY VERTICAL CONTAINER; (B) MEANS FOR FEEDING PARTICULATE SOLIDS AND LIQUID INTO THE BOTTOM OF SAID CONTAINER; (C) MEANS FOR REMOVING MILLED SOLIDS AND LIQUID FROM THE UPPER PORTION OF SAID CONTAINER; (D) A ROTATABLE SHAFT EXTENDING AXIALLY INTO SAID CONTAINER; (E) A PLURALITY OF IMPELLERS SPACED ALONG SAID SHAFT AND ATTACHED THERETO SO AS TO ROTATABLE THEREWITH; AND
Claim 2
Independent Claim
67 words
AN APPARATUS FOR SAND MILLING COMPRISING: (A) A GENERALLY VERTICAL CONTAINER; (B) MEANS FOR FEEDING PARTICULATE SOLIDS AND LIQUID INTO THE BOTTOM OF SAID CONTAINER; (C) MEANS FOR REMOVING MILLED SOLIDS AND LIQUID FROM THE UPPER PORTION OF SAID CONTAINER; (D) A ROTATABLE SHAFT EXTENDING AXIALLY INTO SAID CONTAINER; (E) A PLURALITY OF IMPELLERS SPACED ALONG SAID SHAFT AND ATTACHED THERETO SO AS TO ROTATABLE THEREWITH; AND
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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) | 1970-03-06 | 1970-09-05 | 1971-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-06 | 1974-09-05 | 1975-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-06 | 1978-09-05 | 1979-03-07 | $7700.00 | Window Closed / Lapsed |