Patent US3331560A successfully refreshed from Google Patents.
US3331560A
Expired / Lapsed
US
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Process for milling of particulate solids in liquids
Assignee: British Titan Products Co Ltd
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Filing: 1964-07-17
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Granted: 1967-07-18
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Expires: 1984-07-17
Abstract
No abstract record available.
Inventors
- 👤 Hodgson John
- 👤 Hall Robert Oswald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:18
CPC Classifications
B; B02; B02C; B02C17/00; B02C17/16; B01; B01F; B01F27/00; B01F27/60; B01F33/00; B01F33/25; B01F33/80; B01F33/83; B01F33/8305; B02C17/18; B02C17/20
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
123 words
A PROCESS FOR MILLING PARTICULATE SOLIDS IN LIQUIDS COMPRISING THE STEPS OF (A) PROVIDING A MILLING ZONE HAVING, IN OPERABLE ASSOCIATION THEREWITH, THE FOLLOWING ELEMENTS: (I) A SINGLE ROTATABLE IMPELLER WITHIN SAID MILLING ZONE, (II) A FIRST FLUID-DIRECTING MEANS FOR DIRECTING THE FLOW OF FLUID BETWEEN THE INSIDE AND OUTSIDE OF SAID MILLING ZONE IN A DIRECTION SUBSTANTIALLY AT RIGHT ANGLES TO THE PLANE OF ELEMENT (I), AND (III) A SECOND FLUID-DIRECTING MEANS FOR DIRECTING THE FLOW OF FLUID BETWEEN THE INSIDE AND OUTSIDE OF SAID MILLING ZONE IN A DIRECTION SUBSTANTIALLY AT RIGHT ANGLES TO ONE OF SAID ELEMENTS (I) AND (II), (B) ROTATING SAID ELEMENT (I) WITH A PERIPHERAL SPEED IN THE RANGE OF ABOUT 10 TO 120 FEET PER SECOND,
Claim 2
Dependent Claim
123 words
A PROCESS FOR MILLING PARTICULATE SOLIDS IN LIQUIDS COMPRISING THE STEPS OF (A) PROVIDING A MILLING ZONE HAVING, IN OPERABLE ASSOCIATION THEREWITH, THE FOLLOWING ELEMENTS: (I) A SINGLE ROTATABLE IMPELLER WITHIN SAID MILLING ZONE, (II) A FIRST FLUID-DIRECTING MEANS FOR DIRECTING THE FLOW OF FLUID BETWEEN THE INSIDE AND OUTSIDE OF SAID MILLING ZONE IN A DIRECTION SUBSTANTIALLY AT RIGHT ANGLES TO THE PLANE OF ELEMENT (I), AND (III) A SECOND FLUID-DIRECTING MEANS FOR DIRECTING THE FLOW OF FLUID BETWEEN THE INSIDE AND OUTSIDE OF SAID MILLING ZONE IN A DIRECTION SUBSTANTIALLY AT RIGHT ANGLES TO ONE OF SAID ELEMENTS (I) AND (II), (B) ROTATING SAID ELEMENT (I) WITH A PERIPHERAL SPEED IN THE RANGE OF ABOUT 10 TO 120 FEET PER SECOND,
Claim 3
Dependent Claim
33 words
A PROCESS AS CLAIMED IN CLAIM 1 WHEREIN THE SLURRY INTRODUCED INTO THE MILLING ZONE CONTAINS A DISPERING AGENT SELECTED FROM THE GROUP CONSISTING OF AN ALKALI METAL SILICATE, PHOSPHATE, ALKANOLAMINE AND ALKYLAMINE.
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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) | 1970-07-17 | 1971-01-16 | 1971-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-17 | 1975-01-16 | 1975-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-17 | 1979-01-16 | 1979-07-18 | $7700.00 | Window Closed / Lapsed |