Patent US3176925A successfully refreshed from Google Patents.
US3176925A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for manufacture of finely divided pigments
Assignee: Imperial Chemical Industries Ltd
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Filing: 1962-08-06
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Granted: 1965-04-06
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Expires: 1982-08-06
Abstract
No abstract record available.
Inventors
- 👤 Huband Eric Reginald
- 👤 Mitchell John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:31
CPC Classifications
B; B02; B02C; B02C19/00; B02C23/00; B02C23/06; C; C09; C09C; C09C3/00; C09C3/04; C09C3/041; C01; C01P; C01P2004/00; C01P2004/30; C01P2004/38; C01P2004/50; C01P2004/60; C01P2004/61; C01P2004/80; C01P2006/00; C01P2006/12; C01P2006/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A PROCESS FOR REDUCING THE PARTICLE SIZE OF A PULVERISABLE SOLID WHICH COMPRISES VIGOROUSLY AGITATING A FLUID MIXTURE CONSISTING ESSENTIALLY OF SAID PULVERISABLE SOLID, A GRINDING AID SELECTED FROM THE CLASS CONSISTING OF WATERSOLUBLE INORGANIC SALTS AND MIXTURES THEREOF AS THE SOLE GRINDING AID, AND AN ORGANIC LIQUID, THE SOLUBILITIES OF SAID SOLID AND SAID GRINDING AID IN SAID LIQUID BEING LESS THAN 5% BY WEIGHT.
Claim 2
Dependent Claim
66 words
A PROCESS FOR REDUCING THE PARTICLE SIZE OF A PULVERISABLE SOLID WHICH COMPRISES VIGOROUSLY AGITATING A FLUID MIXTURE CONSISTING ESSENTIALLY OF SAID PULVERISABLE SOLID, A GRINDING AID SELECTED FROM THE CLASS CONSISTING OF WATERSOLUBLE INORGANIC SALTS AND MIXTURES THEREOF AS THE SOLE GRINDING AID, AND AN ORGANIC LIQUID, THE SOLUBILITIES OF SAID SOLID AND SAID GRINDING AID IN SAID LIQUID BEING LESS THAN 5% BY WEIGHT.
References Cited (Backward Citations)
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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) | 1968-04-05 | 1968-10-05 | 1969-04-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-05 | 1972-10-05 | 1973-04-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-05 | 1976-10-05 | 1977-04-06 | $7700.00 | Window Closed / Lapsed |