US3206127A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for upgrading mica
Assignee: Freeport Kaolin Co
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Filing: 1962-11-06
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Granted: 1965-09-14
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Expires: 1982-11-06
Abstract
No abstract record available.
Inventors
- 👤 Horton H Morris
- 👤 Kenneth L Turner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 00:28
CPC Classifications
C; C04; C04B; C04B14/00; C04B14/02; C04B14/04; C04B14/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
AN IMPROVED PROCESS FOR IMPROVING PIGMENTARY PROPERTIES OF MICA HAVING A BULK DENSITY OF MORE THAN 15 POUNDS PER CUBIC FOOT WHICH COMPRISES SUBJECTING AN AQUEOUS SLURRY OF SAID MICA AND A FINE, NONABRASIVE GRINDING MEDIA TO RAPID AGAITATION SO AS TO EFFECT FINE MILLING MECHANICAL ACTION INCLUDING (A) MILD VISCOUS SHEAR MILLING DUE TO AGITATION OF THE ADMIXED FINE MILLING MEDIA, WATER AND MICA, (B) MILD PERCUSSIVE MILLING VIA MULTIPLICITY OF LOW INERTIA IMPACT COLLISIONS OF SAID MILLING MEDIA WITH SAID MICA, (C) MILD FRACTIONAL MILLING BY A COMBINATION OF THE RUBBING ACTION OF SAID FINE MILLING MEDIA AND SAID MICA, AND RECOVERING A MICA PRODUCT OF BULK DENSITY OF LESS THAN 15 POUNDS PER CUBIC FOOT.
Claim 2
Dependent Claim
118 words
AN IMPROVED PROCESS FOR IMPROVING PIGMENTARY PROPERTIES OF MICA HAVING A BULK DENSITY OF MORE THAN 15 POUNDS PER CUBIC FOOT WHICH COMPRISES SUBJECTING AN AQUEOUS SLURRY OF SAID MICA AND A FINE, NONABRASIVE GRINDING MEDIA TO RAPID AGAITATION SO AS TO EFFECT FINE MILLING MECHANICAL ACTION INCLUDING (A) MILD VISCOUS SHEAR MILLING DUE TO AGITATION OF THE ADMIXED FINE MILLING MEDIA, WATER AND MICA, (B) MILD PERCUSSIVE MILLING VIA MULTIPLICITY OF LOW INERTIA IMPACT COLLISIONS OF SAID MILLING MEDIA WITH SAID MICA, (C) MILD FRACTIONAL MILLING BY A COMBINATION OF THE RUBBING ACTION OF SAID FINE MILLING MEDIA AND SAID MICA, AND RECOVERING A MICA PRODUCT OF BULK DENSITY OF LESS THAN 15 POUNDS PER CUBIC FOOT.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-13 | 1969-03-15 | 1969-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-13 | 1973-03-15 | 1973-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-13 | 1977-03-15 | 1977-09-14 | $7700.00 | Window Closed / Lapsed |