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US3400916A
Expired / Lapsed
US
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Method and apparatus for conditioning particulate materials
Assignee: National Engineering Co
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Filing: 1966-05-04
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Granted: 1968-09-10
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Expires: 1986-05-04
Abstract
No abstract record available.
Inventors
- 👤 Elbert C Troy
- 👤 Robert M Hutchins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:53
CPC Classifications
B; B22; B22C; B22C5/00; B22C5/04; B01; B01F; B01F33/00; B01F33/40; B01F33/402; B01F35/00; B01F35/50; B01F35/53; B01F35/531; B01F35/5311; B22C5/08
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
49 words
A METHOD OF TREATING PARTICULATE MATERIAL COMPRISING MIXING A MASS OF SAID MATERIAL BY CIRCULAR MOVEMENT AROUND A CONFINED AREA, LIFTING A FRACTIONAL PORTION OF SAID MASS UPWARDLY ABOVE THE REMAINING PORTION, DROPPING SAID LIFTED FRACTIONAL PORTION OF MATERIAL TO RETURN BACK TO SAID REMAINING PORTIONS, DIVIDING SAID DROP-
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) | 1971-09-10 | 1972-03-11 | 1972-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-10 | 1976-03-11 | 1976-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-10 | 1980-03-11 | 1980-09-10 | $7700.00 | Window Closed / Lapsed |