US3179516A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Direct powder rolling
Assignee: Dow Chemical Co
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Filing: 1962-04-27
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Granted: 1965-04-20
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Expires: 1982-04-27
Abstract
No abstract record available.
Inventors
- 👤 Cross Alan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:54
CPC Classifications
B; B22; B22F; B22F3/00; B22F3/18; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
THE METHOD OF TRANSFORMING SPHEROIDAL, ATOMIZED PELLETS OF MAGNESIUM-BASE ALLOY INTO SHEET FORM WHICH COMPRISES: PASSING THE SPHEROIDAL, ATOMIZED PELLETS BETWEEN THE ROLLS OF A MILL WHILE THE SPHEROIDAL PELLETS AND THE ROLLS ARE AT TEMPERATURES BELOW THAT AT WHICH THE PELLETS SUBSTANTIALLY STICK TOGETHER ON BEING ROLLED, AND WITH A NOMAINAL ROLL CLEARANCE OF SUBSTANTIALLY ZERO, THEREBY TO FLATTEN THE SPHEROIDAL PELLETS; PREHEATING THE SO-FLATTENED PELLETS TO A TEMPERATURE IN THE RANGE OF ABOUT 350 TO 550*C.; FEEDING THE PREHEATED, FLATTENED PELLETS BETWEEN THE HEATED ROLLS OF A MILL, THE ROLLS HAVING SUBSTANTIALLY ZERO CLEARANCE, AND THE ROLLS BEING AT A TEMPERATURE IN THE RANGE OF ABOUT 320 TO 400*C., THEREBY TO FORM SHEET MATERIAL OF MAGNESIUM-BASE ALLOY.
Claim 2
Independent Claim
119 words
THE METHOD OF TRANSFORMING SPHEROIDAL, ATOMIZED PELLETS OF MAGNESIUM-BASE ALLOY INTO SHEET FORM WHICH COMPRISES: PASSING THE SPHEROIDAL, ATOMIZED PELLETS BETWEEN THE ROLLS OF A MILL WHILE THE SPHEROIDAL PELLETS AND THE ROLLS ARE AT TEMPERATURES BELOW THAT AT WHICH THE PELLETS SUBSTANTIALLY STICK TOGETHER ON BEING ROLLED, AND WITH A NOMAINAL ROLL CLEARANCE OF SUBSTANTIALLY ZERO, THEREBY TO FLATTEN THE SPHEROIDAL PELLETS; PREHEATING THE SO-FLATTENED PELLETS TO A TEMPERATURE IN THE RANGE OF ABOUT 350 TO 550*C.; FEEDING THE PREHEATED, FLATTENED PELLETS BETWEEN THE HEATED ROLLS OF A MILL, THE ROLLS HAVING SUBSTANTIALLY ZERO CLEARANCE, AND THE ROLLS BEING AT A TEMPERATURE IN THE RANGE OF ABOUT 320 TO 400*C., THEREBY TO FORM SHEET MATERIAL OF MAGNESIUM-BASE ALLOY.
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) | 1968-04-19 | 1968-10-19 | 1969-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-19 | 1972-10-19 | 1973-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-19 | 1976-10-19 | 1977-04-20 | $7700.00 | Window Closed / Lapsed |