US2792301A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of manufacturing flint or like pyrophoric material in extrusion presses
Assignee: Evonik Operations GmbH
•
Filing: 1953-01-23
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Granted: 1957-05-14
•
Expires: 1973-01-23
Abstract
No abstract record available.
Inventors
- 👤 Bungardt Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:59
CPC Classifications
C; C06; C06C; C06C15/00; Y; Y10; Y10S; Y10S72/00; Y10S72/70
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
AN ALLOY CAPABLE OF BEING EXTRUDED AT REDUCED PRESS POWERS COMPRISING ABOUT 60 TO ABOUT 95.5 PARTS BY WEIGHT OF MISCH METAL, ABOUT 4.5 TO ABOUT 40 PARTS BY WEIGHT OF IRON, AND ABOUT .3 TO ABOUT 1 PART BY WEIGHT OF TITANIUM HAVING, UPON CONVERSION TO THE OXIDE, A HEAT OF FORMATION PER GRAM ATOM OF OXYGEN AT LEAST EQUAL TO THAT OF CERIUM.
Claim 2
Dependent Claim
65 words
AN ALLOY CAPABLE OF BEING EXTRUDED AT REDUCED PRESS POWERS COMPRISING ABOUT 60 TO ABOUT 95.5 PARTS BY WEIGHT OF MISCH METAL, ABOUT 4.5 TO ABOUT 40 PARTS BY WEIGHT OF IRON, AND ABOUT .3 TO ABOUT 1 PART BY WEIGHT OF TITANIUM HAVING, UPON CONVERSION TO THE OXIDE, A HEAT OF FORMATION PER GRAM ATOM OF OXYGEN AT LEAST EQUAL TO THAT OF CERIUM.
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Cited
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Cited
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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) | 1960-05-13 | 1960-11-12 | 1961-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-13 | 1964-11-12 | 1965-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-13 | 1968-11-12 | 1969-05-14 | $7700.00 | Window Closed / Lapsed |