Patent US3203790A successfully refreshed from Google Patents.
US3203790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extruded flints and process for making same
Assignee: Ronson Corp
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Filing: 1962-03-28
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Granted: 1965-08-31
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Expires: 1982-03-28
Abstract
No abstract record available.
Inventors
- 👤 Bungardt Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:20
CPC Classifications
C; C06; C06C; C06C15/00; C22; C22C; C22C28/00; Y; Y10; Y10S; Y10S72/00; Y10S72/70
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
28 words
A PYROPHORIC ALLOY COMPOSITION SUITABLE FOR EXTRUSION ESSENTIALLY CONSISTING OF ABOUT 4.5 TO 40% OF IRON AND 0.5 TO 0.45% OF COPPER, THE REMAINDER BEING CERIUM (MISCH METAL).
Claim 2
Dependent Claim
28 words
A PYROPHORIC ALLOY COMPOSITION SUITABLE FOR EXTRUSION ESSENTIALLY CONSISTING OF ABOUT 4.5 TO 40% OF IRON AND 0.5 TO 0.45% OF COPPER, THE REMAINDER BEING CERIUM (MISCH METAL).
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) | 1968-08-30 | 1969-03-01 | 1969-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-30 | 1973-03-01 | 1973-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-30 | 1977-03-01 | 1977-08-31 | $7700.00 | Window Closed / Lapsed |