US2801590A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pyrophoric element
Assignee: Individual
•
Filing: 1951-06-14
•
Granted: 1957-08-06
•
Expires: 1971-06-14
Abstract
No abstract record available.
Inventors
- 👤 Claire C Balke
- 👤 William S Graff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:11
CPC Classifications
C; C06; C06C; C06C15/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
18 words
AN INCENDIARY COMPRISING A SINTERED POROUS PYROPHORIC ZIRCONIUM ALLOY ENCASED IN A STRENGTHENING AND PROTESTING POROUS FERROUS MATERIAL.
Claim 2
Dependent Claim
18 words
AN INCENDIARY COMPRISING A SINTERED POROUS PYROPHORIC ZIRCONIUM ALLOY ENCASED IN A STRENGTHENING AND PROTESTING POROUS FERROUS MATERIAL.
References Cited (Backward Citations)
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US1984775A
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US2073465A
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US2225424A
Cited
US2323303A
Cited
US2532323A
Cited
US2409307A
Cited
US2417437A
Cited
US2490570A
Cited
US2611316A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-05 | 1961-02-04 | 1961-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-05 | 1965-02-04 | 1965-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-05 | 1969-02-04 | 1969-08-06 | $7700.00 | Window Closed / Lapsed |