US2607672A
Expired / Lapsed
US
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Ignition composition
Assignee: EIDP Inc
•
Filing: 1948-12-01
•
Granted: 1952-08-19
•
Expires: 1968-12-01
Abstract
No abstract record available.
Inventors
- 👤 Spaeth Charles Philip
- 👤 Williams Charles Pierce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:20
CPC Classifications
C; C06; C06C; C06C7/00; C06B; C06B33/00; F; F42; F42B; F42B3/00; F42B3/10; F42B3/12; F42B3/128; Y; Y10; Y10S; Y10S149/00; Y10S149/11; Y10S149/114
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
32 words
AN IGNITION COMPOSITION COMPRISING BISMUTH IN THE PROPORTION OF 40 TO 75% BY WEIGHT, SELENIUM IN THE PROPORTION OF BETWEEN 60 AND 25% BY WEIGHT AND A MINOR PERCENTAGE OF AN IN-
Claim 2
Dependent Claim
32 words
AN IGNITION COMPOSITION COMPRISING BISMUTH IN THE PROPORTION OF 40 TO 75% BY WEIGHT, SELENIUM IN THE PROPORTION OF BETWEEN 60 AND 25% BY WEIGHT AND A MINOR PERCENTAGE OF AN IN-
References Cited (Backward Citations)
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US2095302A
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US2168030A
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US2395045A
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US2370159A
Cited
US2450892A
Cited
US2478918A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-19 | 1956-02-18 | 1956-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-19 | 1960-02-18 | 1960-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-19 | 1964-02-18 | 1964-08-19 | $7700.00 | Window Closed / Lapsed |