US3467172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exothermic metallurgical charges
Assignee: Amcol International Corp
•
Filing: 1966-08-01
•
Granted: 1969-09-16
•
Expires: 1986-08-01
Abstract
No abstract record available.
Inventors
- 👤 Arthur G Clem
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:47
CPC Classifications
B; B22; B22D; B22D27/00; B22D27/04
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE67350C
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US1312401A
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US1294209A
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FR864420A
Cited
US2335008A
Cited
US2476296A
Cited
US2925637A
Cited
FR1256395A
Cited
US3314116A
Cited
US3273211A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-09-15 | 1973-03-17 | 1973-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-09-15 | 1977-03-17 | 1977-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-09-15 | 1981-03-17 | 1981-09-16 | $7700.00 | Window Closed / Lapsed |