US3198640A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exothermic composition
Assignee: Exomet Inc
•
Filing: 1962-05-31
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Granted: 1965-08-03
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Expires: 1982-05-31
Abstract
No abstract record available.
Inventors
- 👤 John P Walsh
- 👤 Harold F Bishop
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:05
CPC Classifications
C; C22; C22B; C22B5/00; C22B5/02; C22B5/04; B; B22; B22D; B22D7/00; B22D7/06; B22D7/10; B22D7/104; C22B5/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
42 words
THE IMPROVED DRY EXOTHERMIC COMPOSITION CONSISTING ESSENTIALLY BY WEIGHT: GRANULAR REFRACTORY MATERIAL 20 TO 55%, PARTICULATE ALUMINUM 20 TO 40%, IRON OXIDE 20 TO 35%, POTASSIUM FLUOBORATE 0.5 TO 3.5%, SODIUM SILICATE BINDER 12 TO 16% AND SODIUM CHLORATE 0.5 TO 4.0%.
Claim 2
Dependent Claim
42 words
THE IMPROVED DRY EXOTHERMIC COMPOSITION CONSISTING ESSENTIALLY BY WEIGHT: GRANULAR REFRACTORY MATERIAL 20 TO 55%, PARTICULATE ALUMINUM 20 TO 40%, IRON OXIDE 20 TO 35%, POTASSIUM FLUOBORATE 0.5 TO 3.5%, SODIUM SILICATE BINDER 12 TO 16% AND SODIUM CHLORATE 0.5 TO 4.0%.
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) | 1968-08-02 | 1969-02-01 | 1969-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-02 | 1973-02-01 | 1973-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-02 | 1977-02-01 | 1977-08-03 | $7700.00 | Window Closed / Lapsed |