Patent US2798818A successfully refreshed from Google Patents.
US2798818A
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Moldable exothermic compositions
Assignee: Exomet Inc
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Filing: 1954-03-15
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Granted: 1957-07-09
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Expires: 1974-03-15
Abstract
No abstract record available.
Inventors
- 👤 Erich C Pletsch
- 👤 Loris M Diran
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:19
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
106 words
IN A MOLDABLE EXOTHERMIC COMPOSITION IN A PLUVERULENT STATE FOR FORMING SLEEVES, CORES, HOT-TOPS, PADS AND THE LIKE COMPRISING ALUMINUM, A NITRATE OF AN ALKALI METAL, AN OXIDE OF THE GROUP CONSISTING OF IRON OXIDE AND MANGANSES OXIDE, THE AVAILABLE OXYGEN FROM THE NITRATE AND OXIDES BEING APPRECIABLY LESS THAN THAT REQUIRED TO OXIDIZE ALL THE ALUMINUM, A REFACTORY MATERIAL, BENTONITE AND A BINDER, A SUFFICIENT AMOUNT OF AN ORGANIC ACID OF THE GROUP CONSISTING OF CITRIC, TARTARIC, OXALIC, LACTIC, MALIC, AND BENZOIC ACID TO PREVENT THE RELEASE OF AMMONIA WHEN THE COMPOSITION IS WET, AND FROM 0.5 TO 2.5% BY WEIGHT OF A METAL FLUOBORATE.
Claim 2
Dependent Claim
106 words
IN A MOLDABLE EXOTHERMIC COMPOSITION IN A PLUVERULENT STATE FOR FORMING SLEEVES, CORES, HOT-TOPS, PADS AND THE LIKE COMPRISING ALUMINUM, A NITRATE OF AN ALKALI METAL, AN OXIDE OF THE GROUP CONSISTING OF IRON OXIDE AND MANGANSES OXIDE, THE AVAILABLE OXYGEN FROM THE NITRATE AND OXIDES BEING APPRECIABLY LESS THAN THAT REQUIRED TO OXIDIZE ALL THE ALUMINUM, A REFACTORY MATERIAL, BENTONITE AND A BINDER, A SUFFICIENT AMOUNT OF AN ORGANIC ACID OF THE GROUP CONSISTING OF CITRIC, TARTARIC, OXALIC, LACTIC, MALIC, AND BENZOIC ACID TO PREVENT THE RELEASE OF AMMONIA WHEN THE COMPOSITION IS WET, AND FROM 0.5 TO 2.5% BY WEIGHT OF A METAL FLUOBORATE.
References Cited (Backward Citations)
US1859651A
Cited
US2378699A
Cited
US2452995A
Cited
US2499641A
Cited
US2591105A
Cited
US2672681A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-07-08 | 1961-01-07 | 1961-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-07-08 | 1965-01-07 | 1965-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-07-08 | 1969-01-07 | 1969-07-09 | $7700.00 | Window Closed / Lapsed |