US2840891A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High temperature structural material and method of producing same
Assignee: Individual
•
Filing: 1955-01-04
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Granted: 1958-07-01
•
Expires: 1975-01-04
Abstract
No abstract record available.
Inventors
- 👤 John S Nachtman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 00:05
CPC Classifications
C; C22; C22C; C22C32/00; C22C32/001; C22C32/0015; C22C32/0036
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
168 words
A METALLURGICAL COMPOSITION FOR USE IN THE PRODUCTION OF STRUCTURAL MATERIAL CAPABLE OF UNUSUAL STRENGTH AND HARDNESS UP TO ABOUT 1200*F. COMPRISING AN INTIMATE FINELY DIVIDED MIXTURE CONSISTING OF 75 TO 95 PARTS BY WEIGHT OF A METALLIC BASE SELECTED FROM THE GROUP CONSISTING OF ALUMINUM AND ALLOYS OF ALUMINUM, AND 25 TO 5 PARTS BY WEIGHT OF AN ADDITIVE SELECTED FROM THE GROUP CONSISTING OF THE INORGANIC OXYGEN BEARING COMPOUNDS OF A METAL SELECTED FROM THE GROUP CONSISTING OF MAGNESIUM, TITANIUM, VANADIUM, CHROMIUM, ZIRCONIUM, LANTHANUM, CERIUM AND PRASEODYMIUM, WHICH COMOUNDS DO NOT CONTAIN ANY NON-METAL OTHER THAN OXYGEN MIXTURES OF SAID COMPOUNDS, MIXTURES OF SAID COMOUNDS WITH ALUMINUM ALLOY STRENGTHENING METALS SELECTED FROM THE GROUP CONSISTING OF IRON, MOLYBDENUM, VANADIUM, TITANIUM, TANTALUM, COLUMBIUM, CHROMIUM, MANGANESE, NICKEL, TUNGSTEN, BORON AND THE RARE EARTH ELEMENTS, MIXTURES OF SAID COMPOUNDS WITH ALUMINUM OXIDE, AND MIXTURES OF SAID COMPOUNDS WITH SAID STRENGTHENING METALS AND ALUMINUM OXIDE, SAID INORGANIC OXYGEN BEARING COMPOUND COMPRISING AT LEAST 5 PARTS BY WEIGHT OF SAID COMPOSITION.
Claim 2
Dependent Claim
168 words
A METALLURGICAL COMPOSITION FOR USE IN THE PRODUCTION OF STRUCTURAL MATERIAL CAPABLE OF UNUSUAL STRENGTH AND HARDNESS UP TO ABOUT 1200*F. COMPRISING AN INTIMATE FINELY DIVIDED MIXTURE CONSISTING OF 75 TO 95 PARTS BY WEIGHT OF A METALLIC BASE SELECTED FROM THE GROUP CONSISTING OF ALUMINUM AND ALLOYS OF ALUMINUM, AND 25 TO 5 PARTS BY WEIGHT OF AN ADDITIVE SELECTED FROM THE GROUP CONSISTING OF THE INORGANIC OXYGEN BEARING COMPOUNDS OF A METAL SELECTED FROM THE GROUP CONSISTING OF MAGNESIUM, TITANIUM, VANADIUM, CHROMIUM, ZIRCONIUM, LANTHANUM, CERIUM AND PRASEODYMIUM, WHICH COMOUNDS DO NOT CONTAIN ANY NON-METAL OTHER THAN OXYGEN MIXTURES OF SAID COMPOUNDS, MIXTURES OF SAID COMOUNDS WITH ALUMINUM ALLOY STRENGTHENING METALS SELECTED FROM THE GROUP CONSISTING OF IRON, MOLYBDENUM, VANADIUM, TITANIUM, TANTALUM, COLUMBIUM, CHROMIUM, MANGANESE, NICKEL, TUNGSTEN, BORON AND THE RARE EARTH ELEMENTS, MIXTURES OF SAID COMPOUNDS WITH ALUMINUM OXIDE, AND MIXTURES OF SAID COMPOUNDS WITH SAID STRENGTHENING METALS AND ALUMINUM OXIDE, SAID INORGANIC OXYGEN BEARING COMPOUND COMPRISING AT LEAST 5 PARTS BY WEIGHT OF SAID COMPOSITION.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-30 | 1961-12-30 | 1962-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-30 | 1965-12-30 | 1966-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-30 | 1969-12-30 | 1970-07-01 | $7700.00 | Window Closed / Lapsed |