Patent US2546657A successfully refreshed from Google Patents.
US2657129A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminum-alloyed corrosion-resistant metal powders and related products and processes
Assignee: American Electro Metal Corp
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Filing: 1950-03-31
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Granted: 1953-10-27
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Expires: 1970-03-31
Abstract
No abstract record available.
Inventors
- 👤 Stern George
- 👤 Seymour J Sindeband
- 👤 Joseph P Scanlan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:27
CPC Classifications
B; B22; B22F; B22F9/00; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/938; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12181
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
175 words
A SINTERED CAKE BODY OF METAL POWDER PARTICLES WHICH IS READILY COMMINUTABLE INTO SOFT METAL POWDER PARTICLES, THE PARTICLES OF SAID CAKE BODY BEING COMPOSED ESSENTIALLY OF AT LEAST ONE METAL OF THE GROUP CONSISTING OF IRON CONTAINING AT MOST ABOUT .2% CARBON, OF NICKLE, AND OF COBALT, AND MIXTURES AND ALLOYS OF SAID METALS, SAID CAKE BODY HAVING BEEN SUBJECTED TO AN ALUMINUM-ALLOYING TREATMENT CAUSING AT LEAST THE SURFACE LAYER OF SAID PARTICLES TO BECOME ALLOYED WITH ALUMINUM DEPOSITED ON THE PARTICLES FROM AN ALUMINUM COMPOUND AT ELEVATED TEMPERATURES IN WHICH AT LEAST 3% OF THE METAL OF SAID BODY IS DISPLACED BY ALUMINUM-ALLOYED POWDER PARTICLES AT MOST A DENSITY OF ABOUT 5 GRAMS PER CUBIC CENTIMETER, WHEREBY SAID BODY MAY BE PULVERIZED INTO MINUTE ALUMINUM-ALLOYED POWDER PARTICLES WHICH EXHIBIT MINIMIZED WORK HARDNESS AND SUFFICIENTLY GREAT SOFTNESS SO THAT WHEN THE ALUMINUM-ALLOYED PARTICLES ARE COMPACTED INTO A GREEN BODY UNDER PRESSURE OF ABOUT 50,000 POUNDS PER SQUARE INCH, SAID GREEN BODY EXHIBIT A MODULUS OF RUPTURE OF AT LEAST 200 POUNDS PER SQUARE INCH
Claim 2
Dependent Claim
175 words
A SINTERED CAKE BODY OF METAL POWDER PARTICLES WHICH IS READILY COMMINUTABLE INTO SOFT METAL POWDER PARTICLES, THE PARTICLES OF SAID CAKE BODY BEING COMPOSED ESSENTIALLY OF AT LEAST ONE METAL OF THE GROUP CONSISTING OF IRON CONTAINING AT MOST ABOUT .2% CARBON, OF NICKLE, AND OF COBALT, AND MIXTURES AND ALLOYS OF SAID METALS, SAID CAKE BODY HAVING BEEN SUBJECTED TO AN ALUMINUM-ALLOYING TREATMENT CAUSING AT LEAST THE SURFACE LAYER OF SAID PARTICLES TO BECOME ALLOYED WITH ALUMINUM DEPOSITED ON THE PARTICLES FROM AN ALUMINUM COMPOUND AT ELEVATED TEMPERATURES IN WHICH AT LEAST 3% OF THE METAL OF SAID BODY IS DISPLACED BY ALUMINUM-ALLOYED POWDER PARTICLES AT MOST A DENSITY OF ABOUT 5 GRAMS PER CUBIC CENTIMETER, WHEREBY SAID BODY MAY BE PULVERIZED INTO MINUTE ALUMINUM-ALLOYED POWDER PARTICLES WHICH EXHIBIT MINIMIZED WORK HARDNESS AND SUFFICIENTLY GREAT SOFTNESS SO THAT WHEN THE ALUMINUM-ALLOYED PARTICLES ARE COMPACTED INTO A GREEN BODY UNDER PRESSURE OF ABOUT 50,000 POUNDS PER SQUARE INCH, SAID GREEN BODY EXHIBIT A MODULUS OF RUPTURE OF AT LEAST 200 POUNDS PER SQUARE INCH
References Cited (Backward Citations)
GB598181A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-10-26 | 1957-04-27 | 1957-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-10-26 | 1961-04-27 | 1961-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-10-26 | 1965-04-27 | 1965-10-27 | $7700.00 | Window Closed / Lapsed |