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US2636819A Expired / Lapsed US ⏱️ 0.0 years remaining

Grain stabilizing metals and alloys

Assignee: Baker and Co Inc
•
Filing: 1951-01-31
•
Granted: 1953-04-28
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Expires: 1971-01-31
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Abstract

No abstract record available.

Inventors

  • 👤 Johann S Streicher

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-10-28 21:04
CPC Classifications
C; C22; C22C; C22C5/00; C22C32/00; C22C32/001; C22C32/0015; C22C32/0021

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 164 words
IN A PROCESS FOR PRODUCING A GRAIN STABILIZED METAL CHOSEN FROM THE GROUP CONSISTING OF PLATINUM, IRIDIUM, OSMIUM, PALLADIUM, RHODIUM, RUTHENIUM, AND MIXTURES OF THESE METALS, THE STEPS COMPRISING FUSING THE METAL IN THE ABSENCE OF A FLUXING AGENT, INCORPORATING INTO SAID FUSED METAL IN A NON-OXIDIZING ATMOSPHERE AN ELEMENT CAPABLE OF FORMING ON OXIDATION AT THE FUSION TEMPERATURE OF SAID METAL A NON-VOLATILE CHEMICALLY STABLE OXIDE IN AN AMOUNT WHICH WILL RESULT IN THE FORMATION OF BETWEEN APPROXIMATELY 0.02 TO 2.5 GRAM EQUIVALENTS OF THE OXIDE OF SAID ELEMENT PER LITER OF SAID METAL, EFFECTING AN EVEN DISTRIBUTION OF SAID ELEMENT IN SAID FUSED METAL IN THE PRESENCE OF THE NON-OXIDIZING ATMOSMOSPHERE, REPLACING THE NON-OXIDIZING ATMOSPHERE IN CONTACT WITH SAID FUSED METAL BY AN OXIDIZING ATMOSPHERE WHILE SAID METAL IS MAINTAINED IN THE FUSED STATE, THEREBY CONVERTING SAID ELEMENT TO THE OXIDE AND PRODUCING A COLLOIDAL DISPERSION OF THE OXIDE OF SAID ELEMENT IN SAID FUSED METAL WHICH ACTS AS THE DISPERSION MEDIUM.
Claim 2
Dependent Claim 164 words
IN A PROCESS FOR PRODUCING A GRAIN STABILIZED METAL CHOSEN FROM THE GROUP CONSISTING OF PLATINUM, IRIDIUM, OSMIUM, PALLADIUM, RHODIUM, RUTHENIUM, AND MIXTURES OF THESE METALS, THE STEPS COMPRISING FUSING THE METAL IN THE ABSENCE OF A FLUXING AGENT, INCORPORATING INTO SAID FUSED METAL IN A NON-OXIDIZING ATMOSPHERE AN ELEMENT CAPABLE OF FORMING ON OXIDATION AT THE FUSION TEMPERATURE OF SAID METAL A NON-VOLATILE CHEMICALLY STABLE OXIDE IN AN AMOUNT WHICH WILL RESULT IN THE FORMATION OF BETWEEN APPROXIMATELY 0.02 TO 2.5 GRAM EQUIVALENTS OF THE OXIDE OF SAID ELEMENT PER LITER OF SAID METAL, EFFECTING AN EVEN DISTRIBUTION OF SAID ELEMENT IN SAID FUSED METAL IN THE PRESENCE OF THE NON-OXIDIZING ATMOSMOSPHERE, REPLACING THE NON-OXIDIZING ATMOSPHERE IN CONTACT WITH SAID FUSED METAL BY AN OXIDIZING ATMOSPHERE WHILE SAID METAL IS MAINTAINED IN THE FUSED STATE, THEREBY CONVERTING SAID ELEMENT TO THE OXIDE AND PRODUCING A COLLOIDAL DISPERSION OF THE OXIDE OF SAID ELEMENT IN SAID FUSED METAL WHICH ACTS AS THE DISPERSION MEDIUM.

References Cited (Backward Citations)

US2406172A Cited
GB594837A Cited
GB611813A Cited
US2539298A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1956-04-27 1956-10-27 1957-04-28 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1960-04-27 1960-10-27 1961-04-28 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1964-04-27 1964-10-27 1965-04-28 $7700.00 Window Closed / Lapsed

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