US2636819A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grain stabilizing metals and alloys
Assignee: Baker and Co Inc
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Filing: 1951-01-31
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Granted: 1953-04-28
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Expires: 1971-01-31
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)
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 |