Patent US4479681A successfully refreshed from Google Patents.
Patent US3290144A successfully refreshed from Google Patents.
US3290144A
Expired / Lapsed
US
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Process for improving the mechanical properties of copper using a refractory dispersed filler
Assignee: EIDP Inc
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Filing: 1963-03-28
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Granted: 1966-12-06
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Expires: 1983-03-28
Abstract
No abstract record available.
Inventors
- 👤 Ralph K Iler
- 👤 William H Pasfield
- 👤 Paul C Yates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:54
CPC Classifications
C; C22; C22C; C22C32/00; C22C32/001; C22C32/0015; C22C32/0021
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
IN A PROCESS FOR PRODUCING COPPER HAVING IMPROVED HIGH-TEMPERATURE STRENGTH THE STEPS COMPRISING DEPOSITING A HYDROUS, OXYGEN-CONTAINING COPPER COMPOUND UPON A WATER-INSOLUBLE REFRACTORY FILLER, THE FILLER BEING IN THE FORM OF PARTICLES, INSOLUBLE IN COPPER, HAVING AN AVERAGE SIZE BELOW 1000 MILLIMICRONS AND A MELTING POINT ABOVE 1000*C. AND BEING A METAL OXIDE HAVING A FREE ENERGY OF FORMATION AT 1000* C. OF FROM 30 TO 150 KCAL. PER MOLE PER OXYGEN ATOM IN THE OXIDE, AND THE VOLUME LOADING OF FILLER BEING ABOUT FROM 0.05% TO 20% CALCULATED ON THE AMOUNT OF COPPER IN THE DEPOSITED OXIDE, AND THEREAFTER REDUCING THE DEPOSITED COATING TO METALLIC COPPER WHILE MAINTAINING THE TEMPERATURE IN THE RANGE FROM 200 TO 500* C. THROUGHOUT THE ENTIRE MASS, AND COMPACTING THE REDUCED PRODUCT TO A DENSE MASS OF METAL HAVING THE FILTER DISPERSED THEREIN AND HAVING AN APPARENT DENSITY WHICH IS FROM 90 TO 100% OF THE ABSOLUTE DENSITY.
Claim 2
Dependent Claim
154 words
IN A PROCESS FOR PRODUCING COPPER HAVING IMPROVED HIGH-TEMPERATURE STRENGTH THE STEPS COMPRISING DEPOSITING A HYDROUS, OXYGEN-CONTAINING COPPER COMPOUND UPON A WATER-INSOLUBLE REFRACTORY FILLER, THE FILLER BEING IN THE FORM OF PARTICLES, INSOLUBLE IN COPPER, HAVING AN AVERAGE SIZE BELOW 1000 MILLIMICRONS AND A MELTING POINT ABOVE 1000*C. AND BEING A METAL OXIDE HAVING A FREE ENERGY OF FORMATION AT 1000* C. OF FROM 30 TO 150 KCAL. PER MOLE PER OXYGEN ATOM IN THE OXIDE, AND THE VOLUME LOADING OF FILLER BEING ABOUT FROM 0.05% TO 20% CALCULATED ON THE AMOUNT OF COPPER IN THE DEPOSITED OXIDE, AND THEREAFTER REDUCING THE DEPOSITED COATING TO METALLIC COPPER WHILE MAINTAINING THE TEMPERATURE IN THE RANGE FROM 200 TO 500* C. THROUGHOUT THE ENTIRE MASS, AND COMPACTING THE REDUCED PRODUCT TO A DENSE MASS OF METAL HAVING THE FILTER DISPERSED THEREIN AND HAVING AN APPARENT DENSITY WHICH IS FROM 90 TO 100% OF THE ABSOLUTE DENSITY.
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) | 1969-12-05 | 1970-06-06 | 1970-12-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-05 | 1974-06-06 | 1974-12-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-05 | 1978-06-06 | 1978-12-06 | $7700.00 | Window Closed / Lapsed |