US3173785A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Colored metal and method of making it
Assignee: United States Steel Corp
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Filing: 1963-07-17
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Granted: 1965-03-16
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Expires: 1983-07-17
Abstract
No abstract record available.
Inventors
- 👤 Samuel J Manganello
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:25
CPC Classifications
C; C22; C22C; C22C33/00; C22C33/02; C22C33/0207
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
A METHOD OF MAKING A SINTERED ORNAMENTAL PRODUCT COMPRISING MIXING IN PERCENT BY VOLUME BETWEEN ABOUT 60% AND 80% OF A METAL POWDER, BETWEEN ABOUT 20% AND 40% OF COLORED-COMPOUND POWDER, SAID COMPOUND BEING CHOSEN FROM THE GROUP CONSISTING OF METAL OXIDES, CARBIDES, NITRIDES AND MIXTURES THEREOF HAVING A MORE NEGATIVE FREE ENERGY OF FORMATION AT THE SINTERING TEMPERATURE THAN SAID METAL POWDER AND LESS THAN ABOUT 10% OF A BINDER, COMPACTING SAID ADMIXTURE, SINTERING SAID ADMIXTURE AT A TEMPERATURE BETWEEN ABOUT 1500* AND 2200*F. IN AN ATMOSPHERE COMPRISED PRINCIPALLY OF INERT GASES CHOSEN FROM THE GROUP CONSISTING OF ARGON, NITROGEN, HELIUM CONTAINING NOT MORE THAN ABOUT 5% HYDROGEN MAINTAINING THE DEW POINT OF SAID ATMOSPHERE BETWEEN ABOUT -20*F. AND 20*F., AND THEN COOLING THE SINTERED PRODUCT IN SAID ATMOSPHERE TO PRODUCE A SINTERED PRODUCT WHEREIN COLORED SPECKS OF SAID COMPOUND ARE UNIFORMLY DISPERSED THROUGHOUT THE METALLIC, SILVER-COLORED MATRIX AND CONTRAST IN COLOR THEREWITH.
Claim 2
Independent Claim
154 words
A METHOD OF MAKING A SINTERED ORNAMENTAL PRODUCT COMPRISING MIXING IN PERCENT BY VOLUME BETWEEN ABOUT 60% AND 80% OF A METAL POWDER, BETWEEN ABOUT 20% AND 40% OF COLORED-COMPOUND POWDER, SAID COMPOUND BEING CHOSEN FROM THE GROUP CONSISTING OF METAL OXIDES, CARBIDES, NITRIDES AND MIXTURES THEREOF HAVING A MORE NEGATIVE FREE ENERGY OF FORMATION AT THE SINTERING TEMPERATURE THAN SAID METAL POWDER AND LESS THAN ABOUT 10% OF A BINDER, COMPACTING SAID ADMIXTURE, SINTERING SAID ADMIXTURE AT A TEMPERATURE BETWEEN ABOUT 1500* AND 2200*F. IN AN ATMOSPHERE COMPRISED PRINCIPALLY OF INERT GASES CHOSEN FROM THE GROUP CONSISTING OF ARGON, NITROGEN, HELIUM CONTAINING NOT MORE THAN ABOUT 5% HYDROGEN MAINTAINING THE DEW POINT OF SAID ATMOSPHERE BETWEEN ABOUT -20*F. AND 20*F., AND THEN COOLING THE SINTERED PRODUCT IN SAID ATMOSPHERE TO PRODUCE A SINTERED PRODUCT WHEREIN COLORED SPECKS OF SAID COMPOUND ARE UNIFORMLY DISPERSED THROUGHOUT THE METALLIC, SILVER-COLORED MATRIX AND CONTRAST IN COLOR THEREWITH.
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) | 1968-03-15 | 1968-09-14 | 1969-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-15 | 1972-09-14 | 1973-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-15 | 1976-09-14 | 1977-03-16 | $7700.00 | Window Closed / Lapsed |