Patent US3429696A successfully refreshed from Google Patents.
US3429696A
Expired / Lapsed
US
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Iron powder infiltrant
Assignee: New Jersey Zinc Co
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Filing: 1966-08-05
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Granted: 1969-02-25
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Expires: 1986-08-05
Abstract
No abstract record available.
Inventors
- 👤 George L Werley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:45
CPC Classifications
C; C22; C22C; C22C33/00; C22C33/02; C22C33/0242; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/1216
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
AN INFILTRANT FOR IRON POWER COMPACTS HAVING A MELTING POINT LOWER THAN THAT OF IRON AND CAPABLE, WHEN MELTED IN CONTACT WITH AN IRON POWDER COMPACT AT A SINTRATION TEMPERATURE NOT IN EXCESS OF ABOUT 1100*C., OF INFILTRATING THE COMPACT WITHOUT PITTING THE SURFACE OF THE COMPACT AND WITHOUT LEAVING A RESIDUE ON THE SURFACE OF THE COMPACT, AND CONSISTING ESSENTIALLY OF 1.2 TO 1.8% BY WEIGHT OF COBALT, 1.6 TO 3.0% BY WEIGHT OF ZINC, AND THE BALANCE COPPER WITH THE AMOUNTS COBALT AND COPPER BEING SUBSTANTIALLY WITHIN THE BOUNDARIES OF THE CURVE ABCDEA IN FIG. 1 OF THE DRAWING.
Claim 2
Dependent Claim
101 words
AN INFILTRANT FOR IRON POWER COMPACTS HAVING A MELTING POINT LOWER THAN THAT OF IRON AND CAPABLE, WHEN MELTED IN CONTACT WITH AN IRON POWDER COMPACT AT A SINTRATION TEMPERATURE NOT IN EXCESS OF ABOUT 1100*C., OF INFILTRATING THE COMPACT WITHOUT PITTING THE SURFACE OF THE COMPACT AND WITHOUT LEAVING A RESIDUE ON THE SURFACE OF THE COMPACT, AND CONSISTING ESSENTIALLY OF 1.2 TO 1.8% BY WEIGHT OF COBALT, 1.6 TO 3.0% BY WEIGHT OF ZINC, AND THE BALANCE COPPER WITH THE AMOUNTS COBALT AND COPPER BEING SUBSTANTIALLY WITHIN THE BOUNDARIES OF THE CURVE ABCDEA IN FIG. 1 OF THE DRAWING.
References Cited (Backward Citations)
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Cited
US2146722A
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US2169188A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-02-25 | 1972-08-26 | 1973-02-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-02-25 | 1976-08-26 | 1977-02-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-02-25 | 1980-08-26 | 1981-02-25 | $7700.00 | Window Closed / Lapsed |