Patent US2889224A successfully refreshed from Google Patents.
US2889224A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of metal strip from metal powder
Assignee: Huntington Alloys Corp
•
Filing: 1956-07-18
•
Granted: 1959-06-02
•
Expires: 1976-07-18
Abstract
No abstract record available.
Inventors
- 👤 Evans Evelyn May
- 👤 Bishop Gwladys Maud
- 👤 Worn David Kenneth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:53
CPC Classifications
B; B22; B22F; B22F3/00; B22F3/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
THE METHOD FOR PRODUCING BY DIRECT ROLLING A SUBSTANTIALLY NON-POROUS THIN METAL STRIP FROM CARBONYL NICKEL POWDER WHICH COMPRISES ESTABLISHING A MIXTURE CONTAINING ABOUT 5% TO 75% BY WEIGHT OF A CARBONYL NICKEL POWDER HAVING A BULK DENSITY BETWEEN ABOUT 0.6 AND 1.4 GRAMS PER CUBIC CENTIMETER AND CHARACTERIZED BY A FIBROUS STRUCTURE AND POOR FLOW PROPERTIES AND ABOUT 95% TO 25% BY WEIGHT OF A CARBONYL NICKEL POWDER HAVING A BULK DENSITY BETWEEN ABOUT 2 AND 2.6 GRAMS PER CUBIC CENTIMERTER AND CHARACTERIZED BY BEING IN THE FORM OF DISCRETE PARTICLES; PASSING SAID MIXTURE OF CARBONYL NICKEL POWDER THROUGH COMPACTING ROLLS HAVING A DIAMETER BETWEEN ABOUT 2 INCHES AND ABOUT 4 INCHES TO PRODUCE A COMPACTED METAL STRIP OF UNIFORM STRUCTURE AND HAVING A THICKNESS OF ABOUT 0.004 INCH TO 0.010 INCH, SAID COM-
Claim 2
Independent Claim
135 words
THE METHOD FOR PRODUCING BY DIRECT ROLLING A SUBSTANTIALLY NON-POROUS THIN METAL STRIP FROM CARBONYL NICKEL POWDER WHICH COMPRISES ESTABLISHING A MIXTURE CONTAINING ABOUT 5% TO 75% BY WEIGHT OF A CARBONYL NICKEL POWDER HAVING A BULK DENSITY BETWEEN ABOUT 0.6 AND 1.4 GRAMS PER CUBIC CENTIMETER AND CHARACTERIZED BY A FIBROUS STRUCTURE AND POOR FLOW PROPERTIES AND ABOUT 95% TO 25% BY WEIGHT OF A CARBONYL NICKEL POWDER HAVING A BULK DENSITY BETWEEN ABOUT 2 AND 2.6 GRAMS PER CUBIC CENTIMERTER AND CHARACTERIZED BY BEING IN THE FORM OF DISCRETE PARTICLES; PASSING SAID MIXTURE OF CARBONYL NICKEL POWDER THROUGH COMPACTING ROLLS HAVING A DIAMETER BETWEEN ABOUT 2 INCHES AND ABOUT 4 INCHES TO PRODUCE A COMPACTED METAL STRIP OF UNIFORM STRUCTURE AND HAVING A THICKNESS OF ABOUT 0.004 INCH TO 0.010 INCH, SAID COM-
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) | 1962-06-01 | 1962-12-01 | 1963-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-01 | 1966-12-01 | 1967-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-01 | 1970-12-01 | 1971-06-02 | $7700.00 | Window Closed / Lapsed |