US3265472A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metallic species sintered product of columbium or tantalum with ferromagnetic iron
Assignee: Cabot Berylco Inc
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Filing: 1965-01-19
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Granted: 1966-08-09
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Expires: 1985-01-19
Abstract
No abstract record available.
Inventors
- 👤 George J Nessle
- 👤 Robert E Droegkamp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 21:38
CPC Classifications
C; C22; C22C; C22C1/00; C22C1/04; C22C1/045; G; G01; G01N; G01N27/00; G01N27/02; G01N27/023; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/928
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A METALLIC SPECIES PRODUCT HAVING PHYSICAL, MECHANICAL AND ELECTRICAL PROPERTIES SUCH AS TO BE ACCEPTABLE TO THE TESTING ELEMENTS FOR SILVER-BASE COINS IN A COIN-OPERATED MACHINE, SAID PRODUCT CONSISTING ESSENTIALLY OF A POWDER-METALLURGICALLY PRESSED AND SINTERED MIXTURE OF A MAJOR PROPORTION OF A METAL POWDER OF THE GROUP CONSISTING OF COLUMBIUM AND TANTALUM POWDER AND A MINOR PROPORTION OF FERROMAGNETIC METAL POWDER FREE FROM DISSOLUTION IN THE COLUMBIUM OR TANTALUM.
Claim 2
Dependent Claim
70 words
A METALLIC SPECIES PRODUCT HAVING PHYSICAL, MECHANICAL AND ELECTRICAL PROPERTIES SUCH AS TO BE ACCEPTABLE TO THE TESTING ELEMENTS FOR SILVER-BASE COINS IN A COIN-OPERATED MACHINE, SAID PRODUCT CONSISTING ESSENTIALLY OF A POWDER-METALLURGICALLY PRESSED AND SINTERED MIXTURE OF A MAJOR PROPORTION OF A METAL POWDER OF THE GROUP CONSISTING OF COLUMBIUM AND TANTALUM POWDER AND A MINOR PROPORTION OF FERROMAGNETIC METAL POWDER FREE FROM DISSOLUTION IN THE COLUMBIUM OR TANTALUM.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-08 | 1970-02-07 | 1970-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-08 | 1974-02-07 | 1974-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-08 | 1978-02-07 | 1978-08-09 | $7700.00 | Window Closed / Lapsed |