US3000087A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sintered tungsten carbide alloy product
Assignee: Western Alloy Products Co
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Filing: 1959-05-01
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Granted: 1961-09-19
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Expires: 1979-05-01
Abstract
No abstract record available.
Inventors
- 👤 Charles H Dyer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:47
CPC Classifications
C; C22; C22C; C22C29/00; C22C29/02; C22C29/06; C22C29/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A SINTERED TUNGSTEN CARBIDE PRODUCT FOR USE IN EARTH DRILLING TOOLS CONSISTING OF FROM 30% TO 100% OF CRUSHED AND GROUND PARTICLES OF A FUSED ALLOY OF TUNGSTEN CARBIDE HAVING THE APPROXIMATE FORMULA W2C AND COBALT IN THE AMOUNT OF 1% TO 3%, AND FROM 0% TO 70% OF PARTICLES OF CARBURIZED TUNGSTEN HAVING THE APPROXIMATE FORMULA WC, BONDED TOGETHER BY A LOWER MELTING POINT METALILIC MATERIAL COMPRISING FROM 5% TO 30% OF SAID PARTICLES AND SELECTED FROM THE GROUP CONSISTING OF COBALT, NICKEL, IRON AND ALLOYS THEREOF.
Claim 2
Dependent Claim
88 words
A SINTERED TUNGSTEN CARBIDE PRODUCT FOR USE IN EARTH DRILLING TOOLS CONSISTING OF FROM 30% TO 100% OF CRUSHED AND GROUND PARTICLES OF A FUSED ALLOY OF TUNGSTEN CARBIDE HAVING THE APPROXIMATE FORMULA W2C AND COBALT IN THE AMOUNT OF 1% TO 3%, AND FROM 0% TO 70% OF PARTICLES OF CARBURIZED TUNGSTEN HAVING THE APPROXIMATE FORMULA WC, BONDED TOGETHER BY A LOWER MELTING POINT METALILIC MATERIAL COMPRISING FROM 5% TO 30% OF SAID PARTICLES AND SELECTED FROM THE GROUP CONSISTING OF COBALT, NICKEL, IRON AND ALLOYS THEREOF.
References Cited (Backward Citations)
US1959879A
Cited
US2170433A
Cited
US2170432A
Cited
US1950355A
Cited
US1973428A
Cited
US2246166A
Cited
US2731711A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-09-18 | 1965-03-20 | 1965-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-18 | 1969-03-20 | 1969-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-18 | 1973-03-20 | 1973-09-19 | $7700.00 | Window Closed / Lapsed |