US3723077A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sintered alloys
Assignee: Deutsche Edelstahlwerke GmbH
•
Filing: 1970-04-21
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Granted: 1973-03-27
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Expires: 1990-04-21
Abstract
Abstract SINTERED ALLOYS ARE PREPARED CONSISTING OF 50 TO 90% OF (1) A HARD CARBIDE ALLOY CONTAINING 10 TO 70% TITANIUM CARBIDE AND 30 TO 90% STEEL ALLOY AND (2) 10 TO 50% CERAMIC WHICH IS INSOLUBLE IN THE MATRIX.
Inventors
- 👤 F Frehn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:29
CPC Classifications
C; C22; C22C; C22C29/00; C22C29/12; C22C29/02; C22C29/06; C22C29/067; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/923; Y10S428/924; Y10S428/926; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12063; Y10T428/12069
Claims Analysis
Total Claims: 0
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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) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |