US3488291A
Expired / Lapsed
US
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Process and composition for the production of cemented metal carbides
Assignee: Cabot Corp
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Filing: 1968-04-09
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Granted: 1970-01-06
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Expires: 1988-04-09
Abstract
No abstract record available.
Inventors
- 👤 John F Hardy
- 👤 Merrill E Jordan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:08
CPC Classifications
C; C01; C01B; C01B32/00; C01B32/90; B; B22; B22F; B22F9/00; B82; B82Y; B82Y30/00; C01B13/00; C01B13/14; C01B13/18; C01B13/34; C22; C22C; C22C1/00; C22C1/02; C22C1/10; C22C1/1026; C01P; C01P2004/00; C01P2004/60; C01P2004/61; C01P2004/64; C01P2006/00; C01P2006/80; C01P2006/90; Y; Y10; Y10S; Y10S75/00; Y10S75/956
Claims Analysis
Total Claims: 0
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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) | 1973-01-05 | 1973-07-07 | 1974-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-01-05 | 1977-07-07 | 1978-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-01-05 | 1981-07-07 | 1982-01-06 | $7700.00 | Window Closed / Lapsed |