US3542529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal bonded alumina-carbide compositions
Assignee: EIDP Inc
•
Filing: 1968-06-14
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Granted: 1970-11-24
•
Expires: 1988-06-14
Abstract
No abstract record available.
Inventors
- 👤 Horacio E Bergna
- 👤 Alma U Daniels
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:03
CPC Classifications
C; C22; C22C; C22C29/00; C22C29/12; C04; C04B; C04B35/00; C04B35/71; Y; Y10; Y10S; Y10S75/00; Y10S75/95; Y10S75/951
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) | 1973-11-23 | 1974-05-25 | 1974-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-23 | 1978-05-25 | 1978-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-23 | 1982-05-25 | 1982-11-24 | $7700.00 | Window Closed / Lapsed |