US3328280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrically conductive cermet compositions
Assignee: Reynolds Metals Co
•
Filing: 1964-04-07
•
Granted: 1967-06-27
•
Expires: 1984-04-07
Abstract
No abstract record available.
Inventors
- 👤 Richards Nolan Earle
- 👤 Jr James Simmons Berry
- 👤 Johnston Thomas Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:30
CPC Classifications
C; C04; C04B; C04B35/00; C04B35/622; C04B35/64; C04B35/645; C04B35/515; C04B35/58; C04B35/5805; C04B35/58064; C04B35/58071; C04B35/581; C22; C22C; C22C29/00; C22C29/14; C25; C25C; C25C3/00; C25C3/06; C25C3/16; H; H01; H01B; H01B1/00; B; B22; B22F; B22F2998/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
AN ELECTROLYTIC CELL FOR THE PRODUCTION OF ALUMINUM, HAVING A CATHODE COMPRISING A SOLID CONTACT ELEMENT CONSISTING ESSENTIALLY OF A COMPRESSED MIXTURE OF FROM ABOUT 25% TO ABOUT 60% BY WEIGHT OF ALUMINUM NITRIDE, FROM ABOUT 40% TO ABOUT 60% OF TITANIUM DIBORIDE, AND UP TO ABOUT 15% ALUMINUM.
Claim 2
Dependent Claim
49 words
AN ELECTROLYTIC CELL FOR THE PRODUCTION OF ALUMINUM, HAVING A CATHODE COMPRISING A SOLID CONTACT ELEMENT CONSISTING ESSENTIALLY OF A COMPRESSED MIXTURE OF FROM ABOUT 25% TO ABOUT 60% BY WEIGHT OF ALUMINUM NITRIDE, FROM ABOUT 40% TO ABOUT 60% OF TITANIUM DIBORIDE, AND UP TO ABOUT 15% ALUMINUM.
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) | 1970-06-26 | 1970-12-26 | 1971-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-26 | 1974-12-26 | 1975-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-26 | 1978-12-26 | 1979-06-27 | $7700.00 | Window Closed / Lapsed |