Patent US3274408A successfully refreshed from Google Patents.
US3274408A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High temperature anisotropic nonconsumable electrode
Assignee: Avco Corp
•
Filing: 1963-05-14
•
Granted: 1966-09-20
•
Expires: 1983-05-14
Abstract
No abstract record available.
Inventors
- 👤 Jean F Louis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:57
CPC Classifications
H; H02; H02K; H02K44/00; H02K44/08; H02K44/10
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
90 words
AN ELECTRODE FOR CONDUCTING ELECTRICAL CURRENT IN AN MHD DEVICE BETWEEN A CONDUCTOR AND A HOT ELECTRICALLYCONDUCTIVE GAS HAVING A TEMPERATURE OF ABOUT 2000* F. COMPRISING: (A) AN ELONGATED AND RELATIVELY NARROW ELECTRICALLY CONDUCTIVE METALLIC MEMBER HAVING AT LEAST ONE RECESS EXTENDING SUBSTANTIALLY THE LENGTH OF SAID MEMBER; AND (B) A HEAT RESISTANT FILLER MATERIAL ELECTRICALLY CONDUCTIVE AT THE OPERATING TEMPERATURE OF SAID GAS AND AN INSULATOR AT A TEMPERATURE SUBSTANTIALLY LESS THAN THE SAID OPERATING TEMPERATURE OF SAID GAS FIXEDLY DISPOSED IN SAID RECESS AND EXPOSED TO SAID GAS.
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) | 1969-09-19 | 1970-03-21 | 1970-09-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-19 | 1974-03-21 | 1974-09-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-19 | 1978-03-21 | 1978-09-20 | $7700.00 | Window Closed / Lapsed |