US3124425A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Richelsen
Assignee: —
•
Filing: —
•
Granted: 1964-03-10
•
Expires: 1981-03-10
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:44
CPC Classifications
B; B01; B01J; B01J6/00; B01J12/00; B01J12/005; C; C22; C22B; C22B34/00; C22B34/10; C22B34/12; C22B34/1218; C22B34/1222; F; F27; F27D; F27D11/00; F27D11/02; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A GAS HEATING DEVICE COMPRISING A POROUS DIFFUSION SECTION OF CARBON HAVING A CAVITY THEREIN HAVING AN ENTRANCE ON THE EXTERIOR THEREOF, A TUBULAR CARBON ELECTRODE SECTION ELECTRICALLY JOINED TO SAID DIFFUSION SECTION ADJACENT THE ENTRANCE TO SAID CAVITY, AND A SOLID CARBON ELECTRODE SECTION ELECTRICALLY JOINED TO SAID DIFFUSION SECTION AT A POINT REMOVED FROM SAID ENTRANCE, SAID ELECTRODE SECTIONS HAVING LOWER RESISTANCE THAN SAID DIFFUSION SECTION AND BEING ADAPTED FOR SEPARATE CONNECTION TO A SOURCE OF ELECTRICAL CURRENT.
Claim 2
Dependent Claim
80 words
A GAS HEATING DEVICE COMPRISING A POROUS DIFFUSION SECTION OF CARBON HAVING A CAVITY THEREIN HAVING AN ENTRANCE ON THE EXTERIOR THEREOF, A TUBULAR CARBON ELECTRODE SECTION ELECTRICALLY JOINED TO SAID DIFFUSION SECTION ADJACENT THE ENTRANCE TO SAID CAVITY, AND A SOLID CARBON ELECTRODE SECTION ELECTRICALLY JOINED TO SAID DIFFUSION SECTION AT A POINT REMOVED FROM SAID ENTRANCE, SAID ELECTRODE SECTIONS HAVING LOWER RESISTANCE THAN SAID DIFFUSION SECTION AND BEING ADAPTED FOR SEPARATE CONNECTION TO A SOURCE OF ELECTRICAL CURRENT.
References Cited (Backward Citations)
US1339225A
Cited
US1880306A
Cited
US2237503A
Cited
US2447809A
Cited
US2378675A
Cited
US2436282A
Cited
US2790703A
Cited
US2708156A
Cited
US2855273A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-03-10 | 1967-09-09 | 1968-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-03-10 | 1971-09-09 | 1972-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-03-10 | 1975-09-09 | 1976-03-10 | $7700.00 | Window Closed / Lapsed |