Patent US3149252A successfully refreshed from Google Patents.
US3149252A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric power generation
Assignee: General Electric Co
•
Filing: 1961-04-17
•
Granted: 1964-09-15
•
Expires: 1981-04-17
Abstract
No abstract record available.
Inventors
- 👤 Lapp Marshall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:07
CPC Classifications
H; H02; H02K; H02K44/00; H02K44/08
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
104 words
IN A MAGNETOHYDRODYNAMIC GENERATOR, THE COMBINATION COMPRISING MEASN DEFINING A FLOW PATH FOR A GASEOUS FLUID, MEANS FOR INJECTING INTO THE GASEOUS FLUID AN IONIZABLE FIRST MATERIAL AND A SECOND MATERIAL WHOSE ATOMS HAVE AT LEAST ONE METASTABLE ENERGY LEVEL COMPARABLE TO THE IONIZATION ENERGY LEVEL OF THE FIRST MATERIAL, IRRADIATION MEANS FOR RAISING THE ENERGY LEVEL OF THE ATOMS OF THE SECOND MATERIAL TO A LEVEL ABOVE THEIR METASTABLE LEVEL, AND MEANS FOR CAUSING THE ATOMS TO DROP TO THEIR METASTABLE LEVEL WHEREBY ATOMS OF THE FIRST MATERIAL ARE THEREAFTER IONIZED BY COLLISIONS WITH ATOMS OF THE SECOND MATERIAL IN THEIR METASTABLE LEVEL.
References Cited (Backward Citations)
US1717413A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-15 | 1968-03-16 | 1968-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-15 | 1972-03-16 | 1972-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-15 | 1976-03-16 | 1976-09-15 | $7700.00 | Window Closed / Lapsed |