US3301937A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid nitrogen cooled beryllium superconductor
Assignee: Pechiney SA
•
Filing: 1964-11-02
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Granted: 1967-01-31
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Expires: 1984-11-02
Abstract
No abstract record available.
Inventors
- 👤 Burnier Pierre
- 👤 Bonmarin Jacques
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:55
CPC Classifications
H; H02; H02K; H02K3/00; H02K3/04; H02K3/24; H01; H01B; H01B1/00; H01B1/02; H01F; H01F27/00; H01F27/28; H01F27/2876; H01F36/00; H01F6/00; H01F6/06; H01F7/00; H01F7/06; H01F7/20; H01F7/202; H02K3/02; H02K3/22; Y; Y02; Y02E; Y02E40/00; Y02E40/60; Y10; Y10S; Y10S505/00; Y10S505/825; Y10S505/884; Y10S505/885; Y10S505/886
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
52 words
IN AN ELECTRICAL DEVICE FOR THE PRODUCTION OF ELECTRICAL, MAGNETIC OR FOR THE CONVERSION OF ELECTRICAL ENERGY, A CONDUCTOR FORMED OF BERYLLIUM COOLED TO A TEMPERATURE BELOW 150%K, AND A LIQUID REFRIGERANT CIRCULATED IN HEAT EXCHANGE RELATIONSHIP WITH THE CONDUCTOR FOR COLLING THE BERYLLIUM CONDUCTOR TO A LOW TEMPERATURE BELOW 150% K.
Claim 2
Dependent Claim
52 words
IN AN ELECTRICAL DEVICE FOR THE PRODUCTION OF ELECTRICAL, MAGNETIC OR FOR THE CONVERSION OF ELECTRICAL ENERGY, A CONDUCTOR FORMED OF BERYLLIUM COOLED TO A TEMPERATURE BELOW 150%K, AND A LIQUID REFRIGERANT CIRCULATED IN HEAT EXCHANGE RELATIONSHIP WITH THE CONDUCTOR FOR COLLING THE BERYLLIUM CONDUCTOR TO A LOW TEMPERATURE BELOW 150% K.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-01-30 | 1970-08-01 | 1971-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-30 | 1974-08-01 | 1975-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-30 | 1978-08-01 | 1979-01-31 | $7700.00 | Window Closed / Lapsed |