Patent US3143720A successfully refreshed from Google Patents.
US3143720A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Superconductive transformer
Assignee: SPACE TECHNOLOGY LAB Inc
•
Filing: 1961-03-02
•
Granted: 1964-08-04
•
Expires: 1981-03-02
Abstract
No abstract record available.
Inventors
- 👤 John L Rogers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:46
CPC Classifications
H; H01; H01F; H01F36/00; G; G11; G11C; G11C11/00; G11C11/21; G11C11/44; Y; Y02; Y02E; Y02E40/00; Y02E40/60; Y10; Y10S; Y10S336/00; Y10S336/01; Y10S505/00; Y10S505/825; Y10S505/869; Y10S505/87; Y10S505/88
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
SUPERCONDUCTIVE TRANSFORMER, COMPRISING: A GENERALLY ANNULAR SHEATH OF SUPERCONDUCTIVE MATERIAL, SAID SHEATH BEING CONTINUOUS ALONG ITS ANNULAR EXTENT, SAID SHEATH BEING GNERALLY ANNULAR IN CROSS SECTION, WITH AT LEAST ONE DISCONTINUITY IN THE MATERIAL ALONG ITS CROSS SECTIONAL ANNULAR EXTENT, INPUT MEANS COUPLED TO SAID SHEATH FOR ESTABLISHING MAGNETIC FLUX WITHIN THE VOLUME SURROUNDED BY SAID SHEATH, AND OUTPUT MEANS COUPLED TO SAID SHEATH FOR EXTRACTING ENERGY FROM SAID MAGNETIC FLUX.
Claim 2
Dependent Claim
71 words
SUPERCONDUCTIVE TRANSFORMER, COMPRISING: A GENERALLY ANNULAR SHEATH OF SUPERCONDUCTIVE MATERIAL, SAID SHEATH BEING CONTINUOUS ALONG ITS ANNULAR EXTENT, SAID SHEATH BEING GNERALLY ANNULAR IN CROSS SECTION, WITH AT LEAST ONE DISCONTINUITY IN THE MATERIAL ALONG ITS CROSS SECTIONAL ANNULAR EXTENT, INPUT MEANS COUPLED TO SAID SHEATH FOR ESTABLISHING MAGNETIC FLUX WITHIN THE VOLUME SURROUNDED BY SAID SHEATH, AND OUTPUT MEANS COUPLED TO SAID SHEATH FOR EXTRACTING ENERGY FROM SAID MAGNETIC FLUX.
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) | 1967-08-04 | 1968-02-03 | 1968-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-04 | 1972-02-03 | 1972-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-04 | 1976-02-03 | 1976-08-04 | $7700.00 | Window Closed / Lapsed |