US3293076A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of forming a superconductor
Assignee: National Research Corp
•
Filing: 1962-04-17
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Granted: 1966-12-20
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Expires: 1982-04-17
Abstract
No abstract record available.
Inventors
- 👤 Lloyd R Allen
- 👤 John G Rupp
- 👤 Robert A Stauffer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 02:03
CPC Classifications
H; H01; H01F; H01F6/00; H01F6/06; C; C23; C23C; C23C10/00; C23C10/28; C23C2/00; C23C2/04; C23C2/08; H10; H10N; H10N60/00; H10N60/01; H10N60/0184; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/93; Y10S428/9335; Y10S428/934; Y10S428/939; Y10S505/00; Y10S505/80; Y10S505/812; Y10S505/813; Y10S505/815; Y10S505/818; Y10S505/819; Y10S505/825; Y10S505/917; Y10S505/918; Y10S505/919
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US410313A
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US592703A
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CA524312A
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US2997524A
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US3091556A
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US3181936A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |