US3534459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Composite superconducting elements
Assignee: Hitachi Ltd
•
Filing: 1967-03-31
•
Granted: 1970-10-20
•
Expires: 1987-03-31
Abstract
No abstract record available.
Inventors
- 👤 Mitsuhiro Kudo
- 👤 Toshio Doi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:18
CPC Classifications
H; H10; H10N; H10N60/00; H10N60/01; H10N60/0156; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/93; Y10S505/00; Y10S505/80; Y10S505/812; Y10S505/813; Y10S505/815; Y10S505/818; Y10S505/825; Y10S505/917; Y10S505/918; Y10S505/919; Y10T; Y10T29/00; Y10T29/49; Y10T29/49002; Y10T29/49014; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12632; Y10T428/12708; Y10T428/12771; Y10T428/12806; Y10T428/12812
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1973-10-19 | 1974-04-20 | 1974-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-10-19 | 1978-04-20 | 1978-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-10-19 | 1982-04-20 | 1982-10-20 | $7700.00 | Window Closed / Lapsed |