Patent US3408604A successfully refreshed from Google Patents.
US3408604A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Superconducting alloys and apparatus for generating superconducting magnetic field
Assignee: Hitachi Ltd
•
Filing: 1967-03-06
•
Granted: 1968-10-29
•
Expires: 1987-03-06
Abstract
No abstract record available.
Inventors
- 👤 Doi Toshio
- 👤 Mitani Masao
- 👤 Kobayashi Masaru
- 👤 Ohara Hideharu
- 👤 Maeda Seijiro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:13
CPC Classifications
H; H10; H10N; H10N60/00; H10N60/80; H10N60/85; C; C22; C22C; C22C16/00; C22C27/00; C22C27/02; H01; H01F; H01F6/00; H01F6/06; Y; Y10; Y10S; Y10S420/00; Y10S420/901; Y10S505/00; Y10S505/80; Y10S505/801; Y10S505/803; Y10S505/805; Y10S505/806; Y10S505/825; Y10S505/879
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2985531A
Cited
US3038798A
Cited
US3253191A
Cited
US3215569A
Cited
US3266950A
Cited
US3268373A
Cited
US3303065A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-10-29 | 1972-04-29 | 1972-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-29 | 1976-04-29 | 1976-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-29 | 1980-04-29 | 1980-10-29 | $7700.00 | Window Closed / Lapsed |