US3399050A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of nickel powder
Assignee: Viridian Inc Canada
•
Filing: 1965-02-23
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Granted: 1968-08-27
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Expires: 1985-02-23
Abstract
No abstract record available.
Inventors
- 👤 David J I Evans
- 👤 Kunda Wasyl
- 👤 Hancock Herbert Arthur
- 👤 Mackiw Vladimir Nicolaus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:42
CPC Classifications
B; B22; B22F; B22F9/00; B22F9/16; B22F9/18; B22F9/20; B22F9/22; B22F9/24; B22F9/26; C; C22; C22B; C22B23/00; C22B23/04; C22B23/0453; C22B23/0461; E; E04; E04B; E04B1/00; E04B1/38; E04B1/41; E04B1/4114; E04B1/4142; H; H01; H01M; H01M4/00; H01M4/02; H01M4/64; H01M4/70; H01M4/80; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2734821A
Cited
US2853374A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-27 | 1972-02-26 | 1972-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-27 | 1976-02-26 | 1976-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-27 | 1980-02-26 | 1980-08-27 | $7700.00 | Window Closed / Lapsed |