US1480439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of sulphide and oxidized ores
Assignee: Individual
•
Filing: 1920-07-16
•
Granted: 1924-01-08
•
Expires: 1940-07-16
Abstract
No abstract record available.
Inventors
- 👤 Hamilton Henry John Edmund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:42
CPC Classifications
C; C22; C22B; C22B11/00; C22B11/06; C22B1/00; C22B1/02; C22B1/08; C22B13/00; C22B13/02; C22B13/04; C22B13/06; C22B13/08; C22B19/00; C22B19/02; C22B19/20; C22B19/22; C22B19/26; C22B3/00; C22B3/04; C22B3/06; C22B3/10; C22B3/20; C22B3/44; C22B3/46; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1927-01-07 | 1927-07-09 | 1928-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1931-01-07 | 1931-07-09 | 1932-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1935-01-07 | 1935-07-09 | 1936-01-08 | $7700.00 | Window Closed / Lapsed |