Patent US1341601A successfully refreshed from Google Patents.
US1341601A
Expired / Lapsed
US
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Purification of zinc solutions
Assignee: METALS EXTRACTION Corp Ltd
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Filing: 1919-05-12
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Granted: 1920-05-25
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Expires: 1939-05-12
Abstract
No abstract record available.
Inventors
- 👤 Sulman Henry Livingstone
- 👤 Field Samuel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 22:43
CPC Classifications
C; C22; C22B; C22B19/00; C22B19/20; C22B19/26; C01; C01G; C01G9/00; C01G9/06; C25; C25C; C25C1/00; C25C1/16; 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) | 1923-05-25 | 1923-11-24 | 1924-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1927-05-25 | 1927-11-24 | 1928-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1931-05-25 | 1931-11-24 | 1932-05-25 | $7700.00 | Window Closed / Lapsed |