Patent US3393046A successfully refreshed from Google Patents.
US3393046A
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Method for purification of zinc sulphate solutions
Assignee: TAIMURZ KHADZHIOMAROVICH TSEREKOV
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Filing: 1967-02-21
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Granted: 1968-07-16
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Expires: 1987-02-21
Abstract
No abstract record available.
Inventors
- 👤 Giganov Georgy Petrovich
- 👤 Pashkov Gennady Leonidovich
- 👤 Batjukov Mikhail Ivanovich
- 👤 Kulenov Akhat Salemkhatovich
- 👤 Tserekov Taim Khadzhiomarovich
- 👤 Pelymsky Georgy Arkadievich
- 👤 Porkhunov Alexandr Efimovich
- 👤 Pavlov Jury Ivanovich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 02:30
CPC Classifications
C; C22; C22B; C22B3/00; C22B3/20; C22B3/26; C22B3/28; C22B3/282; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 0
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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) | 1971-07-16 | 1972-01-15 | 1972-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-16 | 1976-01-15 | 1976-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-16 | 1980-01-15 | 1980-07-16 | $7700.00 | Window Closed / Lapsed |