Patent US1478337A successfully refreshed from Google Patents.
US1478337A
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Method of treating solutions to obtain solid constituents thereof separated in a coarse condition
Assignee: DE NORSKE SALTVERKER AS
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Filing: 1921-10-12
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Granted: 1923-12-18
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Expires: 1941-10-12
Abstract
No abstract record available.
Inventors
- 👤 Isaachsen Isak
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:21
CPC Classifications
B; B01; B01D; B01D9/00; B01D9/0004; B01D9/0018; B01D9/0036
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) | 1926-12-17 | 1927-06-18 | 1927-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1930-12-17 | 1931-06-18 | 1931-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1934-12-17 | 1935-06-18 | 1935-12-18 | $7700.00 | Window Closed / Lapsed |