US2397818A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for concentrating colloidal dispersions
Assignee: American Anode Inc
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Filing: 1944-11-06
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Granted: 1946-04-02
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Expires: 1964-11-06
Abstract
No abstract record available.
Inventors
- 👤 Harry W Tausch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:37
CPC Classifications
B; B29; B29B; B29B13/00; B29B13/06; B29K; B29K2021/00; Y; Y10; Y10S; Y10S528/00; Y10S528/931; Y10S528/934; Y10S528/937
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) | 1949-04-01 | 1949-10-01 | 1950-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1953-04-01 | 1953-10-01 | 1954-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1957-04-01 | 1957-10-01 | 1958-04-02 | $7700.00 | Window Closed / Lapsed |