US2423746A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the evaporation and concentration of liquids
Assignee: Hurd Corp
•
Filing: 1943-05-31
•
Granted: 1947-07-08
•
Expires: 1963-05-31
Abstract
No abstract record available.
Inventors
- 👤 George G Zahm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:09
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/10
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US48268A
Cited
US1189127A
Cited
US1730892A
Cited
US2098961A
Cited
US2104415A
Cited
US2156212A
Cited
US2145395A
Cited
US2155971A
Cited
US2217261A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-07-07 | 1951-01-06 | 1951-07-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-07-07 | 1955-01-06 | 1955-07-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-07-07 | 1959-01-06 | 1959-07-08 | $7700.00 | Window Closed / Lapsed |