US2434190A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Purification of fluids with silvered resins
Assignee: Wyeth Holdings LLC
•
Filing: 1942-10-13
•
Granted: 1948-01-06
•
Expires: 1962-10-13
Abstract
No abstract record available.
Inventors
- 👤 Barnes Robert Bowling
- 👤 Ham Garnet Philip
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:32
CPC Classifications
A; A61; A61L; A61L2/00; A61L2/16; A61L2/23; A61L2/238
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US1642089A
Cited
US1988246A
Cited
US1978447A
Cited
US2008131A
Cited
GB427199A
Cited
US2066271A
Cited
US2198378A
Cited
US2285750A
Cited
US2251234A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-01-05 | 1951-07-07 | 1952-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-01-05 | 1955-07-07 | 1956-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-01-05 | 1959-07-07 | 1960-01-06 | $7700.00 | Window Closed / Lapsed |