US2944626A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Degassing fluids
Assignee: PPG Industries Inc
•
Filing: 1957-04-25
•
Granted: 1960-07-12
•
Expires: 1977-04-25
Abstract
No abstract record available.
Inventors
- 👤 Henry H Douglas
- 👤 Edward H Follwell
- 👤 Robert R Tiefenthaler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:42
CPC Classifications
B; B01; B01D; B01D19/00; B01D19/0021
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1145047A
Cited
US1575287A
Cited
GB393094A
Cited
DE713602C
Cited
US2404468A
Cited
US2668598A
Cited
US2714938A
Cited
US2748886A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-07-12 | 1964-01-11 | 1964-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-12 | 1968-01-11 | 1968-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-12 | 1972-01-11 | 1972-07-12 | $7700.00 | Window Closed / Lapsed |