US3410540A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Vapor-liquid contact system and method
Assignee: Union Carbide Corp
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Filing: 1964-11-09
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Granted: 1968-11-12
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Expires: 1984-11-09
Abstract
No abstract record available.
Inventors
- 👤 Bruckert Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:28
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/14; B01D3/16; B01D3/22; B08; B08B; B08B15/00; B08B15/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA617942A
Cited
US1605263A
Cited
AT139095B
Cited
DE627942C
Cited
US2319814A
Cited
US2646977A
Cited
GB823108A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-11-12 | 1972-05-13 | 1972-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-11-12 | 1976-05-13 | 1976-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-11-12 | 1980-05-13 | 1980-11-12 | $7700.00 | Window Closed / Lapsed |