US2776820A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas-liquid contacting system
Assignee: Houdry Process Corp
•
Filing: 1952-01-02
•
Granted: 1957-01-08
•
Expires: 1972-01-02
Abstract
No abstract record available.
Inventors
- 👤 Jr George R Bond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:48
CPC Classifications
B; B01; B01F; B01F23/00; B01F23/20; B01F23/23; B01F23/232; B01F23/2322
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US607417A
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US1319274A
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US771406A
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GB146397A
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US1703747A
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NL31631C
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US1968698A
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AT143057B
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US2020850A
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US2077907A
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US2717774A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-08 | 1960-07-09 | 1961-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-08 | 1964-07-09 | 1965-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-08 | 1968-07-09 | 1969-01-08 | $7700.00 | Window Closed / Lapsed |