US3364656A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for effecting countercurrent contacting of gas and liquid streams
Assignee: Universal Oil Products Co
•
Filing: 1964-12-16
•
Granted: 1968-01-23
•
Expires: 1984-12-16
Abstract
No abstract record available.
Inventors
- 👤 Louis C Whiton
- 👤 Petersen Alfred Arnold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:17
CPC Classifications
B; B01; B01D; B01D47/00; B01D47/06; B01J; B01J19/00; B01J19/30; B01J2219/00; B01J2219/30; B01J2219/302; B01J2219/30207; B01J2219/304; B01J2219/30408; B01J2219/30466; Y; Y10; Y10S; Y10S261/00; Y10S261/72
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US598351A
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US1796501A
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GB526609A
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US2253261A
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US2639909A
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US3122594A
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US3219324A
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FR1345847A
Cited
US3266787A
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US3233660A
Cited
US3171820A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-22 | 1971-07-24 | 1972-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-22 | 1975-07-24 | 1976-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-22 | 1979-07-24 | 1980-01-23 | $7700.00 | Window Closed / Lapsed |