US3493470A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Volatile components by vaporization while maintaining the desired rate of vaporization by overhead flow control
Assignee: Phillips Petroleum Co
•
Filing: 1966-05-27
•
Granted: 1970-02-03
•
Expires: 1986-05-27
Abstract
No abstract record available.
Inventors
- 👤 Howard B Irvin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 01:52
CPC Classifications
B; B01; B01D; B01D3/00; B01D3/42; B01D3/4211; Y; Y10; Y10S; Y10S203/00; Y10S203/19; Y10S585/00; Y10S585/949; Y10S585/956
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2732414A
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US2974130A
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US2886616A
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GB881565A
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US3024171A
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US2988894A
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US3229471A
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US3240023A
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US3266260A
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US3318102A
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US3359185A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1973-02-02 | 1973-08-04 | 1974-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-02-02 | 1977-08-04 | 1978-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-02-02 | 1981-08-04 | 1982-02-03 | $7700.00 | Window Closed / Lapsed |