Patent US3422665A successfully refreshed from Google Patents.
US3422665A
Expired / Lapsed
US
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Chromatography system
Assignee: ConocoPhillips Co
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Filing: 1966-08-01
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Granted: 1969-01-21
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Expires: 1986-08-01
Abstract
No abstract record available.
Inventors
- 👤 Donald J Haase
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:20
CPC Classifications
G; G01; G01N; G01N30/00; G01N30/02; G01N30/26; G01N30/38; G01N30/46; G01N30/461; G01N30/28; G01N30/32; G01N30/466
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA692119A
Cited
US3002583A
Cited
US3174326A
Cited
DE1130204B
Cited
DE1201093B
Cited
US3374607A
Cited
US3250057A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-21 | 1972-07-22 | 1973-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-21 | 1976-07-22 | 1977-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-21 | 1980-07-22 | 1981-01-21 | $7700.00 | Window Closed / Lapsed |