US3385101A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chromatographic analyzer
Assignee: Phillips Petroleum Co
•
Filing: 1964-11-16
•
Granted: 1968-05-28
•
Expires: 1984-11-16
Abstract
No abstract record available.
Inventors
- 👤 Lewis B Roof
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 11:35
CPC Classifications
G; G01; G01N; G01N30/00; G01N30/02; G01N30/26; G01N30/38; G01N30/40; G01N30/28; G01N30/30; G01N2030/405; G01N30/46; G01N30/461
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1967185A
Cited
US3234779A
Cited
US3120749A
Cited
US3156548A
Cited
US3224499A
Cited
US3148532A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-28 | 1971-11-27 | 1972-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-28 | 1975-11-27 | 1976-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-28 | 1979-11-27 | 1980-05-28 | $7700.00 | Window Closed / Lapsed |