US2974226A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultraviolet analyzer
Assignee: Phillips Petroleum Co
•
Filing: 1957-11-01
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Granted: 1961-03-07
•
Expires: 1977-11-01
Abstract
No abstract record available.
Inventors
- 👤 Horace L Fisher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:47
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/17; G01N21/25; G01N21/31; G01N21/33
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
40 words
AN ANALYZER ADPATED TO DETECT THE PRESENCE OF BENZENE AND TOLUENE COMPRISING A SOURCE OF ULTRAVIOLET RADIATION, A DETECTOR RESPONSIVE TO ULTRAVIOLET RADIATION, A SAMPLE CELL; A FIRST FILTER COMPRISING AN AQUEOUS SOLUTION OF NICKEL SULFATE (NISO46H2O) AND COBALT SULFATE
Claim 2
Dependent Claim
40 words
AN ANALYZER ADPATED TO DETECT THE PRESENCE OF BENZENE AND TOLUENE COMPRISING A SOURCE OF ULTRAVIOLET RADIATION, A DETECTOR RESPONSIVE TO ULTRAVIOLET RADIATION, A SAMPLE CELL; A FIRST FILTER COMPRISING AN AQUEOUS SOLUTION OF NICKEL SULFATE (NISO46H2O) AND COBALT SULFATE
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-03-06 | 1964-09-05 | 1965-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-03-06 | 1968-09-05 | 1969-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-03-06 | 1972-09-05 | 1973-03-07 | $7700.00 | Window Closed / Lapsed |