US3229505A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Paper chromatography
Assignee: Phillips Petroleum Co
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Filing: 1963-04-01
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Granted: 1966-01-18
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Expires: 1983-04-01
Abstract
No abstract record available.
Inventors
- 👤 Richard A Sanford
- 👤 Buell O Ayers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 11:55
CPC Classifications
G; G01; G01N; G01N30/00; G01N30/90; G01N30/94; G01N30/95
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
118 words
A CHROMATROGRAPHIC ANAYLZER COMPRISING A TURNTABLE HAVING A COVER WITH AN OPENING ADJACENT THE PERIPHERY; MEANS TO ROTATE SAID TURNTABLE AT A SELECTED SPEED; A TROUGH TO SECURE A STRIP OF PAPER, EXTENDING FROM A POINT ADJACENT THE CENTER OF SAID TURNTABLE TO THE PERIPHERY OF THE TURNTABLE; MEANS TO INTRODUCE A FIRST LIQUID THROUGH SAID COVER TO THE END OF THE TROUGH ADJACENT THE CENTER OF THE TURNTABLE; MEANS TO INTRODUCE A SECOND LIQUID THROUGH SAID COVER TO THE TROUGH ADJACENT AND SPACED FROM THE INTRODUCTION OF THE FIRST LIQUID; AND MEANS TO DETECT AND MEASURE OPTICAL PROPERTIES OF THE LIQUIDS PASSING A LOCUS OF THE TROUGH SPACED FROM AND ADJACENT THE PERIPHERAL END OF THE TROUGH.
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) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |