US3609048A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self cleaning sample cell for radiant energy analyzers
Assignee: Beckman Coulter Inc
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Filing: 1969-11-25
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Granted: 1971-09-28
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Expires: 1989-11-25
Abstract
Abstract There is disclosed a self-cleaning flow-through sample cell through which a sample fluid is conducted for analysis in a radiant energy analyzer. A fluid-combining assembly is provided to establish laminar flow of a carrier fluid in a sheath around a core of sample fluid. A conduit is connected to the fluid combining assembly to conduct and maintain the laminar flow. Windows are provided in the walls of the conduit to establish a path for radiant energy used for analysis of the sample fluid core. The sheath of carrier fluid prevents contamination of the window areas by the sample fluid.
Inventors
- 👤 Allen Strickler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:05
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/01; G01N21/15; G01N21/03; G01N21/05
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2732753A
Cited
US3504183A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |