US4515274A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Particle analyzing and sorting apparatus
Assignee: Beckman Coulter Inc
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Filing: 1981-12-02
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Granted: 1985-05-07
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Expires: 2001-12-02
Abstract
Abstract Disclosed is a flow-through, particle analyzer and sorter apparatus for simultaneous optical and electrical impedance measurements on a stream of particles, comprising a flow cell having a pair of channels fluidly connected by a particle sensing aperture, through which the particles pass and are analyzed; a nozzle mounted at the end of the downstream channel so as to define a flow chamber; a sheath liquid which is introduced at the bottom of the flow chamber to hydrodynamically focus the particle stream and to jet the same in a liquid jet from the nozzle; and a system for creating droplets from the liquid jet and for thereafter sorting the droplets.
Inventors
- 👤 John D. Hollinger
- 👤 Raul I. Pedroso
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:21
CPC Classifications
G; G01; G01N; G01N15/00; G01N15/10; G01N15/1031; G01N15/12; G01N15/13; G01N15/14; G01N15/149; G01N2015/1019; G01N2015/1028; Y; Y10; Y10S; Y10S209/00; Y10S209/906
Claims Analysis
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References Cited (Backward Citations)
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US3710933A
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US3871770A
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US4014611A
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US4348107A
Cited
US4395676A
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-05-06 | 1988-11-05 | 1989-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-06 | 1992-11-05 | 1993-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-06 | 1996-11-05 | 1997-05-07 | $7700.00 | Window Closed / Lapsed |