Patent US3271671A successfully refreshed from Google Patents.
US3271671A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Particle analyzing device
Assignee: Coulter Electronics Inc
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Filing: 1965-08-16
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Granted: 1966-09-06
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Expires: 1985-08-16
Abstract
No abstract record available.
Inventors
- 👤 Wallace H Coulter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:30
CPC Classifications
G; G01; G01N; G01N15/00; G01N15/10; G01N15/1031; G01N15/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
216 words
A PARTICLE ANALYZER, FOR STUDYING PARTICLES SUSPENDED IN A FLUID, COMPRISING: (A) FLUID SUSPENDED PARTICLE SCANNING MEANS FOR GENERATING ELECTRIC SCANNER SIGNALS, EACH SIGNAL HAVING A PARAMETER WHICH IS A FUNCTION OF A PHYSICAL PROPERTY OF A RESPECTIVE SCANNED PARTICLE, INCORPORATING (I) A PAIR OF SCANNER ELECTRODES, (II) MEANS FOR METERING IN VOLUME OF FLUID SCANNED DURING THE PERIOD OF AN ANALYTIC RUN, (III) MEANS FOR GENERATING A START SIGNAL AT THE BEGINNING OF AN ANALYTIC RUN AND (IV) MEANS FOR GENERATING A STOP SIGNAL AT THE END OF AN ANALYTIC RUN; (B) MEANS FOR ANALYZING THE SCANNER SIGNALS; (C) MANUALLY OPERABLE SIGNAL GENERATING MEANS; (D) MEANS FOR ENERGIZING THE SCANNER ELECTRODES IN RESPONSE TO A SIGNAL RECEIVED FROM THE MANUALLY OPERABLE SIGNAL GENERATING MEANS AND FOE DE-ENERGIZING THE SCANNER ELECTRODES IN RESPONSE TO A STOP SIGNAL RECEIVED FROM THE STOP SIGNAL GENERATING MEANS; AND (E) MEANS FOR ACTIVATING THE ANALYZING MEANS IN RESPONSE TO A SIGNAL RECEIVED FROM THE START SIGNAL GENERATING MEANS WHEREBY STHE GENERATION OF A START SIGNAL CAUSES ACTIVATION OF THE ANALYZING MEANS AND THE GENERATION OF A STOP SIGNAL CAUSED DE-ENERGIZATION OF THE SCANNER ELECTRODES SO THAT THE SCANNER ELECTRODES ARE ENERGIZED ONLY BEFORE AND DURING THE PERIOD OF AN ANALYTIC RUN WHEN A METERED VOLUME OF FLUID IS BEING SCANNED.
Claim 2
Dependent Claim
216 words
A PARTICLE ANALYZER, FOR STUDYING PARTICLES SUSPENDED IN A FLUID, COMPRISING: (A) FLUID SUSPENDED PARTICLE SCANNING MEANS FOR GENERATING ELECTRIC SCANNER SIGNALS, EACH SIGNAL HAVING A PARAMETER WHICH IS A FUNCTION OF A PHYSICAL PROPERTY OF A RESPECTIVE SCANNED PARTICLE, INCORPORATING (I) A PAIR OF SCANNER ELECTRODES, (II) MEANS FOR METERING IN VOLUME OF FLUID SCANNED DURING THE PERIOD OF AN ANALYTIC RUN, (III) MEANS FOR GENERATING A START SIGNAL AT THE BEGINNING OF AN ANALYTIC RUN AND (IV) MEANS FOR GENERATING A STOP SIGNAL AT THE END OF AN ANALYTIC RUN; (B) MEANS FOR ANALYZING THE SCANNER SIGNALS; (C) MANUALLY OPERABLE SIGNAL GENERATING MEANS; (D) MEANS FOR ENERGIZING THE SCANNER ELECTRODES IN RESPONSE TO A SIGNAL RECEIVED FROM THE MANUALLY OPERABLE SIGNAL GENERATING MEANS AND FOE DE-ENERGIZING THE SCANNER ELECTRODES IN RESPONSE TO A STOP SIGNAL RECEIVED FROM THE STOP SIGNAL GENERATING MEANS; AND (E) MEANS FOR ACTIVATING THE ANALYZING MEANS IN RESPONSE TO A SIGNAL RECEIVED FROM THE START SIGNAL GENERATING MEANS WHEREBY STHE GENERATION OF A START SIGNAL CAUSES ACTIVATION OF THE ANALYZING MEANS AND THE GENERATION OF A STOP SIGNAL CAUSED DE-ENERGIZATION OF THE SCANNER ELECTRODES SO THAT THE SCANNER ELECTRODES ARE ENERGIZED ONLY BEFORE AND DURING THE PERIOD OF AN ANALYTIC RUN WHEN A METERED VOLUME OF FLUID IS BEING SCANNED.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-09-05 | 1970-03-07 | 1970-09-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-09-05 | 1974-03-07 | 1974-09-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-09-05 | 1978-03-07 | 1978-09-06 | $7700.00 | Window Closed / Lapsed |