US3295059A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Particle studying device pulse analyzer
Assignee: Coulter Electronics Inc
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Filing: 1965-06-28
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Granted: 1966-12-27
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Expires: 1985-06-28
Abstract
No abstract record available.
Inventors
- 👤 Wallace H Coulter
- 👤 Walter R Hogg
- 👤 Joseph P Moran
- 👤 William A Claps
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:26
CPC Classifications
G; G01; G01N; G01N15/00; G01N15/10; G01N15/1031; G01N15/12; G01N15/131; G01N15/132; H; H03; H03K; H03K21/00; H03K21/02; G01N2015/135; G01N2015/136
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
169 words
A PARTICLE STUDYING DEVICE FOR ANALYZING PARTICLES SUSPENDED IN A LIQUID, COMPRISING: (A) TRANSDUCER MEANS HAVING A LIQUID SUSPENDED PARTICLE SCANNING APPARATUS FOR GENERATING ELECTRICAL PULSES OF AMPLITUDES WHICH ARE A FUNCTION OF THE RESPECTIVE SIZES OF THE RESPECTIVE PARTICLES WHICH ARE SCANNED BY THE TRANSDUCER; (B) A LOWER EXPANDER AMPLIFIER HAVING AN INPUT CONNECTED TO THE TRANSDUCER OUTPUT; (C) LOWER THRESHOLD LEVEL SET MEANS FOR DETERMINING A LOWER THRESHOLD LEVEL, HAVING AN OUTPUT CONNECTED TO ANOTHER INPUT OF THE LOWER EXPANDER AMPLIFIER; (D) A LOWER THRESHOLD LIMITER HAVING AN INPUT CONNECTED TO THE LOWER EXPANDER AMPLIFIER OUTPUT; (E) DELAY UNIVIBRATOR MEANS TRIGGERED WHE THE HEIGHT OF A PULSE DROUPS BELOW THE LOWER THRESHOLD LEVEL FOR GENERATING AN ALLOW PULSE, HAVING AN INPUT CONNECTED TO THE OUTPUT OF THE LOWER THRESHOLD LIMITER; (F) AN UPPER EXPANDER AMPLIFIER HAVING AN INPUT CONNECTED TO THE TRANSDUCER OUTPUT; (G) UPPER THRESHOLD LEVEL SET MEANS FOR DETERMINING AN UPPER THRESHOLD LEVEL, HAVING AN OUTPUT CONNECTED TO ANOTHER INPUT OF THE UPPER EXPANDER AMPLIFIER;
Claim 2
Dependent Claim
169 words
A PARTICLE STUDYING DEVICE FOR ANALYZING PARTICLES SUSPENDED IN A LIQUID, COMPRISING: (A) TRANSDUCER MEANS HAVING A LIQUID SUSPENDED PARTICLE SCANNING APPARATUS FOR GENERATING ELECTRICAL PULSES OF AMPLITUDES WHICH ARE A FUNCTION OF THE RESPECTIVE SIZES OF THE RESPECTIVE PARTICLES WHICH ARE SCANNED BY THE TRANSDUCER; (B) A LOWER EXPANDER AMPLIFIER HAVING AN INPUT CONNECTED TO THE TRANSDUCER OUTPUT; (C) LOWER THRESHOLD LEVEL SET MEANS FOR DETERMINING A LOWER THRESHOLD LEVEL, HAVING AN OUTPUT CONNECTED TO ANOTHER INPUT OF THE LOWER EXPANDER AMPLIFIER; (D) A LOWER THRESHOLD LIMITER HAVING AN INPUT CONNECTED TO THE LOWER EXPANDER AMPLIFIER OUTPUT; (E) DELAY UNIVIBRATOR MEANS TRIGGERED WHE THE HEIGHT OF A PULSE DROUPS BELOW THE LOWER THRESHOLD LEVEL FOR GENERATING AN ALLOW PULSE, HAVING AN INPUT CONNECTED TO THE OUTPUT OF THE LOWER THRESHOLD LIMITER; (F) AN UPPER EXPANDER AMPLIFIER HAVING AN INPUT CONNECTED TO THE TRANSDUCER OUTPUT; (G) UPPER THRESHOLD LEVEL SET MEANS FOR DETERMINING AN UPPER THRESHOLD LEVEL, HAVING AN OUTPUT CONNECTED TO ANOTHER INPUT OF THE UPPER EXPANDER AMPLIFIER;
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) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |