US3238367A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for the analysis of a fluent material by bombarding the same with photoelectrons
Assignee: Beckman Coulter Inc
•
Filing: 1963-02-20
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Granted: 1966-03-01
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Expires: 1983-02-20
Abstract
No abstract record available.
Inventors
- 👤 James C Sternberg
- 👤 David T L Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:04
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/62; G01N27/64; G01N27/66; G01N27/68; G01N27/70; G01N30/00; G01N30/02; G01N30/62; G01N30/64; G01N30/70
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
IN A DETECTOR USEFUL IN A GAS CHROMATOGRAPH, THE COMBINATION OF: MEANS DEFINING A FIRST CHAMBER; MEANS DEFINING A SECOND CHAMBER AND INCLUDING AN ANODE; AN APERTURED CATHODE POSITIONED BETWEEN SAID CHAMBERS; A LIGHT SOURCE IN SAID FIRST CHAMBER FOR DIRECTING LIGHT ONTO SAID CATHODE AND RELEASING PHOTOELECTRONS FROM SAID CATHODE IN SAID SECOND CHAMBER; MEANS FOR CONNECTING SAID CATHODE AND ANODE IN SERIES CIRCUIT WHEN A VOLTAGE SOURCE; MEANS FOR CONNECTING A MEASURING CIRCUIT INCLUDING AN AMPLIFIER TO SAID SERIES CIRCUIT; AND MEANS FOR FLOWING A SAMPLE THROUGH SAID SECOND CHAMBER FOR INTERACTION WITH SAID PHOTOELECTRONS TO MODIFY THE COLLECTION AT SAID ANODE AND CATHODE.
Claim 2
Dependent Claim
106 words
IN A DETECTOR USEFUL IN A GAS CHROMATOGRAPH, THE COMBINATION OF: MEANS DEFINING A FIRST CHAMBER; MEANS DEFINING A SECOND CHAMBER AND INCLUDING AN ANODE; AN APERTURED CATHODE POSITIONED BETWEEN SAID CHAMBERS; A LIGHT SOURCE IN SAID FIRST CHAMBER FOR DIRECTING LIGHT ONTO SAID CATHODE AND RELEASING PHOTOELECTRONS FROM SAID CATHODE IN SAID SECOND CHAMBER; MEANS FOR CONNECTING SAID CATHODE AND ANODE IN SERIES CIRCUIT WHEN A VOLTAGE SOURCE; MEANS FOR CONNECTING A MEASURING CIRCUIT INCLUDING AN AMPLIFIER TO SAID SERIES CIRCUIT; AND MEANS FOR FLOWING A SAMPLE THROUGH SAID SECOND CHAMBER FOR INTERACTION WITH SAID PHOTOELECTRONS TO MODIFY THE COLLECTION AT SAID ANODE AND CATHODE.
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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) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |