US3247375A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas analysis method and device for the qualitative and quantitative analysis of classes of organic vapors
Assignee: Individual
•
Filing: 1960-12-23
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Granted: 1966-04-19
•
Expires: 1980-12-23
Abstract
No abstract record available.
Inventors
- 👤 James E Lovelock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:54
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/62; G01N27/64; G01N27/66
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
100 words
A METHOD FOR THE ANALYTICAL DETERMINATION OF VAPORIZABLE ORGANIC CHEMICAL SUBSTANCES WHICH COMPRISES PASSING THE SUBSTANCE IN VAPOR FORM IN AN INERT CARRIER GAS BETWEEN THE OPPOSED ELECTRODES OF AN IONIZATION CHAMBER, EXPOSING THE STREAM OF COMBINED CARRIER GAS AND VAPOR TO RADIATION OF A PREDETERMINED VALUE SUFFICIENT TO IONIZE THE GAS AND PROVIDE SATURATION CURRENTS PROMOTING FREE ELECTRON CAPTURE AT LOW ELECTRON ENERGY LEVELS WHILE PASSING BETWEEN THE ELECTRODES, APPLYING PREDETERMINED UNIDIRECTIONAL POTENTIALS ACROSS THE ELECTRODES AND MEASURING AND RECORDING THE RELATIVE CURRENT CARRIED BY IONIZATION-FORMED NEGATIVE IONS THROUGH SAID CHAMBER IN RESPONSE TO THE APPLICATION OF SAID POTENTIALS.
Claim 2
Independent Claim
100 words
A METHOD FOR THE ANALYTICAL DETERMINATION OF VAPORIZABLE ORGANIC CHEMICAL SUBSTANCES WHICH COMPRISES PASSING THE SUBSTANCE IN VAPOR FORM IN AN INERT CARRIER GAS BETWEEN THE OPPOSED ELECTRODES OF AN IONIZATION CHAMBER, EXPOSING THE STREAM OF COMBINED CARRIER GAS AND VAPOR TO RADIATION OF A PREDETERMINED VALUE SUFFICIENT TO IONIZE THE GAS AND PROVIDE SATURATION CURRENTS PROMOTING FREE ELECTRON CAPTURE AT LOW ELECTRON ENERGY LEVELS WHILE PASSING BETWEEN THE ELECTRODES, APPLYING PREDETERMINED UNIDIRECTIONAL POTENTIALS ACROSS THE ELECTRODES AND MEASURING AND RECORDING THE RELATIVE CURRENT CARRIED BY IONIZATION-FORMED NEGATIVE IONS THROUGH SAID CHAMBER IN RESPONSE TO THE APPLICATION OF SAID POTENTIALS.
Claim 3
Dependent Claim
106 words
APPARATUS FOR THE ANALYTICAL DETERMINATION OF VAPORIZABLE ORGANIC CHEMICAL SUBSTANCES COMPRISING AN IONIZATION CHAMBER INCLUDING SPACED ELECTRODES, INLET AND OUTLET MEANS FOR PASSING A STREAM OF COMBINED INERT CARRIER GAS AND VAPOR THROUGH SAID CHAMBER BETWEEN THE ELECTRODES, A SOURCE OF RADIATION WITHIN SAID CHAMBER OF A PREDETERMINED VALUE SUFFICIENT TO IONIZE THE GAS AND PROVIDE SATURATION CURRENTS PROMOTING FREE ELECTRON CAPTURE AT LOW ELECTRON ENERGY LEVELS, A SOURCE OF UNDIRECTIONAL POTENTIAL, AND CIRCUIT ELEMENTS CONNECTED ACROSS SAID SPACED ELECTRODES FOR APPLYING PREDETERMINED UNIDIRECTIONAL POTENTIALS FROM SAID SOURCE THERETO, SAID CIRCUIT ELEMENTS INCLUDING CURRENT MEASURING MEANS FOR MEASURING RELATIVE ELECTRICAL CURRENT CARRIED BY IONIZATION-FORMED NEGATIVE IONS.
Claim 4
Dependent Claim
106 words
APPARATUS FOR THE ANALYTICAL DETERMINATION OF VAPORIZABLE ORGANIC CHEMICAL SUBSTANCES COMPRISING AN IONIZATION CHAMBER INCLUDING SPACED ELECTRODES, INLET AND OUTLET MEANS FOR PASSING A STREAM OF COMBINED INERT CARRIER GAS AND VAPOR THROUGH SAID CHAMBER BETWEEN THE ELECTRODES, A SOURCE OF RADIATION WITHIN SAID CHAMBER OF A PREDETERMINED VALUE SUFFICIENT TO IONIZE THE GAS AND PROVIDE SATURATION CURRENTS PROMOTING FREE ELECTRON CAPTURE AT LOW ELECTRON ENERGY LEVELS, A SOURCE OF UNDIRECTIONAL POTENTIAL, AND CIRCUIT ELEMENTS CONNECTED ACROSS SAID SPACED ELECTRODES FOR APPLYING PREDETERMINED UNIDIRECTIONAL POTENTIALS FROM SAID SOURCE THERETO, SAID CIRCUIT ELEMENTS INCLUDING CURRENT MEASURING MEANS FOR MEASURING RELATIVE ELECTRICAL CURRENT CARRIED BY IONIZATION-FORMED NEGATIVE IONS.
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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) | 1969-04-18 | 1969-10-18 | 1970-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-18 | 1973-10-18 | 1974-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-18 | 1977-10-18 | 1978-04-19 | $7700.00 | Window Closed / Lapsed |