US3904366A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the quantitative elementary analysis of preferably organic substances
Assignee: Individual
•
Filing: 1972-11-17
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Granted: 1975-09-09
•
Expires: 1992-11-17
Abstract
Abstract A method of quantitatively determining the chemical composition of a substance by contacting the latter with a gas which has been excited by exposure to high-frequency discharge to thereby convert the components of the substance into gaseous compounds which may be measured quantitatively by an analytical method.
Inventors
- 👤 Fritz Grasenick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:42
CPC Classifications
G; G01; G01N; G01N31/00; G01N31/002; G01N31/005
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
84 words
A METHOD FOR QUANTITATIVELY DETERMINING THE CHEMICAL COMPOSITION OF A SAMPLE SUBSTANCE COMPRISING THE STEPS OF: SELECTING A GAS FROM THE GROUP CONSISTING OF HYDROGEN AND OXYGEN, DIRCETING SAID GAS TO SAMPLE AREAS DEFINED BY MEANS OF MECHANICAL DIAPHRAGMS, ACTIVATING SAID GAS BY MEANS OF AN ELECTRICAL DISCHARGE AT A SUB-ATMOSPHERIC PRESSURE, CONVERTING THE PORTIONS OF THE SAMPLE AT SAID AREAS INTO GASEOUS COMPOUNDS BY COMBINING THE SAME WITH THE ACTIVATED GAS, AND THEREAFTER QUANTITATIVELY DETERMINING SAID CHEMICAL COMPOSITION BY ANALYZING SAID GASEOUS COMPOUNDS.
Claim 2
Independent Claim
84 words
A METHOD FOR QUANTITATIVELY DETERMINING THE CHEMICAL COMPOSITION OF A SAMPLE SUBSTANCE COMPRISING THE STEPS OF: SELECTING A GAS FROM THE GROUP CONSISTING OF HYDROGEN AND OXYGEN, DIRCETING SAID GAS TO SAMPLE AREAS DEFINED BY MEANS OF MECHANICAL DIAPHRAGMS, ACTIVATING SAID GAS BY MEANS OF AN ELECTRICAL DISCHARGE AT A SUB-ATMOSPHERIC PRESSURE, CONVERTING THE PORTIONS OF THE SAMPLE AT SAID AREAS INTO GASEOUS COMPOUNDS BY COMBINING THE SAME WITH THE ACTIVATED GAS, AND THEREAFTER QUANTITATIVELY DETERMINING SAID CHEMICAL COMPOSITION BY ANALYZING SAID GASEOUS COMPOUNDS.
Claim 3
Dependent Claim
24 words
A method as set forth in claim 1, wherein said sample is screened off against the effects of the electric fields activating the gas.
References Cited (Backward Citations)
US3342715A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-08 | 1979-03-10 | 1979-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-08 | 1983-03-10 | 1983-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-08 | 1987-03-10 | 1987-09-09 | $7700.00 | Window Closed / Lapsed |