US3926558A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for measuring conversion efficiency of catalysts
Assignee: Individual
•
Filing: 1973-07-05
•
Granted: 1975-12-16
•
Expires: 1993-07-05
Abstract
Abstract The efficiency of a catalyst in converting hydrocarbons to carbon dioxide and water is determined by passing hydrocarbon fumes, mixed with air, over a substrate coated with the catalyst and measuring an electrical potential between two points spaced apart in the direction of gas flow. The magnitude of the electrical potential thus developed is representative of the conversion efficiency of the catalyst for a given fuel mixture and air flow rate.
Inventors
- 👤 Robert E Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:38
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/403; G01N27/406; G01N27/407; G01N27/4065; G01N31/00; G01N31/10; H; H01; H01M; H01M8/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
40 words
A METHOD OF MEASURING THE HYDROCARBON CONVERSION EFFICIENCY OF A CATALYST SYSTEM ON A SUBSTRATE COMPRISING: PASSING A GASEOUS HYDROCARBON FUEL MIXTURE ALONG SAID CATALYST-BEARING SUBSTRATE, AND MEASURING AN ELECTRICAL SIGNAL AT SPACED LOCATION OOF DIFFERENT TEMPERATURE ON SAID SUBSTRATE,
Claim 2
Independent Claim
40 words
A METHOD OF MEASURING THE HYDROCARBON CONVERSION EFFICIENCY OF A CATALYST SYSTEM ON A SUBSTRATE COMPRISING: PASSING A GASEOUS HYDROCARBON FUEL MIXTURE ALONG SAID CATALYST-BEARING SUBSTRATE, AND MEASURING AN ELECTRICAL SIGNAL AT SPACED LOCATION OOF DIFFERENT TEMPERATURE ON SAID SUBSTRATE,
Claim 3
Dependent Claim
24 words
The method of claim 1 wherein said step of measuring comprises measuring the voltage at said locations spaced in the direction of gas flow.
Claim 4
Dependent Claim
24 words
The method of claim 1 wherein said step of measuring comprises measuring the current at said locations spaced in the direction of gas flow.
Claim 5
Independent Claim
62 words
A method of indicating the conversion efficiency of a catalyst system on a substrate for oxidizing a gas containing hydrocarbons and carbon monoxide comprising: passing said gas along said substrate; and measuring an electrical signal between two locations spaced apart on said substrate, said spaced locations being at different temperatures, said signal being a measure of the conversion efficiency of said catalyst.
Claim 6
Independent Claim
62 words
A method of indicating the conversion efficiency of a catalyst system on a substrate for oxidizing a gas containing hydrocarbons and carbon monoxide comprising: passing said gas along said substrate; and measuring an electrical signal between two locations spaced apart on said substrate, said spaced locations being at different temperatures, said signal being a measure of the conversion efficiency of said catalyst.
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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) | 1978-12-15 | 1979-06-16 | 1979-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-15 | 1983-06-16 | 1983-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-15 | 1987-06-16 | 1987-12-16 | $7700.00 | Window Closed / Lapsed |