Patent US3857760A successfully refreshed from Google Patents.
US3857760A
Expired / Lapsed
US
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Process of measuring the concentration of a dissociatable component in a gas and apparatus therefor
Assignee: Bayer AG
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Filing: 1971-06-16
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Granted: 1974-12-31
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Expires: 1991-06-16
Abstract
Abstract In the measuring of a component of a gas stream in a measuring cell similar to a Nernst concentration cell with the gas stream being conducted past and in contact with the electrolyte and one of the electrodes, the electrolyte essentially comprises a solid, organic material of low vapor pressure, such as a mixture of benzoic acid and propylene carbonate.
Inventors
- 👤 W Breuer
- 👤 J Deprez
- 👤 B Sturm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:04
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/416; G01N27/4162
Claims Analysis
Total Claims: 31
Claim 1
Independent Claim
84 words
AN ELECTROYLIC CELL INSTRUMENT ADAPTED TO MEASURE THE CONCENTRATION OF A DISSOCIATABLE COMPONENT OF A GAS, OPERATING ON THE PRINCIPLE OF A NERNST CONCENTRATION CELL, CONSISTING ESSENTIALLY OF TWO ELECTRODES, AN ELECTROLYTE DISPOSED IN SAID CELL BETWEEN AND IN CONTACT WITH SAID ELECTRODES AND COMPRISING MEANS FOR PASSING THE GAS INTO CONTACT WITH THE ELECTROLYTE SO THAT THE GAS CAN BE DISSOCIATE, SAID ELECTROLYTE BEING AN ORGANIC SUBSTANCE OF SOLID CONSISTENCY AND BEING A NONAQUEOUS SYSTEM, FOR CONTACTING OF THE GAS WITH THE ORGANIC
Claim 2
Dependent Claim
84 words
AN ELECTROYLIC CELL INSTRUMENT ADAPTED TO MEASURE THE CONCENTRATION OF A DISSOCIATABLE COMPONENT OF A GAS, OPERATING ON THE PRINCIPLE OF A NERNST CONCENTRATION CELL, CONSISTING ESSENTIALLY OF TWO ELECTRODES, AN ELECTROLYTE DISPOSED IN SAID CELL BETWEEN AND IN CONTACT WITH SAID ELECTRODES AND COMPRISING MEANS FOR PASSING THE GAS INTO CONTACT WITH THE ELECTROLYTE SO THAT THE GAS CAN BE DISSOCIATE, SAID ELECTROLYTE BEING AN ORGANIC SUBSTANCE OF SOLID CONSISTENCY AND BEING A NONAQUEOUS SYSTEM, FOR CONTACTING OF THE GAS WITH THE ORGANIC
Claim 3
Dependent Claim
38 words
The instrument of claim 1, the electrolyte consisting essentially of a mixture of a carrier forming the solid structure of the electrolyte and being an organic substance, and an organic solvent for solving and dissociation of said component.
Claim 4
Dependent Claim
35 words
The instrument of claim 2, the carrier being benzoic acid, tuluic acid, crotonic acid, salicylic acid or a salt of one of said acids, the solvent being ethylene glycol, glycerol, propylene carbonate, or butylene carbonate.
Claim 5
Dependent Claim
17 words
The instrument of claim 3, wherein the carrier is benzoic acid and the solvent is propylene carbonate.
Claim 6
Dependent Claim
31 words
The instrument of claim 4, the proportion of carrier and solvent being 50 to 70 parts by weight benozic acid carrier and 50 to 30 parts by weight propylene carbonate solvent.
Claim 7
Dependent Claim
18 words
The instrument of claim 2, the electrolyte having a vapor pressure of less than 1 mm at 60*C.
Claim 8
Dependent Claim
17 words
The instrument of claim 6, said measuring means being for measuring The current flow between said electrodes.
Claim 9
Dependent Claim
36 words
The instrument according to claim 2, said electrolyte having a vapor pressure of less than 1 mm Hg at 60*C, and the means adapted to connect the electrodes comprising circuit having a resistance below 10 kiloohms.
Claim 10
Dependent Claim
33 words
The instrument according to claim 8, the electrolyte having a dielectric constant of more than 20 or a dipole moment of more than 2.0 Debye and a specific resistivity less than 105 ohm-cm.
Claim 11
Dependent Claim
43 words
The instrument of claim 1 wherein said electrolyte has a vapor pressure less than 1 mm Hg at 60*C, a dielectric constant of more than 20 or a dipole moment of more than 2.0 Debye and a specific resistivity less than 105 ohm-cm.
Claim 12
Dependent Claim
37 words
The instrument of claim 10, the electrolyte consisting essentially of a mixture of a carrier forming the solid structure of the electrolyte and being an organic substance, and an organic solvent for solving of said gas component.
Claim 13
Dependent Claim
35 words
The instrument of claim 11, the carrier being benzoic acid, tuluic acid, crotonic acid, salicylic acid or a salt of one of said acids, the solvent being ethylene glycol, glycerol, propylene carbonate, or butylene carbonate.
Claim 14
Dependent Claim
35 words
The instrument of claim 10 wherein said electrolyte consists essentially of in the range of 50 to 70 parts by weight of benzoic acid and 50 to 30 parts by weight of propylene carbonate (4-methyl-1,3-dioxolan-2-one).
Claim 15
Dependent Claim
17 words
The instrument of claim 1, said measuring means being for measuring the current flow between said electrodes.
Claim 16
Dependent Claim
19 words
The instrument of claim 14, said electrolyte having a vapor pressure of less than 1 mm Hg. at 60*C.
Claim 17
Dependent Claim
18 words
The instrument of claim 1, the electrolyte having a vapor pressure of less than 1 mm at 60*C.
Claim 18
Dependent Claim
44 words
The instrument according to claim 1, wherein said electrolyte has a vapor pressure less than 1 mm Hg at 60*C, a dielectric constant of more than 30 or a dipole moment of more than 3 Debye and a specific resistivity less than 106 ohm-cm.
Claim 19
Dependent Claim
61 words
The instrument according to claim 1, said electrolyte being enclosed within a container having an inlet opening and an outlet opening, and a passageway through the cell communicating with said inlet opening and outlet opening for passage of a stream of said gas through the cell and for contacting of the gas with the electrolyte upon passage thereof through the cell.
Claim 20
Dependent Claim
23 words
The instrument according to claim 1, the electrodes and organic electrolyte being the only means of the instrument for generation of electromotive force.
Claim 21
Dependent Claim
22 words
The instrument according to claim 1, the means adapted to connect the electrodes comprising a circuit having a resistance below 10 kiloohms.
Claim 22
Dependent Claim
37 words
The instrument according to claim 1, said electrolyte having a vapor pressure of less than 1 mm Hg at 60*C, and the means adapted to connect the electrodes comprising a circuit having a resistance below 10 kiloohms.
Claim 23
Dependent Claim
33 words
The instrument according to claim 1, the electrolyte having a dielectric constant of more than 20 or a dipole moment of more than 2.0 Debye and a specific resistivity less than 105 ohm-cm.
Claim 24
Dependent Claim
86 words
Process of measuring the concentration of a dissociatable component in a gas which comprises contacting the gas with the electrolyte of an electrolytic cell according to claim 1 for dissociating of said gas component in the electrolyte to an extent proportional to the concentration of the dissociatable component in the gas for generation of an electromotive force to an extent proportional to the concentration of the dissociatable component in the gas, and measuring said electromotive force as a measure of the dissociatable component in the gas.
Claim 25
Dependent Claim
39 words
Process according to claim 23, the electrolyte consisting essentially of a mixture of a carrier forming the solid structure of the electrolyte and being an organic substance, and an organic solvent for solving and dissociation of said gas component.
Claim 26
Dependent Claim
19 words
Process according to claim 24, said electrolyte having a vapor pressure of less than 1 mm Hg. at 60*C.
Claim 27
Dependent Claim
16 words
Process according to claim 25, wherein said electromotive force is measured by measuring current generated thereby.
Claim 28
Dependent Claim
16 words
Process according to claim 23, wherein said electromotive force is measured by measuring current generated thereby.
Claim 29
Dependent Claim
19 words
Process according to claim 23, said electrolyte having a vapor pressure of less than 1 mm Hg. at 60*C.
Claim 30
Dependent Claim
22 words
Process according to claim 23, the electrodes and organic electrolyte being the only means of the instrument for generation of electromotive force.
Claim 31
Dependent Claim
21 words
Process according to claim 23, the means adapted to connect the electrodes comprising a circuit having a resistance below 10 kiloohms.
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) | 1977-12-30 | 1978-07-01 | 1978-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-30 | 1982-07-01 | 1982-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-30 | 1986-07-01 | 1986-12-31 | $7700.00 | Window Closed / Lapsed |