Patent US4849178A successfully refreshed from Google Patents.
US4849178A
Expired / Lapsed
US
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Apparatus for measuring ozone concentration
Assignee: Mitsubishi Electric Corp
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Filing: 1982-07-07
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Granted: 1989-07-18
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Expires: 2002-07-07
Abstract
Abstract An apparatus for measuring ozone concentration in which ozone contained in a liquid to be measured is caused to shift into a clean gas in a gas-liquid contacting tube. The gas into which the ozone has shifted is supplied to a photocell into which light is projected. The gas supplied to the photocell is exhausted through an ozone dissolving tube. The light transmitted through the photocell enters a detector. The output from the detector is utilized as an indication of the concentration of ozone in the exhausted gas, and hence in the liquid.
Inventors
- 👤 Kenkoku Azuma
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:43
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/0004; G01N33/0009; G01N33/0027; G01N33/0036; G01N33/0039; G01N21/00; G01N21/17; G01N21/25; G01N21/31; G01N21/33; G01N21/75; G01N21/76; G01N21/766; Y; Y10; Y10T; Y10T436/00; Y10T436/20; Y10T436/206664; Y10T436/25; Y10T436/25375
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
115 words
An apparatus for measuring the ozone concentration of a liquid, comprising: a gas-liquid contacting means which is supplied with an ozone-containing liquid at a first predetermined rate and a clean gas at a second predetermined rate for contacting said liquid with said gas, to thereby shift the ozone in said liquid to said gas; optical analyzing means which is supplied with the gas exhausted from said contacting means, said analyzing means including a light source outputting light of a frequency normally absorbed by the ozone present in said exhaust gas, and means for measuring the amount of ozone present in said ozone-containing liquid by sensing the amount of said light passing through said exhausted gas.
Claim 2
Independent Claim
115 words
An apparatus for measuring the ozone concentration of a liquid, comprising: a gas-liquid contacting means which is supplied with an ozone-containing liquid at a first predetermined rate and a clean gas at a second predetermined rate for contacting said liquid with said gas, to thereby shift the ozone in said liquid to said gas; optical analyzing means which is supplied with the gas exhausted from said contacting means, said analyzing means including a light source outputting light of a frequency normally absorbed by the ozone present in said exhaust gas, and means for measuring the amount of ozone present in said ozone-containing liquid by sensing the amount of said light passing through said exhausted gas.
Claim 3
Dependent Claim
27 words
The apparatus for measuring ozone concentration according to claim 1, wherein said gas-liquid contacting means comprises a diffuser for diffusing said clean gas into said ozone-containing liquid.
Claim 4
Dependent Claim
28 words
The apparatus for measuring ozone concentration according to claim 1, wherein said clean gas is supplied to said gas-liquid contacting means by a compressor of an oilless type.
Claim 5
Dependent Claim
26 words
The apparatus for measuring ozone concentration according to claim 1, further comprising an ozone dissolving tube for exhausting said ozone-containing gas supplied to said optical means.
Claim 6
Independent Claim
114 words
An apparatus for measuring the ozone concentration of a liquid, comprising; means for receiving an ozone-containing liquid at a first predetermined rate and a clean gas at a second predetermined rate, and for shifting the ozone in said ozone-containing liquid to said clean gas, by contacting said ozone-containing liquid with said clean gas; optical analyzing means which is supplied with the gas exhausted from said shifting means; said analyzing means including a light source outputting light of a frequency normally absorbed by the ozone present in said exhaust gas, and means for measuring the amount of ozone present in said ozone-containing liquid by sensing the amount of said light passing through said exhausted gas.
Claim 7
Independent Claim
114 words
An apparatus for measuring the ozone concentration of a liquid, comprising; means for receiving an ozone-containing liquid at a first predetermined rate and a clean gas at a second predetermined rate, and for shifting the ozone in said ozone-containing liquid to said clean gas, by contacting said ozone-containing liquid with said clean gas; optical analyzing means which is supplied with the gas exhausted from said shifting means; said analyzing means including a light source outputting light of a frequency normally absorbed by the ozone present in said exhaust gas, and means for measuring the amount of ozone present in said ozone-containing liquid by sensing the amount of said light passing through said exhausted gas.
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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) | 1992-07-17 | 1993-01-16 | 1993-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-07-17 | 1997-01-16 | 1997-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-07-17 | 2001-01-16 | 2001-07-18 | $7700.00 | Window Closed / Lapsed |