Patent US3285703A successfully refreshed from Google Patents.
US3285703A
Expired / Lapsed
US
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Photosensitive means for determining trace oxygen by measuring chemiluminescence
Assignee: Japan Oxygen Co Ltd
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Filing: 1963-05-31
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Granted: 1966-11-15
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Expires: 1983-05-31
Abstract
No abstract record available.
Inventors
- 👤 Narita Yoshio
- 👤 Uzuki Busuke
- 👤 Tomimoto Akio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 07:40
CPC Classifications
G; G01; G01N; G01N21/00; G01N21/62; G01N21/71; G01N21/72; G01N21/75; G01N21/76; G01N21/766
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
ANALYZER APPARATUS FOR QUANTITATIVELY MEASURING TRACE OXYGEN COMPRISING, CONTROLLABLE INLET MEANS FOR SELECTIVELY SUPPLYING A GAS SAMPLE INCLUDING TRACE OXYGEN, A REACTION CHAMBER CONNECTED TO SAID INLET MEANS, OULET MEANS FOR EXHAUSTING SAID CHAMBER, PHOSPHORUS SOURCE MEANS FOR RELEASING PHOSPHORUS VAPOR INTO SAID CHAMBER TO CONTACT THE GAS SAMPLE AND CHEMICALLY REACT THEREWITH TO RELEASE LIGHT EMISSIONS, PHOTOMULTIPLIER MEANS DISPOSED ADJACENT TO SAID CHAMBER TO RECEIVE THE LIGHT EMISSIONS FROM THE CHEMICAL REACTION, SAID PHOTOMULTIPLIER
Claim 2
Dependent Claim
75 words
ANALYZER APPARATUS FOR QUANTITATIVELY MEASURING TRACE OXYGEN COMPRISING, CONTROLLABLE INLET MEANS FOR SELECTIVELY SUPPLYING A GAS SAMPLE INCLUDING TRACE OXYGEN, A REACTION CHAMBER CONNECTED TO SAID INLET MEANS, OULET MEANS FOR EXHAUSTING SAID CHAMBER, PHOSPHORUS SOURCE MEANS FOR RELEASING PHOSPHORUS VAPOR INTO SAID CHAMBER TO CONTACT THE GAS SAMPLE AND CHEMICALLY REACT THEREWITH TO RELEASE LIGHT EMISSIONS, PHOTOMULTIPLIER MEANS DISPOSED ADJACENT TO SAID CHAMBER TO RECEIVE THE LIGHT EMISSIONS FROM THE CHEMICAL REACTION, SAID PHOTOMULTIPLIER
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) | 1969-11-14 | 1970-05-16 | 1970-11-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-14 | 1974-05-16 | 1974-11-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-14 | 1978-05-16 | 1978-11-15 | $7700.00 | Window Closed / Lapsed |