US3282803A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Measuring oxygen absorption
Assignee: JM Voith GmbH
•
Filing: 1962-02-20
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Granted: 1966-11-01
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Expires: 1982-02-20
Abstract
No abstract record available.
Inventors
- 👤 Poepel Franz
- 👤 Steinecke Helmut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:59
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/416; G01N27/42; G01N27/44; G01N27/423; G01N33/00; G01N33/18; G01N33/1806; G01N33/48; G01N33/483; G01N33/497; G01N7/00; G01N7/02; G01N7/04; Y; Y10; Y10S; Y10S435/00; Y10S435/807; Y10T; Y10T436/00; Y10T436/11
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
IN A METHOD OF MEASURING OXYGEN ABSORPTION, INCLUDING THE BIOCHEMICAL OXYGEN ABSORPTION OF WATER, WHEN ASCERTAINING THE BIOCHEMICAL OXYGEN DEMAND IN A WATER SUPPLY, BY SUPPLYING AND MEASURING THE QUANTITY OF OXYGEN NECESSARY TO COMPENSATE FOR THE DROP IN PRESSURE CREATED BY CONSUMPTION IN A SYSTEM CLOSED TO THE ATMOSPHERE AND IN WHICH SAID SYSTEM CONTAINS A SAMPLE TO BE TESTED, THE IMPROVEMENT IN WHICH OXYGEN IS SUPPLIED BY ELECTROLYSIS (A) DISCONTINUOUSLY AT A CONSTANT QUANTITY PER TIME UNIT DURING A PERIOD RESPONSIVE TO THE CONSUMPTION OF OXYGEN BY THE SAMPLE; AND (B) OXYGEN IS SUPPLIED AUTOMATICALLY AFTER A FIRST PREDETERMINED PRESSURE HAS BEEN REACHED AND THE SUPPLY IS AUTOMATICALLY DISCONTINUED AFTER A SECOND HIGHER PREDETERMINED PRESSURE HAS BEEN REACHED.
Claim 2
Dependent Claim
120 words
IN A METHOD OF MEASURING OXYGEN ABSORPTION, INCLUDING THE BIOCHEMICAL OXYGEN ABSORPTION OF WATER, WHEN ASCERTAINING THE BIOCHEMICAL OXYGEN DEMAND IN A WATER SUPPLY, BY SUPPLYING AND MEASURING THE QUANTITY OF OXYGEN NECESSARY TO COMPENSATE FOR THE DROP IN PRESSURE CREATED BY CONSUMPTION IN A SYSTEM CLOSED TO THE ATMOSPHERE AND IN WHICH SAID SYSTEM CONTAINS A SAMPLE TO BE TESTED, THE IMPROVEMENT IN WHICH OXYGEN IS SUPPLIED BY ELECTROLYSIS (A) DISCONTINUOUSLY AT A CONSTANT QUANTITY PER TIME UNIT DURING A PERIOD RESPONSIVE TO THE CONSUMPTION OF OXYGEN BY THE SAMPLE; AND (B) OXYGEN IS SUPPLIED AUTOMATICALLY AFTER A FIRST PREDETERMINED PRESSURE HAS BEEN REACHED AND THE SUPPLY IS AUTOMATICALLY DISCONTINUED AFTER A SECOND HIGHER PREDETERMINED PRESSURE HAS BEEN REACHED.
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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) | 1969-10-31 | 1970-05-02 | 1970-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-31 | 1974-05-02 | 1974-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-31 | 1978-05-02 | 1978-11-01 | $7700.00 | Window Closed / Lapsed |