Patent GB500180A successfully refreshed from Google Patents.
US3147081A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Technique in blood testing
Assignee: Beckman Coulter Inc
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Filing: 1961-02-27
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Granted: 1964-09-01
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Expires: 1981-02-27
Abstract
No abstract record available.
Inventors
- 👤 George W Stevenson
- 👤 Ernest N Carlsen
- 👤 Edwin P Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 20:44
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/48; G01N33/483; G01N33/487; G01N33/49; G01N33/4925; Y; Y10; Y10T; Y10T436/00; Y10T436/20; Y10T436/204998
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
IN A BLOOD PCO2 DETERMINATION EMPLOYING PH MEASUREMENTS OF A BLOOD SPECIMEN, THE IMPROVEMENT COMPRISING: SUPPLYING THE BLOOD SPECIMEN TO A SAMPLE CHAMBER AND THERE DETERMINING THE PH OF SAID BLOOD SPECIMEN; FORMING A FILM OF SAID BLOOD SPECIMEN WITHIN THE SAMPLE CHAMBER AND EQUILIBRATING THE BLOOD FILM WITH CO2CONTAINING GAS STREAM OF KNOWN CO2 CONTENT; AND THEREAFTER DETERMINING THE PH OF THE EQUILIBRATED BLOOD FILM.
Claim 2
Dependent Claim
66 words
IN A BLOOD PCO2 DETERMINATION EMPLOYING PH MEASUREMENTS OF A BLOOD SPECIMEN, THE IMPROVEMENT COMPRISING: SUPPLYING THE BLOOD SPECIMEN TO A SAMPLE CHAMBER AND THERE DETERMINING THE PH OF SAID BLOOD SPECIMEN; FORMING A FILM OF SAID BLOOD SPECIMEN WITHIN THE SAMPLE CHAMBER AND EQUILIBRATING THE BLOOD FILM WITH CO2CONTAINING GAS STREAM OF KNOWN CO2 CONTENT; AND THEREAFTER DETERMINING THE PH OF THE EQUILIBRATED BLOOD FILM.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-09-01 | 1968-03-02 | 1968-09-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-09-01 | 1972-03-02 | 1972-09-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-09-01 | 1976-03-02 | 1976-09-01 | $7700.00 | Window Closed / Lapsed |