US3269386A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and apparatus for flow measurements
Assignee: Individual
•
Filing: 1963-07-12
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Granted: 1966-08-30
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Expires: 1983-07-12
Abstract
No abstract record available.
Inventors
- 👤 Sherman Herbert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:32
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/02; A61B5/026; A61B5/0275; A61B5/72; A61B5/7235; A61B5/7242; G; G01; G01F; G01F1/00; G01F1/704; A61B5/7239
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A METHOD OF COMPUTING THE AREA UNDER A BLOODCARRIED INJECTANT CONCENTRATION-CURVE, AN UNKNOWN PREDETERMINED PORTION OF WHICH FOLLOWS A SUBSTANTIALLY DECAYING EXPONENTIAL LAW HAVING A PREDETERMINED NEGATIVE-SLOPE CHARACTERISTIC, THAT COMPRISES, A PRODUCING SUCCESSIVE ELECTRICAL SIGNALS THAT ARE THE ANALOG OF THE CURVE, CONTINUALLY INTEGRATING THE SIGNALS, CONTINUALLY PREDICTING FROM THE SUCCESSIVE SIGNALS SUCCESSIVE AREAS CORRESPONDING TO AREAS UNDER PREDICTED CURVES FOLLOWING THE SAID SUBSTANTIALLY EXPONENTIAL LAW, MONITORING THE SIGNALS UNTIL A SIGNAL IS REACHED THAT HAS THE SAID PREDETERMINED NEGATIVE-SLOPE CHARACTERISTIC, AND THEREUPON ADDING TO THE INTEGRATED SIGNALS THE THEN-PREDICTED AREA TO PRODUCE A MEASURE OF THE RATE OF FLOW OF THE INJECTANT.
Claim 2
Independent Claim
103 words
A METHOD OF COMPUTING THE AREA UNDER A BLOODCARRIED INJECTANT CONCENTRATION-CURVE, AN UNKNOWN PREDETERMINED PORTION OF WHICH FOLLOWS A SUBSTANTIALLY DECAYING EXPONENTIAL LAW HAVING A PREDETERMINED NEGATIVE-SLOPE CHARACTERISTIC, THAT COMPRISES, A PRODUCING SUCCESSIVE ELECTRICAL SIGNALS THAT ARE THE ANALOG OF THE CURVE, CONTINUALLY INTEGRATING THE SIGNALS, CONTINUALLY PREDICTING FROM THE SUCCESSIVE SIGNALS SUCCESSIVE AREAS CORRESPONDING TO AREAS UNDER PREDICTED CURVES FOLLOWING THE SAID SUBSTANTIALLY EXPONENTIAL LAW, MONITORING THE SIGNALS UNTIL A SIGNAL IS REACHED THAT HAS THE SAID PREDETERMINED NEGATIVE-SLOPE CHARACTERISTIC, AND THEREUPON ADDING TO THE INTEGRATED SIGNALS THE THEN-PREDICTED AREA TO PRODUCE A MEASURE OF THE RATE OF FLOW OF THE INJECTANT.
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) | 1969-08-29 | 1970-02-28 | 1970-08-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-29 | 1974-02-28 | 1974-08-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-29 | 1978-02-28 | 1978-08-30 | $7700.00 | Window Closed / Lapsed |