US3320946A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and means for testing cellular tissues
Assignee: Individual
•
Filing: 1963-07-29
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Granted: 1967-05-23
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Expires: 1983-07-29
Abstract
No abstract record available.
Inventors
- 👤 Dethloff Jurgen
- 👤 Hennings Christian
- 👤 Ulrichs Carl Heinz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:32
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/04; A; A61; A61B; A61B5/00; A61B5/05; G01N33/00; G01N33/02; G01N33/12; Y; Y10; Y10S; Y10S99/00; Y10S99/11
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
192 words
A METHOD FOR TESTING THE PHYSIOLOGICAL CONDITION OF VEGETABLE AND ANIMAL CELLULAR TISSUES HAVING A CELL WALL AND A CELL CONTENT AND HAVING AN EQUIVALENT CIRCUIT COMPRISING THE RESISTANCE OF THE INTERCELLULAR LIQUID CONNECTED IN SERIES TO A CLOSED LOOP COMPRISING THE SERIES CONNECTION OF THE RESISTANCE OF THE CELL CONTENT, THE RESISTANCE OF THE CELL WALL AND THE CAPACITANCE PRODUCED BY CURRENT FLOW DUE TO CHARGE BLOCKAGE ON THE CELL WALL, COMPRISING THE STEPS OF MEASURING THE IMPEDANCE OF AN OBJECT COMPRISING CELLULAR TISSUES TO BE TESTED AT AN A.C. HAVING A FIRST FREQUENCY APPLIED TO SAID OBJECT; MEASURING THE IMPEDANCE OF SAID OBJECT AT AN A.C. HAVING A SECOND FREQUENCY DIFFERENT FROM SAID FIRST FREQUENCY APPLIED TO SAID OBJECT; DIVIDING THE IMPEDANCE MEASUREMENT AT THE FIRST FREQUENCY BY THE IMPEDANCE MEASUREMENT AT THE SECOND FREQUENCY TO PROVIDE A RATIO WHICH IS PROPORTIONAL TO THE CELLULAR CONDITION OF SAID OBJECT AND THUS INDICATES THE SUITABILITY OF SAID OBJECT FOR HUMAN CONSUMPTION; MEASURING A FIRST VOLTAGE EQUIVALENT TO SAID FIRST FREQUENCY A.C.; MEASURING A SECOND VOLTAGE EQUIVALENT TO SAID SECOND FREQUENCY A.C.; AND MAINTAINING CONSTANT ONE OF SAID FIRST AND SECOND VOLTAGES.
Claim 2
Independent Claim
192 words
A METHOD FOR TESTING THE PHYSIOLOGICAL CONDITION OF VEGETABLE AND ANIMAL CELLULAR TISSUES HAVING A CELL WALL AND A CELL CONTENT AND HAVING AN EQUIVALENT CIRCUIT COMPRISING THE RESISTANCE OF THE INTERCELLULAR LIQUID CONNECTED IN SERIES TO A CLOSED LOOP COMPRISING THE SERIES CONNECTION OF THE RESISTANCE OF THE CELL CONTENT, THE RESISTANCE OF THE CELL WALL AND THE CAPACITANCE PRODUCED BY CURRENT FLOW DUE TO CHARGE BLOCKAGE ON THE CELL WALL, COMPRISING THE STEPS OF MEASURING THE IMPEDANCE OF AN OBJECT COMPRISING CELLULAR TISSUES TO BE TESTED AT AN A.C. HAVING A FIRST FREQUENCY APPLIED TO SAID OBJECT; MEASURING THE IMPEDANCE OF SAID OBJECT AT AN A.C. HAVING A SECOND FREQUENCY DIFFERENT FROM SAID FIRST FREQUENCY APPLIED TO SAID OBJECT; DIVIDING THE IMPEDANCE MEASUREMENT AT THE FIRST FREQUENCY BY THE IMPEDANCE MEASUREMENT AT THE SECOND FREQUENCY TO PROVIDE A RATIO WHICH IS PROPORTIONAL TO THE CELLULAR CONDITION OF SAID OBJECT AND THUS INDICATES THE SUITABILITY OF SAID OBJECT FOR HUMAN CONSUMPTION; MEASURING A FIRST VOLTAGE EQUIVALENT TO SAID FIRST FREQUENCY A.C.; MEASURING A SECOND VOLTAGE EQUIVALENT TO SAID SECOND FREQUENCY A.C.; AND MAINTAINING CONSTANT ONE OF SAID FIRST AND SECOND VOLTAGES.
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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) | 1970-05-22 | 1970-11-21 | 1971-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-22 | 1974-11-21 | 1975-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-22 | 1978-11-21 | 1979-05-23 | $7700.00 | Window Closed / Lapsed |