US2950176A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for liquid analysis
Assignee: Beckman Coulter Inc
•
Filing: 1955-08-15
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Granted: 1960-08-23
•
Expires: 1975-08-15
Abstract
No abstract record available.
Inventors
- 👤 Louis C Thayer
- 👤 Jr Michael Czuha
- 👤 Malbone W Greene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:41
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/02; G01N27/021
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
185 words
A METHOD OF CONTINUOUSLY ANALYZING WATER CONTAINING ANIONIC AND CATIONIC COMPOUNDS DISPOSED THEREIN FOR SAID IONIC COMPOUNDS, WHICH COMPRISES: MEASURING THE CONDUCTANCE OF SAID WATER, PASSING SAID WATER THROUGH A CATION EXCHANGE MATERIAL SO AS TO REPLACE THE CATIONS OTHER THAN HYDROGEN WITHIN SAID WATER WITH HYDROGEN IONS, MEASURING THE CONDUCTANCE OF SAID LIQUID AFTER IT HAS BEEN PASSED THROUGH SAID CATION EXCHANGE MATERIAL, COMPARING THE TWO MEASURED CONDUCTANCE TO DETERMINE THE DIFFERENCE THEREBETWEEN, THE CHANGE IN CONDUCTANCE BEING A FUNCTION OF THE QUANTITY OF CATIONS REPLACED BY SAID CATION EXCHANGE MATERIAL, PASSING SAID WATER THROUGH AN ANION EXCHANGE MATERIAL SO AS TO REPLACE THE ANIONS OTHER THAN HYDROXYL WITHIN SAID WATER WITH HYDROXYL IONS, CAUSING THE FORMATION OF WATER, MEASURING CONDUCTANCE OF SAID WATER AFTER IT HAS BEEN PASSED THROUGH SAID ANION EXCHANGE MATERIAL, WITH SAID WATER BEING PASSED THROUGH SAID EXCHANGE MATERIALS IN A CONTINUOUS STREAM AND WITH SAID CONDUCTANCE MEASUREMENTS BEING MADE AT THE SAME TIME, AND CONTINUOUSLY COMPARING THE THREE MEASURED CONDUCTANCE TO DETERMINE THE DIFFERENCES THEREBETWEEN, THE CHANGES IN CONDUCTANCE BEING FUNCTIONS OF THE QUANTITY OF ANIONS WITHIN SAID WATER.
Claim 2
Independent Claim
185 words
A METHOD OF CONTINUOUSLY ANALYZING WATER CONTAINING ANIONIC AND CATIONIC COMPOUNDS DISPOSED THEREIN FOR SAID IONIC COMPOUNDS, WHICH COMPRISES: MEASURING THE CONDUCTANCE OF SAID WATER, PASSING SAID WATER THROUGH A CATION EXCHANGE MATERIAL SO AS TO REPLACE THE CATIONS OTHER THAN HYDROGEN WITHIN SAID WATER WITH HYDROGEN IONS, MEASURING THE CONDUCTANCE OF SAID LIQUID AFTER IT HAS BEEN PASSED THROUGH SAID CATION EXCHANGE MATERIAL, COMPARING THE TWO MEASURED CONDUCTANCE TO DETERMINE THE DIFFERENCE THEREBETWEEN, THE CHANGE IN CONDUCTANCE BEING A FUNCTION OF THE QUANTITY OF CATIONS REPLACED BY SAID CATION EXCHANGE MATERIAL, PASSING SAID WATER THROUGH AN ANION EXCHANGE MATERIAL SO AS TO REPLACE THE ANIONS OTHER THAN HYDROXYL WITHIN SAID WATER WITH HYDROXYL IONS, CAUSING THE FORMATION OF WATER, MEASURING CONDUCTANCE OF SAID WATER AFTER IT HAS BEEN PASSED THROUGH SAID ANION EXCHANGE MATERIAL, WITH SAID WATER BEING PASSED THROUGH SAID EXCHANGE MATERIALS IN A CONTINUOUS STREAM AND WITH SAID CONDUCTANCE MEASUREMENTS BEING MADE AT THE SAME TIME, AND CONTINUOUSLY COMPARING THE THREE MEASURED CONDUCTANCE TO DETERMINE THE DIFFERENCES THEREBETWEEN, THE CHANGES IN CONDUCTANCE BEING FUNCTIONS OF THE QUANTITY OF ANIONS WITHIN SAID WATER.
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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) | 1963-08-23 | 1964-02-22 | 1964-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-23 | 1968-02-22 | 1968-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-23 | 1972-02-22 | 1972-08-23 | $7700.00 | Window Closed / Lapsed |