US2968535A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ultramicro electrode titration assembly
Assignee: Beckman Coulter Inc
•
Filing: 1958-04-03
•
Granted: 1961-01-17
•
Expires: 1978-04-03
Abstract
No abstract record available.
Inventors
- 👤 Edwin P Arthur
- 👤 Gilmont Roger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 01:48
CPC Classifications
G; G01; G01N; G01N31/00; G01N31/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
162 words
TITRATION ASSEMBLY COMPRISING THE COMBINATION OF A HOLDER CONTAINING REFERENCE SOLUTION, A FIRST REFERENCE ELECTRODE ENTERED IN THE REFERENCE SOLUTION CONTAINED IN SAID HOLDER, A GLASS ELECTRODE SAMPLE HOLDER ENTERED IN THE REFERENCE SOLUTION IN SAID FIRST MENTIONED REFERENCE SOLUTION HOLDER SPACED FROM SAID FIRST REFERENCE ELECTRODE AND COMPRISING A TUBULAR HOLDER CONTAINING A SAMPLE FOR TITRATION, SAID SAMPLE HOLDER HAVING A PH SENSITIVE GLASS MEMBRANE SEALED IN AND FORMING THE BOTTOM OF THE SAME AND IMMERSED IN THE REFERENCE SOLUTION IN SAID REFERENCE SOLUTION HOLDER, A BURET ENTERED IN SAID GLASS ELECTRODE SAMPLE HOLDER AND EXTENDING DOWN THROUGH THE SAMPLE CONTAINED IN SAID HOLDER INTO CLOSE RELATION WITH THE INNER FACE OF SAID GLASS MEMBRANE FORMING THE BOTTOM OF SAID HOLDER, MEANS FOR SUPPLYING TITRANT DOWN THROUGH SAID BURET AND THROUGH THE SAMPLE TO THE INNER FACE OF SAID GLASS MEMBRANE AND A SECOND REFERENCE ELECTRODE INSULATED FROM THE FIRST REFERENCE ELECTRODE AND ENTERED IN THE TITRANT SUPPLIED TO SAID BURET.
Claim 2
Dependent Claim
162 words
TITRATION ASSEMBLY COMPRISING THE COMBINATION OF A HOLDER CONTAINING REFERENCE SOLUTION, A FIRST REFERENCE ELECTRODE ENTERED IN THE REFERENCE SOLUTION CONTAINED IN SAID HOLDER, A GLASS ELECTRODE SAMPLE HOLDER ENTERED IN THE REFERENCE SOLUTION IN SAID FIRST MENTIONED REFERENCE SOLUTION HOLDER SPACED FROM SAID FIRST REFERENCE ELECTRODE AND COMPRISING A TUBULAR HOLDER CONTAINING A SAMPLE FOR TITRATION, SAID SAMPLE HOLDER HAVING A PH SENSITIVE GLASS MEMBRANE SEALED IN AND FORMING THE BOTTOM OF THE SAME AND IMMERSED IN THE REFERENCE SOLUTION IN SAID REFERENCE SOLUTION HOLDER, A BURET ENTERED IN SAID GLASS ELECTRODE SAMPLE HOLDER AND EXTENDING DOWN THROUGH THE SAMPLE CONTAINED IN SAID HOLDER INTO CLOSE RELATION WITH THE INNER FACE OF SAID GLASS MEMBRANE FORMING THE BOTTOM OF SAID HOLDER, MEANS FOR SUPPLYING TITRANT DOWN THROUGH SAID BURET AND THROUGH THE SAMPLE TO THE INNER FACE OF SAID GLASS MEMBRANE AND A SECOND REFERENCE ELECTRODE INSULATED FROM THE FIRST REFERENCE ELECTRODE AND ENTERED IN THE TITRANT SUPPLIED TO SAID BURET.
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) | 1964-01-17 | 1964-07-18 | 1965-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-17 | 1968-07-18 | 1969-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-17 | 1972-07-18 | 1973-01-17 | $7700.00 | Window Closed / Lapsed |