Patent US4125599A successfully refreshed from Google Patents.
Patent US3196100A successfully refreshed from Google Patents.
US3196100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxygen detecting and measuring apparatus
Assignee: Leica Microsystems Inc
•
Filing: 1961-09-07
•
Granted: 1965-07-20
•
Expires: 1981-09-07
Abstract
No abstract record available.
Inventors
- 👤 James D Digby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:09
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/403; G01N27/404
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
OXYGEN DETECTING AND MEASURING APPARATUS COMPRISING AN ELONGATED, VERTICALLY DISPOSED VESSEL HAVING A CLOSED BOTTOM AND A PAIR OF VERTICALLY SPACED OPENINGS, A VERTICALLY DISPOSED TUBE ADJOINING THE FIRST SAID VESSEL AND HAVING VERTICALLY SPACED OPENINGS, CONDUITS JOINING SAID UPPER AND LOWER OPENINGS IN SAID VESSEL AND TUBE, AND OXYGEN SELECTIVE PERMEABLE TUBE EXTENDING THROUGH SAID VERTICALLY DISPOSED TUBE, MEANS CLOSING THE ENDS OF SAID VERTICALLY DISPOSED TUBE ABOUT SAID OXYGEN PERMEABLE TUBE, AND ELECTROLYTE FILLING SAID VESSEL AND SAID VERTICALLY DISPOSED TUBE, ELECTRODES EXTENDING INTO SAID VESSEL AND MEANS ON SAID VERTICALLY DISPOSED TUBE FOR INTRODUCING HYDROGEN INTO SAID ELECTROLYTE TO MAINTAIN IT IN A HYDROGEN
Claim 2
Dependent Claim
107 words
OXYGEN DETECTING AND MEASURING APPARATUS COMPRISING AN ELONGATED, VERTICALLY DISPOSED VESSEL HAVING A CLOSED BOTTOM AND A PAIR OF VERTICALLY SPACED OPENINGS, A VERTICALLY DISPOSED TUBE ADJOINING THE FIRST SAID VESSEL AND HAVING VERTICALLY SPACED OPENINGS, CONDUITS JOINING SAID UPPER AND LOWER OPENINGS IN SAID VESSEL AND TUBE, AND OXYGEN SELECTIVE PERMEABLE TUBE EXTENDING THROUGH SAID VERTICALLY DISPOSED TUBE, MEANS CLOSING THE ENDS OF SAID VERTICALLY DISPOSED TUBE ABOUT SAID OXYGEN PERMEABLE TUBE, AND ELECTROLYTE FILLING SAID VESSEL AND SAID VERTICALLY DISPOSED TUBE, ELECTRODES EXTENDING INTO SAID VESSEL AND MEANS ON SAID VERTICALLY DISPOSED TUBE FOR INTRODUCING HYDROGEN INTO SAID ELECTROLYTE TO MAINTAIN IT IN A HYDROGEN
References Cited (Backward Citations)
US998982A
Cited
US2071697A
Cited
US2370871A
Cited
US2651612A
Cited
US2805191A
Cited
US3050371A
Cited
US2927888A
Cited
US2913386A
Cited
US3022241A
Cited
US3028317A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-19 | 1969-01-18 | 1969-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-19 | 1973-01-18 | 1973-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-19 | 1977-01-18 | 1977-07-20 | $7700.00 | Window Closed / Lapsed |