Patent US1724641A successfully refreshed from Google Patents.
Patent US3238050A successfully refreshed from Google Patents.
US3238050A
Expired / Lapsed
US
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Ion sensitive glass
Assignee: Beckman Coulter Inc
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Filing: 1964-11-12
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Granted: 1966-03-01
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Expires: 1984-11-12
Abstract
No abstract record available.
Inventors
- 👤 Edwin P Arthur
- 👤 Robert W Nolan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:37
CPC Classifications
G; G01; G01N; G01N27/00; G01N27/26; G01N27/28; G01N27/30; G01N27/36; C; C03; C03C; C03C3/00; C03C3/04; C03C3/076; C03C4/00; C03C4/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
A LOW RESISTANCE GLASS FOR HYDROGEN ION POTENTIAL MEASUREMENT CONSISTING ESSENTIALLY OF AN YTTRIUM-ALKALI METAL-SILICATE GLASS FREE OF ALKALINE EARTH METALS AND CONTAINING 4 TO ABOUT 14 MOS PROPORTIONS OF A SUBSTNCE, SAID SUBSTANCE BEING SELECTED FROM THE GROUP CONSISTING OF YTTRIA ALONE AND AN ADMIXTURE OF AN OXIDE OF THE LANTHANIDE SERIES AND AT LEAST 4 MOL PROORTIONS OF YTTRIA WITH THE MOL PROPORTIONS OF YTTRIA EXCEDINGT THE MOL PROPORTIONS OF THE OXIDE OF THE LATHANIDE SEREIES IN SAID ADMIXTURE, AND 28 TO 38 MOL PROPORTIONS OF A SINGLE ALKALI METAL OXIDE SELECTED FROM THE GROUP CONSISTING OF LITHIA AND SODA, AND 57 TO 68 MOL PROPORTIONS OF SILICA.
Claim 2
Dependent Claim
110 words
A LOW RESISTANCE GLASS FOR HYDROGEN ION POTENTIAL MEASUREMENT CONSISTING ESSENTIALLY OF AN YTTRIUM-ALKALI METAL-SILICATE GLASS FREE OF ALKALINE EARTH METALS AND CONTAINING 4 TO ABOUT 14 MOS PROPORTIONS OF A SUBSTNCE, SAID SUBSTANCE BEING SELECTED FROM THE GROUP CONSISTING OF YTTRIA ALONE AND AN ADMIXTURE OF AN OXIDE OF THE LANTHANIDE SERIES AND AT LEAST 4 MOL PROORTIONS OF YTTRIA WITH THE MOL PROPORTIONS OF YTTRIA EXCEDINGT THE MOL PROPORTIONS OF THE OXIDE OF THE LATHANIDE SEREIES IN SAID ADMIXTURE, AND 28 TO 38 MOL PROPORTIONS OF A SINGLE ALKALI METAL OXIDE SELECTED FROM THE GROUP CONSISTING OF LITHIA AND SODA, AND 57 TO 68 MOL PROPORTIONS OF SILICA.
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) | 1969-02-28 | 1969-08-30 | 1970-03-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-28 | 1973-08-30 | 1974-03-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-28 | 1977-08-30 | 1978-03-01 | $7700.00 | Window Closed / Lapsed |