US3143488A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lithia-alumina-silica glass containing phosphorus
Assignee: Beckman Coulter Inc
•
Filing: 1960-10-24
•
Granted: 1964-08-04
•
Expires: 1980-10-24
Abstract
No abstract record available.
Inventors
- 👤 Edwin P Arthur
- 👤 John E Leonard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:28
CPC Classifications
C; C03; C03C; C03C3/00; C03C3/04; C03C3/076; C03C3/097; C03C3/083; C03C4/00; C03C4/18; G; G01; G01N; G01N27/00; G01N27/26; G01N27/28; G01N27/30; G01N27/36
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
33 words
AN IONIC SENSITIVE PHOSPHATE GLASS MADE FROM A PREFUSION MIXTURE OF SALT AND OXIDE WHICH IS CALCULATED TO PROVIDE IN MOL PERCENT, ABOUT 2K LITHIA, 6 ALUMINA, 63 SILICA, AND 6 PHOSPHORUS PENTOXIDE.
References Cited (Backward Citations)
US1964629A
Cited
US2469211A
Cited
US2444845A
Cited
US2559805A
Cited
US2571242A
Cited
US2829090A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-04 | 1968-02-03 | 1968-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-04 | 1972-02-03 | 1972-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-04 | 1976-02-03 | 1976-08-04 | $7700.00 | Window Closed / Lapsed |