US2943059A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ion exchange glass and use
Assignee: 3M Co
•
Filing: 1955-06-03
•
Granted: 1960-06-28
•
Expires: 1975-06-03
Abstract
No abstract record available.
Inventors
- 👤 Warren R Beck
- 👤 George C Hann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:08
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/20; C08J5/22; B; B01; B01J; B01J39/00; B01J39/08; B01J39/09
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
64 words
A GLASSY ARTICLE OF MANUFACTURE COMPRISING A MICROSCOPICALLY POROUS VITRIFIED GLASSY STRUCTURE ESSENTIALLY CONSISTING, AS DETERMINED BY CHEMICAL ANALYSIS, OF THE INORGANIC OXIDES SET FORTH IN THE FOLLOWING TABLE WITH APPROXIMATE AMOUNTS SPECIFIED IN MOL PERCENT: ZRO2 ---------------- 30 SIO2 ---------------- 3 ALO1.5 -------------- 4 PO2.5 --------------- 63 SAID STRUCTURE BEING CHARACTERIZED BY AN ION EXCHANGE CAPACITY GREATER THAN APPROXIMATELY 5 MILLIEQUIVALENTS PER GRAM.
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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) | 1963-06-28 | 1963-12-28 | 1964-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-28 | 1967-12-28 | 1968-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-28 | 1971-12-28 | 1972-06-28 | $7700.00 | Window Closed / Lapsed |