US2131718A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stable, hydrous silicate and method of making same
Assignee: Diamond Shamrock Corp
•
Filing: 1936-07-02
•
Granted: 1938-09-27
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Expires: 1956-07-02
Abstract
No abstract record available.
Inventors
- 👤 Mcdaniel George Ridgley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:59
CPC Classifications
C; C01; C01B; C01B33/00; C01B33/20; C01B33/32; C01B33/325; Y; Y10; Y10S; Y10S159/00; Y10S159/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1941-09-26 | 1942-03-28 | 1942-09-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1945-09-26 | 1946-03-28 | 1946-09-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1949-09-26 | 1950-03-28 | 1950-09-27 | $7700.00 | Window Closed / Lapsed |