US2630446A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymeric silicates
Assignee: EIDP Inc
•
Filing: 1948-08-04
•
Granted: 1953-03-03
•
Expires: 1968-08-04
Abstract
No abstract record available.
Inventors
- 👤 William F Gresham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:09
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/60; Y; Y10; Y10S; Y10S8/00; Y10S8/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
A POLYMERIC MIXED ORTHO-SILICIC ACID ESTER OF A GLYCOL HAVING THE FORMULA
Claim 2
Dependent Claim
12 words
A POLYMERIC MIXED ORTHO-SILICIC ACID ESTER OF A GLYCOL HAVING THE FORMULA
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) | 1956-03-02 | 1956-09-01 | 1957-03-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-03-02 | 1960-09-01 | 1961-03-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-03-02 | 1964-09-01 | 1965-03-03 | $7700.00 | Window Closed / Lapsed |