US2776307A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyglycol silicates
Assignee: California Research LLC
•
Filing: 1953-12-30
•
Granted: 1957-01-01
•
Expires: 1973-12-30
Abstract
No abstract record available.
Inventors
- 👤 Andrew D Abbott
- 👤 Robert O Bolt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:53
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
9 words
SILICON ESTERS OF THE TYPE HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
9 words
SILICON ESTERS OF THE TYPE HAVING THE GENERAL 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) | 1960-01-01 | 1960-07-02 | 1961-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-01 | 1964-07-02 | 1965-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-01 | 1968-07-02 | 1969-01-01 | $7700.00 | Window Closed / Lapsed |