US2551924A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Esters of ethynyl siliconic acid
Assignee: PPG Industries Inc
•
Filing: 1947-04-01
•
Granted: 1951-05-08
•
Expires: 1967-04-01
Abstract
No abstract record available.
Inventors
- 👤 Edith M Boldebuck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:31
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/18; C07F7/1804
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
3 words
TRIETHOXY ETHYNYL SILICANE.
Claim 2
Dependent Claim
3 words
TRIETHOXY ETHYNYL SILICANE.
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) | 1954-05-07 | 1954-11-06 | 1955-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-07 | 1958-11-06 | 1959-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-07 | 1962-11-06 | 1963-05-08 | $7700.00 | Window Closed / Lapsed |