Patent US2851474A successfully refreshed from Google Patents.
US2851474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of divinyldialkoxyalkoxysilanes
Assignee: Union Carbide Corp
•
Filing: 1955-10-31
•
Granted: 1958-09-09
•
Expires: 1975-10-31
Abstract
No abstract record available.
Inventors
- 👤 Arthur N Pines
- 👤 Robert E Godlewski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:56
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/18; C07F7/1804; C08; C08G; C08G77/00; C08G77/04; C08G77/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
9 words
PROCESS FOR THE PRODUCTION OF DIVINYLDIALKOXYALKOSYSILANES OF THE FORMULATION:
Claim 2
Dependent Claim
9 words
PROCESS FOR THE PRODUCTION OF DIVINYLDIALKOXYALKOSYSILANES OF THE FORMULATION:
References Cited (Backward Citations)
US2649396A
Cited
US2559342A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-09-08 | 1962-03-10 | 1962-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-09-08 | 1966-03-10 | 1966-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-09-08 | 1970-03-10 | 1970-09-09 | $7700.00 | Window Closed / Lapsed |