US3159496A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of aqueous solutions of organosilicon compounds
Assignee: Evonik Operations GmbH
•
Filing: 1961-08-22
•
Granted: 1964-12-01
•
Expires: 1981-08-22
Abstract
No abstract record available.
Inventors
- 👤 Rossmy Gerd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 14:56
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0834; C08; C08G; C08G77/00; C08G77/04; C08G77/14; C08G77/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
15 words
A PROCESS OR THE PREPARATION OF AQUEOUS SOLUTIONS OF HYDROXYALKYL-SUBSTITUTED SILANOLS OF THE GENERAL FORMULA
Claim 2
Dependent Claim
15 words
A PROCESS OR THE PREPARATION OF AQUEOUS SOLUTIONS OF HYDROXYALKYL-SUBSTITUTED SILANOLS OF 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) | 1967-12-01 | 1968-06-01 | 1968-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-12-01 | 1972-06-01 | 1972-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-12-01 | 1976-06-01 | 1976-12-01 | $7700.00 | Window Closed / Lapsed |