US3839383A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrolysis-resistant unsaturated organic compounds containing hindered alkoxy or aryloxy groups
Assignee: Dynamit Nobel AG
•
Filing: 1971-10-27
•
Granted: 1974-10-01
•
Expires: 1991-10-27
Abstract
Abstract 1. A HYDROLYSIS RESISTANT UNSATURATED ORGANIC SILICON COMPOUND HAVING THE FORMULA: R1-SI(-R2)(-O-R3)-O-R4 WHEREIN R1 IS ALKENYL HAVING 2-4 CARBON ATOMS, R2 IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF ALKENYL HAVING 2-4 CARBON ATOMS ALKOXY UP TO 10 CARBON ATOMS AND HALOGEN, R3 AND R4 ARE EACH STERICALLY HINDERED TERTIARY ALKYL OR TAKEN TOGETHER ARE DI-TERT.-ALKYL HAVING 4-10 CARBON ATOMS.
Inventors
- 👤 H Kotzsch
- 👤 R Buning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:58
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/18; C07F7/1804; C07F7/0834; C07F7/0838
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
10 words
A HYDROLYSIS RESISTANT UNSATURATED ORGANIC SILICON COMPOUND HAVING THE FORMULA:
Claim 2
Dependent Claim
10 words
A HYDROLYSIS RESISTANT UNSATURATED ORGANIC SILICON COMPOUND HAVING THE FORMULA:
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-09-30 | 1978-04-01 | 1978-10-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-09-30 | 1982-04-01 | 1982-10-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-09-30 | 1986-04-01 | 1986-10-01 | $7700.00 | Window Closed / Lapsed |