US3449393A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of methyl-(bromomethyl)-chlorosilanes
Assignee: Bayer AG
•
Filing: 1966-10-26
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Granted: 1969-06-10
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Expires: 1986-10-26
Abstract
No abstract record available.
Inventors
- 👤 Hans Sattlegger
- 👤 Walter Simmler
- 👤 Walter Noll
- 👤 Hans Niederprum
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 18:24
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/12; C07F7/121; C07F7/127; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/582
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
11 words
A PROCESS FOR THE PREPARATION OF A METHYL-(BROMOMETHYL)-CHLOROSILANE OF THE FORMULA
Claim 2
Dependent Claim
11 words
A PROCESS FOR THE PREPARATION OF A METHYL-(BROMOMETHYL)-CHLOROSILANE OF THE FORMULA
Claim 3
Dependent Claim
25 words
A PROCESS AS CLAIMED IN CLAIM 1 WHEREIN THE REACTION IS EFFECTED IN THE PRESENCE OF A CATALYTIC AMOUNT OF AN ORGANIC FREE RADICAL INITIATOR.
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) | 1972-06-09 | 1972-12-09 | 1973-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-06-09 | 1976-12-09 | 1977-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-06-09 | 1980-12-09 | 1981-06-10 | $7700.00 | Window Closed / Lapsed |