Patent US2615034A successfully refreshed from Google Patents.
US2615034A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparation of trimethylchlorosilane
Assignee: Dow Silicones Corp
•
Filing: 1951-09-21
•
Granted: 1952-10-21
•
Expires: 1971-09-21
Abstract
No abstract record available.
Inventors
- 👤 James F Hyde
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 16:39
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/12; C07F7/121; C07F7/123
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
A METHOD FOR PREPARING TRIMETHYLCHLOROSILANE WHICH COMPRISES REACTING HYDROGEN CHLORIDE WITH HEXAMETHYLDISILOXANE IN THE PRESENCE OF AT LEAST .01 MOL PER CENT BASED ON THE SILOXANE OF AN ANHYDROUS CHLORIDE OF A METAL OF GROUP II OF THE PERIODIC TABLE, SAID METAL HAVING AN ATOMIC WEIGHT LESS THAN 140, AT A TEMPERATURE BELOW 100* C.
Claim 2
Independent Claim
55 words
A METHOD FOR PREPARING TRIMETHYLCHLOROSILANE WHICH COMPRISES REACTING HYDROGEN CHLORIDE WITH HEXAMETHYLDISILOXANE IN THE PRESENCE OF AT LEAST .01 MOL PER CENT BASED ON THE SILOXANE OF AN ANHYDROUS CHLORIDE OF A METAL OF GROUP II OF THE PERIODIC TABLE, SAID METAL HAVING AN ATOMIC WEIGHT LESS THAN 140, AT A TEMPERATURE BELOW 100* C.
References Cited (Backward Citations)
US2500761A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-10-21 | 1956-04-21 | 1956-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-10-21 | 1960-04-21 | 1960-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-10-21 | 1964-04-21 | 1964-10-21 | $7700.00 | Window Closed / Lapsed |