US2626271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of organohalosilanes
Assignee: Dow Chemical Co
•
Filing: 1946-06-06
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Granted: 1953-01-20
•
Expires: 1966-06-06
Abstract
No abstract record available.
Inventors
- 👤 Arthur J Barry
- 👤 Donald E Hook
- 👤 Pree Lee De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:01
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/12; C07F7/14; C08; C08G; C08G77/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
THE PROCESS WHICH COMPRISES REACTING A POLYOLEFINE WITH TRICHLOROSILANE AT A PRESSURE OF AT LEAST 200 POUNDS PER SQUARE INCH, AND A TEMPERATURE BELOW 385* C., IN THE ABSENCE OF CATALYSTS FOR EFFECTING THE POLYMERIZATION OF OLEFINES AND IN THE ABSENCE OF CATALYSTS FOR FRIEDELCRAFTS REACTIONS.
Claim 2
Dependent Claim
46 words
THE PROCESS WHICH COMPRISES REACTING A POLYOLEFINE WITH TRICHLOROSILANE AT A PRESSURE OF AT LEAST 200 POUNDS PER SQUARE INCH, AND A TEMPERATURE BELOW 385* C., IN THE ABSENCE OF CATALYSTS FOR EFFECTING THE POLYMERIZATION OF OLEFINES AND IN THE ABSENCE OF CATALYSTS FOR FRIEDELCRAFTS REACTIONS.
References Cited (Backward Citations)
US2224359A
Cited
US2306222A
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US2381000A
Cited
US2379821A
Cited
US2405019A
Cited
US2407181A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-01-20 | 1956-07-21 | 1957-01-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-01-20 | 1960-07-21 | 1961-01-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-01-20 | 1964-07-21 | 1965-01-20 | $7700.00 | Window Closed / Lapsed |