US3801618A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for alkyl orthosilicate
Assignee: Chevron USA Inc
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Filing: 1973-06-06
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Granted: 1974-04-02
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Expires: 1993-06-06
Abstract
Abstract AN IMPROVED PROCESS FOR THE PREPARATION OF ALKYL ORTHOSILICATE FROM ALKANOL AND SILICON TETRACHLORIDE WHICH INCLUDES THE STEPS OF CHANGING SILICON TETRACHLORIDE TO THE REACTORAFTER THE INTRODUCTION OF ALKANOL HAS COMMENCED, MAINTAINING A TEMPERATURE WHICH ACHIEVES A HOMOGENEOUS SYSTEM THROUGHOUT THE REACTION WHILE REMOVING UNREACTED ALKANOL AND HCI.
Inventors
- 👤 J Walker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 00:53
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/04
Claims Analysis
Total Claims: 0
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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) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |