Patent US2906735A successfully refreshed from Google Patents.
US2906735A
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Preparation of organosilicon esters
Assignee: Dow Silicones Corp
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Filing: 1958-06-26
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Granted: 1959-09-29
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Expires: 1978-06-26
Abstract
No abstract record available.
Inventors
- 👤 John L Speier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:51
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0834; C07F7/0838; C07F7/0872; C07F7/0874; C07F7/0876; C08; C08G; C08G77/00; C08G77/48; C08G77/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
43 words
THE PROCESS WHICH COMPRISES REACTING (1) AN ORGANOSILICON COMPOUND SELECTED FROM THE GROUP CONSISTING OF (A) CYCLOSILALKOXANES HAVING THE GENERAL FORMULA (-SIR2CH2CHZ(CH2)NO-)X WHERE X HAS AN AVERAGE VALUE OF AT LEAST 1, (B) LINEAR POLYMERIC SILALKOXANES CONSISTING ESSEBTIALLY OF UNITS OF THE FORMULA
Claim 2
Dependent Claim
43 words
THE PROCESS WHICH COMPRISES REACTING (1) AN ORGANOSILICON COMPOUND SELECTED FROM THE GROUP CONSISTING OF (A) CYCLOSILALKOXANES HAVING THE GENERAL FORMULA (-SIR2CH2CHZ(CH2)NO-)X WHERE X HAS AN AVERAGE VALUE OF AT LEAST 1, (B) LINEAR POLYMERIC SILALKOXANES CONSISTING ESSEBTIALLY OF UNITS OF 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) | 1962-09-28 | 1963-03-30 | 1963-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-28 | 1967-03-30 | 1967-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-28 | 1971-03-30 | 1971-09-29 | $7700.00 | Window Closed / Lapsed |