US2738358A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of silicones
Assignee: Sued Chemie AG
•
Filing: 1952-10-20
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Granted: 1956-03-13
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Expires: 1972-10-20
Abstract
No abstract record available.
Inventors
- 👤 Wiberg Egon
- 👤 Buchheit Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:58
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
PROCESS FOR THE PRODUCTION OF SILICONES COMPRISING REACTING AT A TEMPERATURE ABOVE ABOUT 100* C. A FIRST COMPOUND SELECTED FROM THE GROUP CONSISTING OF ETHERS OF THE FORMULA ROR AND SILICIC ACID ESTERS OF THE FORMULA HNSI(OR)4-N, WHEREIN R IS A HYDROCABON RADICAL AND N IS ZERO OR ONE WITH A SECOND SILICON-HALOGEN COMPOUND OF THE GENERAL TYPE
Claim 2
Dependent Claim
58 words
PROCESS FOR THE PRODUCTION OF SILICONES COMPRISING REACTING AT A TEMPERATURE ABOVE ABOUT 100* C. A FIRST COMPOUND SELECTED FROM THE GROUP CONSISTING OF ETHERS OF THE FORMULA ROR AND SILICIC ACID ESTERS OF THE FORMULA HNSI(OR)4-N, WHEREIN R IS A HYDROCABON RADICAL AND N IS ZERO OR ONE WITH A SECOND SILICON-HALOGEN COMPOUND OF THE GENERAL TYPE
References Cited (Backward Citations)
US2426122A
Cited
US2521267A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-13 | 1959-09-12 | 1960-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-13 | 1963-09-12 | 1964-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-13 | 1967-09-12 | 1968-03-13 | $7700.00 | Window Closed / Lapsed |