US2628242A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organosilicon compositions
Assignee: Dow Silicones Corp
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Filing: 1949-02-23
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Granted: 1953-02-10
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Expires: 1969-02-23
Abstract
No abstract record available.
Inventors
- 👤 Harold A Clark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:52
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0803
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
A COMPOUND HAVING THE FORMULA R''3SIRSIR''3 WHERE EACH R'' IS A MONOVALENT HYDROCARBON RADICAL SELECTED FROM THE GROUP CONSISTING OF PHENYL AND METHYL RADICALS, AND R IS A DI-VALENT ORGANIC RADICAL SELECTED FROM THE GROUP CONSISTING OF -C6H4-, -C6H4C6H4- AND -C6H4OC6H4-.
Claim 2
Dependent Claim
41 words
A COMPOUND HAVING THE FORMULA R''3SIRSIR''3 WHERE EACH R'' IS A MONOVALENT HYDROCARBON RADICAL SELECTED FROM THE GROUP CONSISTING OF PHENYL AND METHYL RADICALS, AND R IS A DI-VALENT ORGANIC RADICAL SELECTED FROM THE GROUP CONSISTING OF -C6H4-, -C6H4C6H4- AND -C6H4OC6H4-.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-02-10 | 1956-08-11 | 1957-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-10 | 1960-08-11 | 1961-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-10 | 1964-08-11 | 1965-02-10 | $7700.00 | Window Closed / Lapsed |