US3560544A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Triorganosiloxy endblocked polyoxyalkylene siloxane polymers
Assignee: Dow Silicones Corp
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Filing: 1968-04-01
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Granted: 1971-02-02
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Expires: 1988-04-01
Abstract
Abstract THE COMPOSITIONS ARE OF THE CLASS OF TRIORGANOSILOXY ENDBLOCKED POLYOXYALKYLENE SILOXANE POLYMERS AND SALTS THEREOF. IT HAS BEEN FOUND THAT THE COMPOSITIONS DESCRIBED HEREIN ARE PARTICULARLY USEFUL AS SURFACTANTS. ILLUSTRATIVE OF THE COMPOSITION IN QUESTION IS A COMPOUND OF THE FORMULA (CH3-)3-SI-(O-SI(-CH3)(-(CH2)3-(O-CH2-CH2)12-OOC-(CH2)2- COOH))2-O-SI(-CH3)3.
Inventors
- 👤 Loren A Haluska
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:15
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/42; C08G77/46; Y; Y10; Y10S; Y10S516/00; Y10S516/01; Y10S516/06
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) | 1974-02-01 | 1974-08-03 | 1975-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-01 | 1978-08-03 | 1979-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-01 | 1982-08-03 | 1983-02-02 | $7700.00 | Window Closed / Lapsed |