US3629310A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organo-siloxane-oxyalkylene block copolymers
Assignee: Union Carbide Corp
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Filing: 1969-08-28
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Granted: 1971-12-21
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Expires: 1989-08-28
Abstract
Abstract ORGANOSILOXANE-OXYALKYLENE BLOCK COPOLYMERS WHERE THE SILOXANE BLOCKS ARE COMPOSED OF DIFUNCTIONAL AND/OR TRIFUNCTIONAL SI ATOMS AND THE OXYALKYLENE BLOCKS CONTAIN AT LEAST FIVE OXYALKYLENE UNITS AND ARE DERIVED FROM A TRIOL ARE DISCLOSED. THE COPOLYMERS ARE USEFUL AS MOLD RELEASE AGENTS, HYDRAULIC FLUIDS, LUBRICANTS, EMULSIFIER, AND SURFACTANTS.
Inventors
- 👤 Donald L Bailey
- 👤 Francis M O'connor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:36
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/42; C08G77/46; H; H01; H01F; H01F27/00; H01F27/28; H01F27/288; H01F27/2885; Y; Y10; Y10S; Y10S516/00; Y10S516/01
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) | 1974-12-20 | 1975-06-21 | 1975-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-20 | 1979-06-21 | 1979-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-20 | 1983-06-21 | 1983-12-21 | $7700.00 | Window Closed / Lapsed |