US3280160A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Siloxane-oxyalkylene block copolymers
Assignee: Union Carbide Corp
•
Filing: 1965-03-30
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Granted: 1966-10-18
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Expires: 1985-03-30
Abstract
No abstract record available.
Inventors
- 👤 Donald L Bailey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:44
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/643; C; C08; C08G; C08G77/00; C08G77/42; C08G77/46; Y; Y10; Y10S; Y10S525/00; Y10S525/925
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
23 words
A SILOXANE-OXYALKYLENE BLOCK COMPOLYMER CONSISTING ESSENTIALLY OF (A) AT LAST ONE SILOXANE BLOCK CONTAINING AT LEAST ONE SILOXANE UNIT REPRESENTED BY THE FORMULA:
Claim 2
Dependent Claim
23 words
A SILOXANE-OXYALKYLENE BLOCK COMPOLYMER CONSISTING ESSENTIALLY OF (A) AT LAST ONE SILOXANE BLOCK CONTAINING AT LEAST ONE SILOXANE UNIT REPRESENTED BY THE FORMULA:
References Cited (Backward Citations)
US2783262A
Cited
US2958707A
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US2846458A
Cited
GB802467A
Cited
US2868824A
Cited
FR1179743A
Cited
US3057901A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-17 | 1970-04-18 | 1970-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-17 | 1974-04-18 | 1974-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-17 | 1978-04-18 | 1978-10-18 | $7700.00 | Window Closed / Lapsed |