Patent US3542901A successfully refreshed from Google Patents.
US3542901A
Expired / Lapsed
US
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Organosilicon compositions
Assignee: Midland Silicones Ltd
•
Filing: 1968-06-26
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Granted: 1970-11-24
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Expires: 1988-06-26
Abstract
No abstract record available.
Inventors
- 👤 Kenneth G Cooper
- 👤 Peter R A Hansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:37
CPC Classifications
C; C08; C08L; C08L83/00; C08L83/04; C08L83/14; C08G; C08G77/00; C08G77/04; C08G77/14; C08G77/16; C08G77/18; C08G77/70
Claims Analysis
Total Claims: 0
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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) | 1973-11-23 | 1974-05-25 | 1974-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-23 | 1978-05-25 | 1978-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-23 | 1982-05-25 | 1982-11-24 | $7700.00 | Window Closed / Lapsed |