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US3457290A
Expired / Lapsed
US
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Preparation of trisiloxanes
Assignee: General Electric Co
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Filing: 1966-12-19
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Granted: 1969-07-22
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Expires: 1986-12-19
Abstract
No abstract record available.
Inventors
- 👤 Terry G Selin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:04
CPC Classifications
C; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/12; C07F7/0834; C07F7/0838; C07F7/0872; C07F7/0874; C07F7/0896
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3337497A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-07-21 | 1973-01-20 | 1973-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-21 | 1977-01-20 | 1977-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-21 | 1981-01-20 | 1981-07-22 | $7700.00 | Window Closed / Lapsed |