US3555069A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spiroheterocyclic pentacoordinate silicon compounds
Assignee: Dow Silicones Corp
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Filing: 1968-12-17
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Granted: 1971-01-12
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Expires: 1988-12-17
Abstract
Abstract SPIROHETEROCYLIC PENTACOORDINATE SILICON COMPOUNDS USEFUL AS CORROSION INHIBITORS AND ANTIOXIDANTS IN LUBRICANTS ARE DISCLOSED.
Inventors
- 👤 Cecil L Frye
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:57
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/18; C07F7/1804; C10M2227/00; C10M2227/04; C10N; C10N2050/00; C10N2050/10
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) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |