Patent US3580940A successfully refreshed from Google Patents.
US3580940A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trisilylalkanes
Assignee: Monsanto Research Corp
•
Filing: 1969-08-25
•
Granted: 1971-05-25
•
Expires: 1989-08-25
Abstract
Abstract TRISILAALKANES OF THE FORMULA CH3-SI(-CH3)2-(CH2)X-SI(-CH3)2-(CH2)X-SI(-CH3)2-CH3 WHERE X=2-6, USEFUL AND FUNCTIONAL FLUIDS. THE AREAS OF UTILITY ARE HEAT-EXCHANGE MEDIA, GYRO FLUIDS, LUBRICANTS, ANTI-CORROSIVE AGENTS AND VISCOSITY-INDEX IMPROVERS.
Inventors
- 👤 James A Webster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:31
CPC Classifications
C; C10; C10M; C10M3/00; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/0803; C07F7/0805; C10M2207/00; C10M2207/04; C10M2209/00; C10M2209/02; C10M2209/10; C10M2209/103; C10M2211/00; C10M2211/02; C10M2227/00; C10M2227/04; C10N; C10N2040/00; C10N2040/06
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1974-05-24 | 1974-11-23 | 1975-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-24 | 1978-11-23 | 1979-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-24 | 1982-11-23 | 1983-05-25 | $7700.00 | Window Closed / Lapsed |