US3383315A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyalkylene glycol-diorthosilicic acid ester lubricants and power transmitting fluids
Assignee: Ruhrchemie AG
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Filing: 1965-08-31
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Granted: 1968-05-14
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Expires: 1985-08-31
Abstract
No abstract record available.
Inventors
- 👤 Gothel Herbert
- 👤 Noeske Heinz
- 👤 Feichtinger Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:06
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C07; C07F; C07F7/00; C07F7/02; C07F7/04; C10M2207/00; C10M2207/28; C10M2207/282; C10M2207/34; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/104; C10M2219/00; C10M2219/10; C10M2219/104; C10M2219/108; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2227/00; C10M2227/02; C10N; C10N2030/00; C10N2030/08; C10N2040/00; C10N2040/12; C10N2040/13
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
16 words
A LUBRICATING OIL COMPRISING 5 TO 70 VOLUME-PERCENT OF A DIORTHOSILICIC ACID ESTER OF THE FORMULA:
Claim 2
Dependent Claim
16 words
A LUBRICATING OIL COMPRISING 5 TO 70 VOLUME-PERCENT OF A DIORTHOSILICIC ACID ESTER OF THE FORMULA:
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) | 1971-05-14 | 1971-11-13 | 1972-05-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-14 | 1975-11-13 | 1976-05-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-14 | 1979-11-13 | 1980-05-14 | $7700.00 | Window Closed / Lapsed |