US3632828A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyethylene glycol monomethyl ether carbonates
Assignee: Dow Chemical Co
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Filing: 1968-12-16
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Granted: 1972-01-04
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Expires: 1988-12-16
Abstract
Abstract PLOYOXYETHYLENE GLYCOL MONOMETHYL ETHER CARBONATES HAVING THE FORMULA CH3-(O-CH2-CH2)X-OOC-O-(CH2-CH2-O)Y-CH3 WHEREIN X AND Y ARE INDEPENDENTLY 2 OR 3 ARE NEW COMPOUNDS THAT ARE USEFUL IN FORMULATING BRAKE FLUIDS AND AS SYNTHETIC LUBRICANTS.
Inventors
- 👤 Ludo K Frevel
- 👤 David F Gransden
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:11
CPC Classifications
C; C10; C10M; C10M105/00; C10M105/08; C10M105/32; C10M105/48; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/104; C10N; C10N2040/00; C10N2040/08
Claims Analysis
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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) | 1975-01-03 | 1975-07-05 | 1976-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-03 | 1979-07-05 | 1980-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-03 | 1983-07-05 | 1984-01-04 | $7700.00 | Window Closed / Lapsed |