US2599803A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating composition
Assignee: Shell Development Co
•
Filing: 1948-11-01
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Granted: 1952-06-10
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Expires: 1968-11-01
Abstract
No abstract record available.
Inventors
- 👤 Ballard Seaver Ames
- 👤 Morris Rupert Clarke
- 👤 John L Van Winkle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:31
CPC Classifications
C; C08; C08G; C08G65/00; C08G65/34; C08G65/48; C08G65/46; C10; C10M; C10M3/00; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/28; C10M2207/282; C10M2207/34; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/105; C10M2209/106; C10M2209/107; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/064; C10M2215/065; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2020/00; C10N2020/01; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
92 words
A STABLE LUBRICATING COMPOSITION COMPRISING AS THE MAJOR LUBRICATING CONSTITUENT THEREOF A LIQUID SATURATED ALIPHATIC ACID DIESTER OF A POLYALKYLENE GLYCOL, THE ALKYLENE UNITS OF SAID GLYCOL HAVING FROM 2 TO 20 CARBON ATOMS, THE MOLECULAR WEIGHT OF SAID GLYCOL BEING FROM ABOUT 400 TO ABOUT 1600, AND SAID ACID CONTAINING FROM 2 TO 20 CARBON ATOMS; AND 1-10% OF A LINEAR POLYMER OF AN ACRYLIC ACID ESTER SELECTED FROM THE GROUP CONSISTING OF ACRYLIC ACID ESTERS AND METHACRYLIC ACID ESTERS, HAVING AN AVERAGE MOLECULAR WEIGHT WITHIN THE RANGE 5,000 TO 25,000.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-06-10 | 1955-12-10 | 1956-06-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-06-10 | 1959-12-10 | 1960-06-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-06-10 | 1963-12-10 | 1964-06-10 | $7700.00 | Window Closed / Lapsed |