US2957826A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Grease composition thickened with a metal n-substituted carbamate
Assignee: Pure Oil Co
•
Filing: 1958-09-22
•
Granted: 1960-10-25
•
Expires: 1978-09-22
Abstract
No abstract record available.
Inventors
- 👤 Thomas W Martinek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:23
CPC Classifications
C; C10; C10M; C10M5/00; C10M2207/00; C10M2207/28; C10M2207/282; C10M2207/34; C10M2209/00; C10M2209/10; C10M2209/103; C10M2215/00; C10M2215/08; C10M2215/082; C10M2215/24; C10M2215/28; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2227/00; C10M2227/02; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/05; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2010/06; C10N2010/08; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
81 words
A METHOD OF PREPARING A METAL N-SUBSTITUTED CARBAMATE-THICKENED GREASE WHICH COMPRISES REACTING A DISPERSION OF A FINELY-DIVIDED METAL OF THE GROUP CONSISTING OF ALKALI AND ALKALINE EARTH METALS, ALUMINUM, TIN, AND LEAD, IN AN OLEGINOUS LUBRICATING LIQUID OF LUBRICATING VISCOSITY WITH SUFFICIENT CO2 AND R2NH, WHERE R IS OF THE GROUP CONSISTING OF HYDROGEN AND C1-C30 ALKYL AND ARALKYL RADICALS, AT LEAST ONE R BEING A C1-C30 RADICAL, TO FORM A METAL N-SUBSTITUTED CARBAMATE SALT IN SITU AND PRODUCE A GREASE.
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) | 1963-10-25 | 1964-04-25 | 1964-10-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-25 | 1968-04-25 | 1968-10-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-25 | 1972-04-25 | 1972-10-25 | $7700.00 | Window Closed / Lapsed |