US2760933A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricants
Assignee: Standard Oil Co
•
Filing: 1952-11-25
•
Granted: 1956-08-28
•
Expires: 1972-11-25
Abstract
No abstract record available.
Inventors
- 👤 Ellis K Fields
- 👤 Clyde S Scanley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:22
CPC Classifications
C; C07; C07D; C07D285/00; C07D285/01; C07D285/02; C07D285/04; C07D285/12; C07D285/125; C10; C10M; C10M1/00; C10M1/08; C10M2201/00; C10M2201/04; C10M2201/043; C10M2205/00; C10M2205/02; C10M2205/024; C10M2205/026; C10M2207/00; C10M2207/28; C10M2207/282; C10M2207/34; C10M2209/00; C10M2209/10; C10M2209/103; C10M2219/00; C10M2219/02; C10M2219/022; C10M2219/024; C10M2219/10; C10M2219/102; C10M2219/104; C10M2219/106; C10M2223/00; C10M2223/12; C10M2223/121; C10M2225/00; C10M2225/04; C10M2225/041; C10N; C10N2040/00; C10N2040/14; C10N2040/16; C10N2040/17; C10N2050/00; C10N2050/10; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A COMPOSITION COMPRISING A MAJOR PROPORTION OF AN CLEAGINOUS MATERIAL CONTAINING A COMPOUND, NORMALLY CORROSIVE TO SILVER, SELECTED FROM THE GROUP CONSISTING OF ELEMENTAL SULFUR, A SULFUR-CONTAINING ORGANIC COMPOUND AND MIXTURES THEREOF, AND FROM ABOUT 0.02% TO ABOUT 15% OF A CARBOXYLIC ESTER OF 2.5-DIMERCAPTO-1,3,4-THIA DISAZOLE HAVING THE GENERAL FORMULA:
Claim 2
Dependent Claim
50 words
A COMPOSITION COMPRISING A MAJOR PROPORTION OF AN CLEAGINOUS MATERIAL CONTAINING A COMPOUND, NORMALLY CORROSIVE TO SILVER, SELECTED FROM THE GROUP CONSISTING OF ELEMENTAL SULFUR, A SULFUR-CONTAINING ORGANIC COMPOUND AND MIXTURES THEREOF, AND FROM ABOUT 0.02% TO ABOUT 15% OF A CARBOXYLIC ESTER OF 2.5-DIMERCAPTO-1,3,4-THIA DISAZOLE HAVING THE GENERAL FORMULA:
References Cited (Backward Citations)
US2690999A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-28 | 1960-02-27 | 1960-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-28 | 1964-02-27 | 1964-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-28 | 1968-02-27 | 1968-08-28 | $7700.00 | Window Closed / Lapsed |