US2844538A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Extreme pressure lubricant
Assignee: Texaco Inc
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Filing: 1955-09-16
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Granted: 1958-07-22
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Expires: 1975-09-16
Abstract
No abstract record available.
Inventors
- 👤 Robert H Krug
- 👤 Otto C Elmer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:23
CPC Classifications
C; C07; C07C; C07C205/00; C07C205/13; C07C205/26; C07C205/39; C07C205/40; C10; C10M; C10M1/00; C10M1/08; C10M2207/00; C10M2207/28; C10M2207/282; C10M2207/30; C10M2207/302; C10M2207/304; C10M2207/34; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/104; C10M2215/00; C10M2215/14; C10M2215/20; C10M2215/202; C10M2219/00; C10M2219/08; C10M2219/082; C10M2219/085; C10M2219/10; C10M2219/104; C10M2219/108; C10N; C10N2030/00; C10N2030/08; C10N2040/00; C10N2040/12; C10N2040/13; C10N2040/20; C10N2040/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
39 words
AN IMPROVED LUBRICANT COMPOSITION COMPRISING A MAJOR AMOUNT OF A BASE OIL SELECTED FROM THE GROUP CONSISTING OF MINERAL LUBRICATING OILS AND POLYESTERS OF ALIPHATIC CARBOXYLIC ACIDS AND A MINOR AMOUNT OF A COMPOUND HAVING THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
39 words
AN IMPROVED LUBRICANT COMPOSITION COMPRISING A MAJOR AMOUNT OF A BASE OIL SELECTED FROM THE GROUP CONSISTING OF MINERAL LUBRICATING OILS AND POLYESTERS OF ALIPHATIC CARBOXYLIC ACIDS AND A MINOR AMOUNT OF A COMPOUND HAVING THE FOLLOWING GENERAL 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) | 1961-07-21 | 1962-01-20 | 1962-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-21 | 1966-01-20 | 1966-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-21 | 1970-01-20 | 1970-07-22 | $7700.00 | Window Closed / Lapsed |