Patent US2565981A successfully refreshed from Google Patents.
US2565981A
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Production of lubricating grease
Assignee: Standard Oil Development Co
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Filing: 1949-02-18
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Granted: 1951-08-28
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Expires: 1969-02-18
Abstract
No abstract record available.
Inventors
- 👤 Arnold J Morway
- 👤 Hollis L Leland
- 👤 Gordon W Duncan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:06
CPC Classifications
C; C10; C10M; C10M5/00; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/026; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/28; C10M2207/281; C10M2207/282; C10M2207/283; C10M2207/284; C10M2207/285; C10M2207/286; C10M2207/34; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/064; C10M2215/065; C10M2219/00; C10M2219/06; C10N; C10N2010/00; C10N2010/02; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
THE PROCESS OF PREPARING LUBRICATING GREASE CONTAINING AN ALKALI METAL SALT OF A LOW MOLECULAR WEIGHT MONOCARBOXYLIC ACID WHICH COMPRISES THE STEPS OF ADDING 0.1 TO 8% BY WEIGHT, BASED ON THE FINAL COMPOSITION OF A C1 AND C4 ALIPHATIC ALCOHOL ESTER OF SAID MONOCARBOXYLIC ACID TO A HYDROCARBON LUBRICATING OIL AND 5 TO 30% OF A SAPONIFIABLE FATTY MATERIAL, THEREAFTER ADDING SAPONIFYING AGENT AT AN ELEVATED TEMPERATURE OF 150 TO 200* F., IN QUANTITY SUFFICIENT TO SUBSTANTIALLY HYDROLYZE AND NEUTRALIZE SAID ESTER AND SAID FATTY MATERIAL, AND FINALLY COOKING THE INGREDIENTS TO EVAPORATE WATER AND OTHER VOLATILE INGREDIENTS AND TO FORM A GREASE STRUCTURE.
Claim 2
Dependent Claim
105 words
THE PROCESS OF PREPARING LUBRICATING GREASE CONTAINING AN ALKALI METAL SALT OF A LOW MOLECULAR WEIGHT MONOCARBOXYLIC ACID WHICH COMPRISES THE STEPS OF ADDING 0.1 TO 8% BY WEIGHT, BASED ON THE FINAL COMPOSITION OF A C1 AND C4 ALIPHATIC ALCOHOL ESTER OF SAID MONOCARBOXYLIC ACID TO A HYDROCARBON LUBRICATING OIL AND 5 TO 30% OF A SAPONIFIABLE FATTY MATERIAL, THEREAFTER ADDING SAPONIFYING AGENT AT AN ELEVATED TEMPERATURE OF 150 TO 200* F., IN QUANTITY SUFFICIENT TO SUBSTANTIALLY HYDROLYZE AND NEUTRALIZE SAID ESTER AND SAID FATTY MATERIAL, AND FINALLY COOKING THE INGREDIENTS TO EVAPORATE WATER AND OTHER VOLATILE INGREDIENTS AND TO FORM A GREASE STRUCTURE.
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) | 1954-08-27 | 1955-02-26 | 1955-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-27 | 1959-02-26 | 1959-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-27 | 1963-02-26 | 1963-08-28 | $7700.00 | Window Closed / Lapsed |