US2981686A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal working lubricants
Assignee: Shell USA Inc
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Filing: 1958-10-30
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Granted: 1961-04-25
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Expires: 1978-10-30
Abstract
No abstract record available.
Inventors
- 👤 Thomas E Reamer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:55
CPC Classifications
C; C10; C10M; C10M173/00; C10M173/02; C10M2201/00; C10M2201/02; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/107; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2219/00; C10M2219/08; C10M2219/082; C10M2219/085; C10M2219/10; C10M2219/102; C10M2219/104; C10M2219/106; C10M2229/00; C10M2229/04; C10M2229/041; C10N; C10N2010/00; C10N2010/02; C10N2020/00; C10N2020/01; C10N2040/00; C10N2040/20; C10N2040/22; C10N2050/00; C10N2050/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
AN AQUEOUS METAL-WORKING LUBRICANT COMPRISING A MAJOR AMOUNT OF WATER AND FROM ABOUT 0.5% TO 15% EACH OF (1) A WATER-SOLUBLE NORMAL ALKALI METAL SALT OF AN ALKYLENE POLY(MERCAPTOALKYLENE CARBOXYLIC ACID), SAID COMPOUND HAVING FROM 1 TO 4 CARBOXYL GROUPS IN THE MOLECULE AND THE ALKYLENE RADICAL BEING SELECTED FROM THE GROUP OF METHYLENE, ETHYLENE AND BUTYLENE RADICALS, (2) A WATER-SOLUBLE HETERO-COPOLYMER OF MIXTURE OF RANDOMLY DISTRIBUTED ETHYLENE AND PROPYLENE OXIDES IN THE MOLECULAR RATIO OF FROM 75:25 TO 10:90, RESPECTIVELY, HAVING A MOLECULAR WEIGHT OF FROM ABOUT 250 TO ABOUT 1500, AND (3) A WATER-SOLUBLE ALKANOLAMINE.
Claim 2
Dependent Claim
97 words
AN AQUEOUS METAL-WORKING LUBRICANT COMPRISING A MAJOR AMOUNT OF WATER AND FROM ABOUT 0.5% TO 15% EACH OF (1) A WATER-SOLUBLE NORMAL ALKALI METAL SALT OF AN ALKYLENE POLY(MERCAPTOALKYLENE CARBOXYLIC ACID), SAID COMPOUND HAVING FROM 1 TO 4 CARBOXYL GROUPS IN THE MOLECULE AND THE ALKYLENE RADICAL BEING SELECTED FROM THE GROUP OF METHYLENE, ETHYLENE AND BUTYLENE RADICALS, (2) A WATER-SOLUBLE HETERO-COPOLYMER OF MIXTURE OF RANDOMLY DISTRIBUTED ETHYLENE AND PROPYLENE OXIDES IN THE MOLECULAR RATIO OF FROM 75:25 TO 10:90, RESPECTIVELY, HAVING A MOLECULAR WEIGHT OF FROM ABOUT 250 TO ABOUT 1500, AND (3) A WATER-SOLUBLE ALKANOLAMINE.
References Cited (Backward Citations)
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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) | 1964-04-24 | 1964-10-24 | 1965-04-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-24 | 1968-10-24 | 1969-04-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-24 | 1972-10-24 | 1973-04-25 | $7700.00 | Window Closed / Lapsed |