US2917459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal-working lubricants
Assignee: Shell Development Co
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Filing: 1957-11-25
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Granted: 1959-12-15
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Expires: 1977-11-25
Abstract
No abstract record available.
Inventors
- 👤 Thomas E Reamer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:03
CPC Classifications
C; C10; C10M; C10M173/00; C10M173/02; C10M2201/00; C10M2201/02; C10M2201/085; C10M2219/00; C10M2219/04; C10M2219/044; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/05; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2010/08; C10N2010/14; C10N2010/16; C10N2040/00; C10N2040/20; C10N2040/22; C10N2050/00; C10N2050/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
AN AQUEOUS METAL-WORKING SOLUTION HAVING A PH NOT GREATER THAN 7 CONSISTING ESSENTIALLY OF FROM ABOUT 1% TO 25% BY WEIGHT OF A WATER-SOLUBLE HEAVY METAL SULFAMATE AND FROM ABOUT 0.01% TO ABOUT 5% BY WEIGHT OF A WATER-SOLUBLE ALKALI METAL ORTHO-PHOSPHATE AND THE BALANCE OF THE SOLUTION BEING WATER.
Claim 2
Dependent Claim
50 words
AN AQUEOUS METAL-WORKING SOLUTION HAVING A PH NOT GREATER THAN 7 CONSISTING ESSENTIALLY OF FROM ABOUT 1% TO 25% BY WEIGHT OF A WATER-SOLUBLE HEAVY METAL SULFAMATE AND FROM ABOUT 0.01% TO ABOUT 5% BY WEIGHT OF A WATER-SOLUBLE ALKALI METAL ORTHO-PHOSPHATE AND THE BALANCE OF THE SOLUTION BEING WATER.
References Cited (Backward Citations)
US2692859A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-12-14 | 1963-06-15 | 1963-12-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-12-14 | 1967-06-15 | 1967-12-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-12-14 | 1971-06-15 | 1971-12-15 | $7700.00 | Window Closed / Lapsed |