US3233442A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and compositions for rolling light metals
Assignee: Dow Chemical Co
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Filing: 1960-03-21
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Granted: 1966-02-08
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Expires: 1980-03-21
Abstract
No abstract record available.
Inventors
- 👤 Carl M Zvanut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:38
CPC Classifications
B; B21; B21B; B21B45/00; B21B45/02; B21B45/0239; B21B45/0242; C; C10; C10M; C10M173/00; C10M173/02; C10M2201/00; C10M2201/02; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/105; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10N; C10N2010/00; C10N2010/02; C10N2040/00; C10N2040/20; C10N2040/24; C10N2040/241; C10N2040/242; C10N2040/243; C10N2040/244; C10N2040/245; C10N2040/246; C10N2040/247; C10N2050/00; C10N2050/01; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
IN A METHOD OF ROLLING THE LIGHT METALS, ALUMINUM, MAGNESIUM AND ALLOYS CONTAINING AT LEAST 70 PERCENT BY WEIGHT OF ONE OF SUCH METALS, THE IMPROVEMENT WHICH CONSISTS OF CONTROLLING ROLL CONTAMINATION AND THE EFFECTS THEREOF BY SUPPLYING AT THE INTERFACE OF THE ROLL AND METAL, A LUBRICANT CONSISTING ESSENTIALLY OF A MAJOR PROPORTION OF A POLYPROPYLENE GLYCOL HAVING A MOLECULAR WEIGHT OF ABOUT 300 TO 1000 AND A MINOR PROPORTION OF AN ALKALI METAL ALKYL PHOSPHATE HAVING ABOUT 8 TO 18 CARBON ATOMS IN THE MOLECULE.
Claim 2
Dependent Claim
87 words
IN A METHOD OF ROLLING THE LIGHT METALS, ALUMINUM, MAGNESIUM AND ALLOYS CONTAINING AT LEAST 70 PERCENT BY WEIGHT OF ONE OF SUCH METALS, THE IMPROVEMENT WHICH CONSISTS OF CONTROLLING ROLL CONTAMINATION AND THE EFFECTS THEREOF BY SUPPLYING AT THE INTERFACE OF THE ROLL AND METAL, A LUBRICANT CONSISTING ESSENTIALLY OF A MAJOR PROPORTION OF A POLYPROPYLENE GLYCOL HAVING A MOLECULAR WEIGHT OF ABOUT 300 TO 1000 AND A MINOR PROPORTION OF AN ALKALI METAL ALKYL PHOSPHATE HAVING ABOUT 8 TO 18 CARBON ATOMS IN THE MOLECULE.
References Cited (Backward Citations)
US2328540A
Cited
US2349395A
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US2590451A
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US2665312A
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US2659252A
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US2831782A
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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) | 1969-02-07 | 1969-08-09 | 1970-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-07 | 1973-08-09 | 1974-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-07 | 1977-08-09 | 1978-02-08 | $7700.00 | Window Closed / Lapsed |