US2831782A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricants for coating and working light metals
Assignee: Dow Chemical Co
•
Filing: 1954-05-21
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Granted: 1958-04-22
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Expires: 1974-05-21
Abstract
No abstract record available.
Inventors
- 👤 Carl M Zvanut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:24
CPC Classifications
C; C10; C10M; C10M3/00; C10M2201/00; C10M2201/02; C10M2201/06; C10M2201/063; C10M2201/085; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/022; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/105; C10M2209/109; C10M2219/00; C10M2219/04; C10M2219/042; C10M2219/044; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10N; C10N2010/00; C10N2010/02; C10N2070/00; C10N2070/02; C10N2080/00; Y; Y10; Y10S; Y10S156/00; Y10S156/91; Y10T; Y10T29/00; Y10T29/49; Y10T29/4998; Y10T29/49982
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
122 words
IN A METHOD OF HOT WORKING THE LIGHT METALS, ALUMINUM, MAGNESIUM, AND ALLOYS CONTAINING AT LEAST 70 PERCENT BY WEIGHT OF ONE OF SUCH MATERIALS BY THE ACTION OF A TOOL, SAID METHOD BEING CARRIED OUT AT A HOT WORKING TEMPERATURE ABOVE ABOUT 450*F., THE IMPROVEMENT WHICH CONSISTS OF CONTROLLING TOOL CONTAMINATION AND THE EFFECTS THEREOF BY APPLYING TO THE SURFACE OF THE LIGHT METAL TO BE WORKED A SUBSTANCE SELECTED FROM THE CLASS CONSISTING OF ALKALI AND ALKALINE EARTH METAL MONOALKYL PHOSPHATES HAVING FROM 8 TO 20 CARBON ATOMS IN THE MOLECUE, SAID SUBSTANCE BEING STABILIZED AGAINST THERMAL DECOMPOSITION BY INCORPORATION THEREIN OF AN EFFECTIVE AMOUNT OF A HYDROXIDE SELECTED FROM THE CLASS CONSISTING OF ALKALI AND ALKALINE EARTH METAL HYDROXIDES.
Claim 2
Dependent Claim
122 words
IN A METHOD OF HOT WORKING THE LIGHT METALS, ALUMINUM, MAGNESIUM, AND ALLOYS CONTAINING AT LEAST 70 PERCENT BY WEIGHT OF ONE OF SUCH MATERIALS BY THE ACTION OF A TOOL, SAID METHOD BEING CARRIED OUT AT A HOT WORKING TEMPERATURE ABOVE ABOUT 450*F., THE IMPROVEMENT WHICH CONSISTS OF CONTROLLING TOOL CONTAMINATION AND THE EFFECTS THEREOF BY APPLYING TO THE SURFACE OF THE LIGHT METAL TO BE WORKED A SUBSTANCE SELECTED FROM THE CLASS CONSISTING OF ALKALI AND ALKALINE EARTH METAL MONOALKYL PHOSPHATES HAVING FROM 8 TO 20 CARBON ATOMS IN THE MOLECUE, SAID SUBSTANCE BEING STABILIZED AGAINST THERMAL DECOMPOSITION BY INCORPORATION THEREIN OF AN EFFECTIVE AMOUNT OF A HYDROXIDE SELECTED FROM THE CLASS CONSISTING OF ALKALI AND ALKALINE EARTH METAL HYDROXIDES.
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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) | 1961-04-21 | 1961-10-21 | 1962-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-21 | 1965-10-21 | 1966-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-21 | 1969-10-21 | 1970-04-22 | $7700.00 | Window Closed / Lapsed |