US2529189A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating metal surfaces during cold working
Assignee: Gulf Research and Development Co
•
Filing: 1948-04-07
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Granted: 1950-11-07
•
Expires: 1968-04-07
Abstract
No abstract record available.
Inventors
- 👤 Albert G Rocchini
- 👤 Richard J Neely
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 07:40
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/062; C10N; C10N2040/00; C10N2040/20; C10N2040/24; C10N2040/241; C10N2040/242; C10N2040/243; C10N2040/244; C10N2040/245; C10N2040/246; C10N2040/247
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A METAL FINISHING PROCESS WHICH COMPRISES COLD WORKING A METAL WHILE MAINTAINING ON THE SURFACES OF SAID METAL A FILM OF LUBRICANT CONSISTING ESSENTIALLY OF A PETROLEUM LUBRICATING OIL WHICH WOULD NORMALLY TEND TO STAIN SAID METAL SURFACES DURING THE ANNEALING THEREOF AND BETWEEN ABOUT 1.0 AND 10.0 PER CENT BY WEIGHT OF AN ANILINE DERIVATIVE REPRESENTED BY THE STRUTURAL FORMULA:
Claim 2
Dependent Claim
61 words
A METAL FINISHING PROCESS WHICH COMPRISES COLD WORKING A METAL WHILE MAINTAINING ON THE SURFACES OF SAID METAL A FILM OF LUBRICANT CONSISTING ESSENTIALLY OF A PETROLEUM LUBRICATING OIL WHICH WOULD NORMALLY TEND TO STAIN SAID METAL SURFACES DURING THE ANNEALING THEREOF AND BETWEEN ABOUT 1.0 AND 10.0 PER CENT BY WEIGHT OF AN ANILINE DERIVATIVE REPRESENTED BY THE STRUTURAL FORMULA:
References Cited (Backward Citations)
US2258930A
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US2257869A
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US2430400A
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US2403238A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-11-06 | 1954-05-08 | 1954-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-06 | 1958-05-08 | 1958-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-06 | 1962-05-08 | 1962-11-07 | $7700.00 | Window Closed / Lapsed |