US2529191A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cold-working lubricant and lubricating metal surfaces therewith
Assignee: Gulf Research and Development Co
•
Filing: 1948-04-07
•
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
2026-10-29 06:13
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2203/00; C10M2203/06; C10N; C10N2040/00; C10N2040/20; C10N2040/24; C10N2040/241; C10N2040/242; C10N2040/243; C10N2040/244; C10N2040/245; C10N2040/246; C10N2040/247; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31714
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
29 words
AN IMPROVED COLD-WORKING LUBRICANT COMPRISING A PETROLEUM UBRICATING OIL NORMALLY TENDING TO STAIN METALS DURING THE ANNEALING THEREOF AND 0.5 TO 3.0 PER CENT BY WEIGHT OF TRISOPROPYL TOLUENE.
Claim 2
Dependent Claim
29 words
AN IMPROVED COLD-WORKING LUBRICANT COMPRISING A PETROLEUM UBRICATING OIL NORMALLY TENDING TO STAIN METALS DURING THE ANNEALING THEREOF AND 0.5 TO 3.0 PER CENT BY WEIGHT OF TRISOPROPYL TOLUENE.
References Cited (Backward Citations)
US2258930A
Cited
US2203044A
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US2344912A
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US2355993A
Cited
US2430400A
Cited
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 |