US2545113A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Addition agents for mineral oil lubricants
Assignee: Gulf Oil Corp
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Filing: 1947-12-08
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Granted: 1951-03-13
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Expires: 1967-12-08
Abstract
No abstract record available.
Inventors
- 👤 Herschel G Smith
- 👤 Troy L Cantrell
- 👤 John G Peters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:43
CPC Classifications
C; C07; C07C; C07C213/00; C07C213/08; C10; C10M; C10M1/00; C10M1/08; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/062; C10N; C10N2010/00; C10N2010/04; C10N2040/00; C10N2040/02; C10N2040/135; C10N2050/00; C10N2050/10; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
THE PROCESS WHICH COMPRISES REACTING AN AQUEOUS SLURRY OF 1 MOL OF A METAL HYDROXIDE SELECTED FROM THE GROUP CONSISTING OF BARIUM, STRONTIUM, MAGNESIUM AND CALCIUM HYDROXIDES WITH FROM 2 TO 4 MOLS OF FORMALDEHYDE AT A TEMPERATURE NOT EXCEEDING 200* F. AND CONDENSING THE RESULTING PRODUCT AT A TEMPERATURE NOT EXCEEDING ABOUT 200* WITH FROM 0.5 TO 1 MOL OF ANILINE AND FROM 2 TO 4 MOLS OF A MONO-ALKYL PHENOL HAVING FROM 4 TO 12 CARBON ATOMS IN THE ALKYL SUBSTITUENT.
Claim 2
Dependent Claim
83 words
THE PROCESS WHICH COMPRISES REACTING AN AQUEOUS SLURRY OF 1 MOL OF A METAL HYDROXIDE SELECTED FROM THE GROUP CONSISTING OF BARIUM, STRONTIUM, MAGNESIUM AND CALCIUM HYDROXIDES WITH FROM 2 TO 4 MOLS OF FORMALDEHYDE AT A TEMPERATURE NOT EXCEEDING 200* F. AND CONDENSING THE RESULTING PRODUCT AT A TEMPERATURE NOT EXCEEDING ABOUT 200* WITH FROM 0.5 TO 1 MOL OF ANILINE AND FROM 2 TO 4 MOLS OF A MONO-ALKYL PHENOL HAVING FROM 4 TO 12 CARBON ATOMS IN THE ALKYL SUBSTITUENT.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-03-12 | 1954-09-11 | 1955-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-03-12 | 1958-09-11 | 1959-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-03-12 | 1962-09-11 | 1963-03-13 | $7700.00 | Window Closed / Lapsed |