US2813077A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prevention of foaming in lubricants
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1955-03-25
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Granted: 1957-11-12
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Expires: 1975-03-25
Abstract
No abstract record available.
Inventors
- 👤 Dilworth T Rogers
- 👤 John P Mcdermott
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:37
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2201/00; C10M2201/10; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/08; C10M2219/082; C10M2219/087; C10M2219/088; C10M2219/089; C10M2223/00; C10M2223/12; C10M2223/121; C10N; C10N2040/00; C10N2040/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
THE PROCESS FOR REDUCING THE FOAMING TENDENCY OFF HYDROCARBON OIL COMPOSITIONS CONTAINING A DETERGENT ADDITIVE COMPRISING A MINERAL OIL SOLUTION OF CALCIUM PETROLEUM SULFONATE AND A SULFIDE TAKEN FROM THE GROUP CONSISTING OF BARIUM TERTIARY OCTYL PHENOL SULFIDE AND PHOSPHOSULFURIZED BARIUM TERTIARY OCTYL PHENOL SULFIDE, WHICH COMPRISES MIXING SAID ADDITIVE WITH A SOLUTION OF ABOUTT 0,001-1 WT. PERCENT, BASED ON THE ADDITIVE, OF DIHYDRO DICHLORO SILANE IN AN ORGANIC SOLVENT, REMOVING THE SOLVENT TO LEAVE A RESIDUE, AND INCORPORATING SAID RESIDUE INTO SAID HYDROCARBON OIL.
Claim 2
Dependent Claim
85 words
THE PROCESS FOR REDUCING THE FOAMING TENDENCY OFF HYDROCARBON OIL COMPOSITIONS CONTAINING A DETERGENT ADDITIVE COMPRISING A MINERAL OIL SOLUTION OF CALCIUM PETROLEUM SULFONATE AND A SULFIDE TAKEN FROM THE GROUP CONSISTING OF BARIUM TERTIARY OCTYL PHENOL SULFIDE AND PHOSPHOSULFURIZED BARIUM TERTIARY OCTYL PHENOL SULFIDE, WHICH COMPRISES MIXING SAID ADDITIVE WITH A SOLUTION OF ABOUTT 0,001-1 WT. PERCENT, BASED ON THE ADDITIVE, OF DIHYDRO DICHLORO SILANE IN AN ORGANIC SOLVENT, REMOVING THE SOLVENT TO LEAVE A RESIDUE, AND INCORPORATING SAID RESIDUE INTO SAID HYDROCARBON OIL.
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) | 1960-11-11 | 1961-05-13 | 1961-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-11-11 | 1965-05-13 | 1965-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-11-11 | 1969-05-13 | 1969-11-12 | $7700.00 | Window Closed / Lapsed |