US2589317A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nonfoaming oil composition containing polymeric silicone
Assignee: Standard Oil Development Co
•
Filing: 1945-01-10
•
Granted: 1952-03-18
•
Expires: 1965-01-10
Abstract
No abstract record available.
Inventors
- 👤 David W Young
- 👤 Gallo Salvatore George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:31
CPC Classifications
C; C10; C10M; C10M171/00; C10M171/004; C10M2219/00; C10M2219/04; C10M2219/044; C10M2229/00; C10M2229/04; C10M2229/041; C10N; C10N2020/00; C10N2020/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
77 words
AN IMPROVED OIL COMPOSITION COMPRISING A MAJOR PROPORTION OF A HYDROCARBON OIL OF THE GAS OIL TO LUBRICATING OIL VISCOSITY RANGE, HAVING DISSOLVED THEREIN A FOAM-REDUCING AMOUNT OF AN OIL-SOLUBLE SOLID GEL REPOLYMERIZATION PRODUCT OF A LIQUID HYDROCARBON-SILICONE POLYMER, SAID REPOLYMERIZATION PRODUCT HAVING BEEN FORMED THROUGH THE USE OF A BROMINE-CONTAINING CATALYST AT A TEMPERATURE OF ABOUT 0 TO 200* C., SAID BROMINE-CONTAINING CATALYST BEING SELECTED FROM THE GROUP CONSISTING OF ELEMENTAL BROMINE AND FRIEDEL-CRAFTS METAL BROMIDES.
Claim 2
Dependent Claim
77 words
AN IMPROVED OIL COMPOSITION COMPRISING A MAJOR PROPORTION OF A HYDROCARBON OIL OF THE GAS OIL TO LUBRICATING OIL VISCOSITY RANGE, HAVING DISSOLVED THEREIN A FOAM-REDUCING AMOUNT OF AN OIL-SOLUBLE SOLID GEL REPOLYMERIZATION PRODUCT OF A LIQUID HYDROCARBON-SILICONE POLYMER, SAID REPOLYMERIZATION PRODUCT HAVING BEEN FORMED THROUGH THE USE OF A BROMINE-CONTAINING CATALYST AT A TEMPERATURE OF ABOUT 0 TO 200* C., SAID BROMINE-CONTAINING CATALYST BEING SELECTED FROM THE GROUP CONSISTING OF ELEMENTAL BROMINE AND FRIEDEL-CRAFTS METAL BROMIDES.
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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) | 1955-03-18 | 1955-09-17 | 1956-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-03-18 | 1959-09-17 | 1960-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-03-18 | 1963-09-17 | 1964-03-18 | $7700.00 | Window Closed / Lapsed |