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Patent US2724698A successfully refreshed from Google Patents.
US2724698A
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Lubricating oil anti-foaming agent
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1950-12-01
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Granted: 1955-11-22
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Expires: 1970-12-01
Abstract
No abstract record available.
Inventors
- 👤 Allen R Kittleson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:05
CPC Classifications
C; C10; C10M; C10M171/00; C10M171/004; B; B01; B01D; B01D19/00; B01D19/02; B01D19/04; B01D19/0404; B01D19/0409; C10M2227/00; C10M2227/02; C10N; C10N2040/00; C10N2040/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A LIQUID OIL COMPOSITION HAVING A NORMAL TENDENCY TO FOAM UNDER CONDITIONS OF AGITATION AND CONTAINING A MINOR PROPORTION, SUFFICIENT TO REDUCE SAID TENDENCY SUBSTANTIALLY, OF A SUBSTANTIALLY OIL-INSOLUBLE STABLY DISPERSED NITROGEN-CONTAINING POLYMERIC CONDENSATION PRODUCT OF VISCOUS OIL CONSISTENCY OBTAINED BY MIXING SUBSTANTIALLY EQUIMOLAR PROPORTIONS OF DI-T-BUTOXYDIAMINO SILANE AND ETHYLENE GLYCOL AT ORDINARY TEMPERATURES UNTIL A SPONTANEOUS REACTION AND NH3 EVOLUTION TAKES PLACE AND UNTIL SAID EVOLUTION SUBSTANTIALLY CEASES.
Claim 2
Dependent Claim
69 words
A LIQUID OIL COMPOSITION HAVING A NORMAL TENDENCY TO FOAM UNDER CONDITIONS OF AGITATION AND CONTAINING A MINOR PROPORTION, SUFFICIENT TO REDUCE SAID TENDENCY SUBSTANTIALLY, OF A SUBSTANTIALLY OIL-INSOLUBLE STABLY DISPERSED NITROGEN-CONTAINING POLYMERIC CONDENSATION PRODUCT OF VISCOUS OIL CONSISTENCY OBTAINED BY MIXING SUBSTANTIALLY EQUIMOLAR PROPORTIONS OF DI-T-BUTOXYDIAMINO SILANE AND ETHYLENE GLYCOL AT ORDINARY TEMPERATURES UNTIL A SPONTANEOUS REACTION AND NH3 EVOLUTION TAKES PLACE AND UNTIL SAID EVOLUTION SUBSTANTIALLY CEASES.
References Cited (Backward Citations)
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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) | 1958-11-21 | 1959-05-23 | 1959-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-21 | 1963-05-23 | 1963-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-21 | 1967-05-23 | 1967-11-22 | $7700.00 | Window Closed / Lapsed |