US2575298A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Steam generation and compositions for inhibiting foaming
Assignee: ChampionX LLC
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Filing: 1948-01-26
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Granted: 1951-11-13
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Expires: 1968-01-26
Abstract
No abstract record available.
Inventors
- 👤 John W Ryznar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:22
CPC Classifications
B; B01; B01B; B01B1/00; B01B1/02; B01B1/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A PROCESS OF MINIMIZING THE PRODUCTION OF FOAM IN AND THE PRIMING OF STREAM GENERATORS OPERATING UNDER SUPERATMOSPHERIC PRESSURE CONDITIONS WHICH COMPRISES INCORPORATING WITH A WATER THEREIN CONTAINING AN AMOUNT OF TOTAL SOLIDS TENDING TO PRODUCE FOAMING AND PRIMING A QUANTITY OF A MONOALKYL ETHER OF A POLYOXYALKYLENE GLYCOL WHEREIN THE ALKYLENE RADICALS ARE SELECTED FROM THE GROUP CONSISTING OF ETHYLENE, PROPYLENE, AND MIXTURES THEREOF, THE AVERAGE MOLECULAR WEIGHT OF SAID MONOALKYL ETHER BEING AT LEAST ABOUT 1500 AND SAID MONOALKYL ETHER BEING SUBSTANTIALLY INSOLUBLE IN SAID WATER UNDER STEAM GENERATING CONDITIONS, AND SAID QUANTITY BEING SUFFICIENT TO SUBSTANTIALLY INHIBIT FOAMING AND PRIMING.
Claim 2
Dependent Claim
103 words
A PROCESS OF MINIMIZING THE PRODUCTION OF FOAM IN AND THE PRIMING OF STREAM GENERATORS OPERATING UNDER SUPERATMOSPHERIC PRESSURE CONDITIONS WHICH COMPRISES INCORPORATING WITH A WATER THEREIN CONTAINING AN AMOUNT OF TOTAL SOLIDS TENDING TO PRODUCE FOAMING AND PRIMING A QUANTITY OF A MONOALKYL ETHER OF A POLYOXYALKYLENE GLYCOL WHEREIN THE ALKYLENE RADICALS ARE SELECTED FROM THE GROUP CONSISTING OF ETHYLENE, PROPYLENE, AND MIXTURES THEREOF, THE AVERAGE MOLECULAR WEIGHT OF SAID MONOALKYL ETHER BEING AT LEAST ABOUT 1500 AND SAID MONOALKYL ETHER BEING SUBSTANTIALLY INSOLUBLE IN SAID WATER UNDER STEAM GENERATING CONDITIONS, AND SAID QUANTITY BEING SUFFICIENT TO SUBSTANTIALLY INHIBIT FOAMING AND PRIMING.
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) | 1954-11-12 | 1955-05-14 | 1955-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-12 | 1959-05-14 | 1959-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-12 | 1963-05-14 | 1963-11-13 | $7700.00 | Window Closed / Lapsed |