US2528273A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of inhibiting foaming in steam boilers
Assignee: Dearborn Chemical Co
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Filing: 1947-09-09
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Granted: 1950-10-31
•
Expires: 1967-09-09
Abstract
No abstract record available.
Inventors
- 👤 Lewis O Gunderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 02:04
CPC Classifications
B; B01; B01B; B01B1/00; B01B1/02; B01B1/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
THE METHOD OF GENERATING STEAM FROM A BOILER WATER HAVING A TENDENCY TO FOAM ON BOILING WHICH COMPRISES DISPERSING INTO SAID WATER A MATERIAL SELECTED FROM THE GROUP CONSISTING OF TRIAUROYL DIETHYLENE TRIAMINE, TETRAUROYL TRIETHYLENE TETRAMINE, TETRAUROYL TETRAETHYLENE PENTAMINE AND PENTACAPROYL TETRAETHYLENE PENTAMINE, AND HEATING THE RESULTING AQUEOUS DISPERSION TO THE BOILING POINT, SAID MATERIAL BEING ADDED IN AN AMOUNT SUFFICIENT SUBSTANTIALLY TO INHIBIT THE TENDENCY OF SAID WATER TO FOAM ON BOILING.
Claim 2
Independent Claim
73 words
THE METHOD OF GENERATING STEAM FROM A BOILER WATER HAVING A TENDENCY TO FOAM ON BOILING WHICH COMPRISES DISPERSING INTO SAID WATER A MATERIAL SELECTED FROM THE GROUP CONSISTING OF TRIAUROYL DIETHYLENE TRIAMINE, TETRAUROYL TRIETHYLENE TETRAMINE, TETRAUROYL TETRAETHYLENE PENTAMINE AND PENTACAPROYL TETRAETHYLENE PENTAMINE, AND HEATING THE RESULTING AQUEOUS DISPERSION TO THE BOILING POINT, SAID MATERIAL BEING ADDED IN AN AMOUNT SUFFICIENT SUBSTANTIALLY TO INHIBIT THE TENDENCY OF SAID WATER TO FOAM ON BOILING.
References Cited (Backward Citations)
US2304805A
Cited
US2328551A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-30 | 1954-05-01 | 1954-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-30 | 1958-05-01 | 1958-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-30 | 1962-05-01 | 1962-10-31 | $7700.00 | Window Closed / Lapsed |