US2563857A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Defoaming agent for pulp and paper stock
Assignee: Nopco Chemical Co
•
Filing: 1945-10-12
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Granted: 1951-08-14
•
Expires: 1965-10-12
Abstract
No abstract record available.
Inventors
- 👤 Earl P Mcginn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:50
CPC Classifications
D; D21; D21H; D21H21/00; D21H21/06; D21H21/12; D21H17/00; D21H17/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
160 words
A DEFOAMING AGENT FOR PULP AND PAPER STOCK COMPRISING A WATER EMULSION MADE UP OF FROM ABOUT 10 PARTS TO ABOUT 20 PARTS BY WEIGHT OF A MINERAL WAX, FROM ABOUT 4 PARTS TO ABOUT 7 PARTS BY WEIGHT OF AN ALKALI METAL SOAP OF A FATTY ACID HAVING FROM 16 TO 22 CARBON ATOMS SELECTED FROM THE GROUP CONSISTING OF SODIUM SOAPS AND POTASSIUM SOAPS OF SUCH FATTY ACIDS, FROM ABOUT 5 PARTS TO ABOUT 20 PARTS BY WEIGHT OF A MONO ESTER OF A POLYHYDRIC ALCOHOL AND A FATTY ACID HAVING FROM 16 TO 22 CARBON ATOMS, AND FROM ABOUT 5 PARTS TO ABOUT 15 PARTS BY WEIGHT OF AN ESTER OF A MONOHYDRIC ALCOHOL CONTAINING FROM 1 TO 10 CARBON ATOMS WITH A FATTY ACID HAVING FROM 16 TO 22 CAR BON ATOMS, THE BALANCE OF THE EMULSION BEING SUBSTANTIALLY ALL WATER AND THE AMOUNT OF WATER IN THE EMULSION NOT EXCEEDING ABOUT 99% OF THE EMULSION.
Claim 2
Dependent Claim
160 words
A DEFOAMING AGENT FOR PULP AND PAPER STOCK COMPRISING A WATER EMULSION MADE UP OF FROM ABOUT 10 PARTS TO ABOUT 20 PARTS BY WEIGHT OF A MINERAL WAX, FROM ABOUT 4 PARTS TO ABOUT 7 PARTS BY WEIGHT OF AN ALKALI METAL SOAP OF A FATTY ACID HAVING FROM 16 TO 22 CARBON ATOMS SELECTED FROM THE GROUP CONSISTING OF SODIUM SOAPS AND POTASSIUM SOAPS OF SUCH FATTY ACIDS, FROM ABOUT 5 PARTS TO ABOUT 20 PARTS BY WEIGHT OF A MONO ESTER OF A POLYHYDRIC ALCOHOL AND A FATTY ACID HAVING FROM 16 TO 22 CARBON ATOMS, AND FROM ABOUT 5 PARTS TO ABOUT 15 PARTS BY WEIGHT OF AN ESTER OF A MONOHYDRIC ALCOHOL CONTAINING FROM 1 TO 10 CARBON ATOMS WITH A FATTY ACID HAVING FROM 16 TO 22 CAR BON ATOMS, THE BALANCE OF THE EMULSION BEING SUBSTANTIALLY ALL WATER AND THE AMOUNT OF WATER IN THE EMULSION NOT EXCEEDING ABOUT 99% OF THE EMULSION.
References Cited (Backward Citations)
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FR793173A
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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) | 1954-08-13 | 1955-02-12 | 1955-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-13 | 1959-02-12 | 1959-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-13 | 1963-02-12 | 1963-08-14 | $7700.00 | Window Closed / Lapsed |