Patent US2931780A successfully refreshed from Google Patents.
US2931780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Defoaming compositions and process
Assignee: JBS USA LLC
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Filing: 1956-03-19
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Granted: 1960-04-05
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Expires: 1976-03-19
Abstract
No abstract record available.
Inventors
- 👤 Charles S Steiner
- 👤 Fritz Earle
- 👤 Jack M Becktel
- 👤 William H Kloster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:17
CPC Classifications
B; B01; B01D; B01D19/00; B01D19/02; B01D19/04; B01D19/0404
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
A METHOD OF SUPPRESSING FOAM IN A MEDIA NORMALLY HAVING THE TENDENCY TO FOAM EXCESSIVELY, WHICH COMPRISES: INCORPORATING IN SAID MEDIA A SMALL BUT SUFFICIENT AMOUNT OF A SUBSTANTIALLY STEROL-FREE MIXTURE OF FATTY ACIDS, ROSIN ACIDS, AND UNSAPOIFIABLE MATERIALS, SAID MIXTURE BEING DERIVED FROM TALL OIL PITCH BY EXTRACTION OF SAID TALL OIL PITCH WITH A LIQUID NORMALLY GASEOUS HYDROCARBON, AND REMOVAL OF THE STEROLS.
Claim 2
Independent Claim
65 words
A METHOD OF SUPPRESSING FOAM IN A MEDIA NORMALLY HAVING THE TENDENCY TO FOAM EXCESSIVELY, WHICH COMPRISES: INCORPORATING IN SAID MEDIA A SMALL BUT SUFFICIENT AMOUNT OF A SUBSTANTIALLY STEROL-FREE MIXTURE OF FATTY ACIDS, ROSIN ACIDS, AND UNSAPOIFIABLE MATERIALS, SAID MIXTURE BEING DERIVED FROM TALL OIL PITCH BY EXTRACTION OF SAID TALL OIL PITCH WITH A LIQUID NORMALLY GASEOUS HYDROCARBON, AND REMOVAL OF THE STEROLS.
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) | 1963-04-05 | 1963-10-05 | 1964-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-05 | 1967-10-05 | 1968-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-05 | 1971-10-05 | 1972-04-05 | $7700.00 | Window Closed / Lapsed |