US3408306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of controlling foaming
Assignee: Hercules LLC
•
Filing: 1961-07-07
•
Granted: 1968-10-29
•
Expires: 1981-07-07
Abstract
No abstract record available.
Inventors
- 👤 Francis J Boylan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:05
CPC Classifications
B; B01; B01D; B01D19/00; B01D19/02; B01D19/04; B01D19/0404
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
THE METHOD OF CONTROLLING FOAMING IN AN AQUEOUS SYSTEM WHICH COMPRISES ADDING THERETO A SMALL AMOUNT OF A DEFOAMING COMPOSITION COMPRISING FROM ABOUT 80% TO ABOUT 97% OF A WATER-SINSOLUBLE HYDROPHOBIC ORGANIC LIQUID SELECTED FROM THE GROUP CONSISTING OF VEGETABLE OILS, MINERAL HYDROCARBONS, FLUORINATED HYDROCARBONS, LONG CHAIN ALCOHOLS, LONG CHAIN ESTERS AND LONG CHAIN AMINES, FROM ABOUT 3% TO ABOUT 20% OF SMALL SOLID NORMALLY HYDROPHILIC PARTICLES SELECTED FROM THE GROUP CONSISTING OF SILICA PARTICLES, BENTONITE PARTICLES, DIATOMACEOUS EARTH PARTICLES, TALC PARTICLES, ATTAPULGITE PARTICLES AND TITANIUM DIOXIDE PARTICLES WHICH HAVE BEEN TREATED TO RENDER THE SURFACE THEREOF HYDROPHOBIC SUSPENDED IN THE ORGANIC LIQUID, AND FROM ABOUT 0% TO ABOUT 5% OF A SURFACTANT, SAID PERCENTAGES BEING BASED ON THE COMPOSITION.
Claim 2
Independent Claim
120 words
THE METHOD OF CONTROLLING FOAMING IN AN AQUEOUS SYSTEM WHICH COMPRISES ADDING THERETO A SMALL AMOUNT OF A DEFOAMING COMPOSITION COMPRISING FROM ABOUT 80% TO ABOUT 97% OF A WATER-SINSOLUBLE HYDROPHOBIC ORGANIC LIQUID SELECTED FROM THE GROUP CONSISTING OF VEGETABLE OILS, MINERAL HYDROCARBONS, FLUORINATED HYDROCARBONS, LONG CHAIN ALCOHOLS, LONG CHAIN ESTERS AND LONG CHAIN AMINES, FROM ABOUT 3% TO ABOUT 20% OF SMALL SOLID NORMALLY HYDROPHILIC PARTICLES SELECTED FROM THE GROUP CONSISTING OF SILICA PARTICLES, BENTONITE PARTICLES, DIATOMACEOUS EARTH PARTICLES, TALC PARTICLES, ATTAPULGITE PARTICLES AND TITANIUM DIOXIDE PARTICLES WHICH HAVE BEEN TREATED TO RENDER THE SURFACE THEREOF HYDROPHOBIC SUSPENDED IN THE ORGANIC LIQUID, AND FROM ABOUT 0% TO ABOUT 5% OF A SURFACTANT, SAID PERCENTAGES BEING BASED ON THE COMPOSITION.
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) | 1971-10-29 | 1972-04-29 | 1972-10-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-10-29 | 1976-04-29 | 1976-10-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-10-29 | 1980-04-29 | 1980-10-29 | $7700.00 | Window Closed / Lapsed |