US3423340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Organopolysiloxane antifoam compositions
Assignee: Midland Silicones Ltd
•
Filing: 1963-12-20
•
Granted: 1969-01-21
•
Expires: 1983-12-20
Abstract
No abstract record available.
Inventors
- 👤 Hedley Samuel Bowdon Marshall
- 👤 Thomas Richard Williams
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:21
CPC Classifications
B; B01; B01D; B01D19/00; B01D19/02; B01D19/04; B01D19/0404; B01D19/0409; C; C08; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/101; C08K5/103
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
AN AQUEOUS ANTIFOAM EMULSION CONSISTING ESSENTIALLY OF (1) FROM 1 TO 30% BY WEIGHT OF THE EMULSION OF A BENZENE-SOLUBLE DIMETHYLPOLYSILOXANE, (2) FROM 1 TO 15% BY WEIGHT BASED ON THE WEIGHT OF THE DIMETHYLPOLYSILOXANE OF A FINELY-DIVIDED SILICA, (3) FROM 10 TO 90% BY WEIGHT BASED ON THE WEIGHT OF THE DIMETHYLPOLYSILOXANE OF SORBITAN POLYOXYETHYLENE MONOSTEARATE, (4) FROM 10 TO 90% BY WEIGHT BASED ON THE WEIGHT OF THE DIMETHYLPOLYSILOXANE OF MONOSTEARATE SELECTED FROM THE GROUP CONSISTING OF SORBITAN MONOSTEARATE, GLYCEROL MONOSTEARATE AND MIXTURES THEREOF, (5) WATER AND CONTAINING (6) SODIUM CARBOSY METHYL CELLULOSE.
Claim 2
Dependent Claim
95 words
AN AQUEOUS ANTIFOAM EMULSION CONSISTING ESSENTIALLY OF (1) FROM 1 TO 30% BY WEIGHT OF THE EMULSION OF A BENZENE-SOLUBLE DIMETHYLPOLYSILOXANE, (2) FROM 1 TO 15% BY WEIGHT BASED ON THE WEIGHT OF THE DIMETHYLPOLYSILOXANE OF A FINELY-DIVIDED SILICA, (3) FROM 10 TO 90% BY WEIGHT BASED ON THE WEIGHT OF THE DIMETHYLPOLYSILOXANE OF SORBITAN POLYOXYETHYLENE MONOSTEARATE, (4) FROM 10 TO 90% BY WEIGHT BASED ON THE WEIGHT OF THE DIMETHYLPOLYSILOXANE OF MONOSTEARATE SELECTED FROM THE GROUP CONSISTING OF SORBITAN MONOSTEARATE, GLYCEROL MONOSTEARATE AND MIXTURES THEREOF, (5) WATER AND CONTAINING (6) SODIUM CARBOSY METHYL CELLULOSE.
References Cited (Backward Citations)
US3076768A
Cited
US3113930A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-01-21 | 1972-07-22 | 1973-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-01-21 | 1976-07-22 | 1977-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-01-21 | 1980-07-22 | 1981-01-21 | $7700.00 | Window Closed / Lapsed |