Patent US3913836A successfully refreshed from Google Patents.
Patent US3455839A successfully refreshed from Google Patents.
US3455839A
Expired / Lapsed
US
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Method for reducing or preventing foam in liquid mediums
Assignee: Dow Silicones Corp
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Filing: 1966-02-16
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Granted: 1969-07-15
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Expires: 1986-02-16
Abstract
No abstract record available.
Inventors
- 👤 Lawrence A Rauner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:02
CPC Classifications
B; B01; B01D; B01D19/00; B01D19/02; B01D19/04; B01D19/0404; B01D19/0409; C; C08; C08L; C08L83/00; C08L83/04; C08G; C08G77/00; C08G77/04; C08G77/42; C08G77/44
Claims Analysis
Total Claims: 0
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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) | 1972-07-14 | 1973-01-13 | 1973-07-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-07-14 | 1977-01-13 | 1977-07-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-07-14 | 1981-01-13 | 1981-07-15 | $7700.00 | Window Closed / Lapsed |