US3341467A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of inhibiting foaming in aqueous systems
Assignee: WR Grace and Co
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Filing: 1967-03-03
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Granted: 1967-09-12
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Expires: 1987-03-03
Abstract
No abstract record available.
Inventors
- 👤 Chih M Hwa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 09:41
CPC Classifications
B; B01; B01D; B01D19/00; B01D19/02; B01D19/04; B01D19/0404; B01D19/0418
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
29 words
THE METHOD OF INHIBITING FOAMING IN A CIRCULATING WATER SYSTE WHICH COMPRISES INTRODUCING INTO SAID WATER AN EFFECTIVE AMOUNT OF A PHOSPHATED ALKOXY POLYETHYLENEOXY ETHANOL HAVING THE STRUCTURAL FORMULA:
Claim 2
Independent Claim
29 words
THE METHOD OF INHIBITING FOAMING IN A CIRCULATING WATER SYSTE WHICH COMPRISES INTRODUCING INTO SAID WATER AN EFFECTIVE AMOUNT OF A PHOSPHATED ALKOXY POLYETHYLENEOXY ETHANOL HAVING THE STRUCTURAL FORMULA:
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) | 1970-09-11 | 1971-03-13 | 1971-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-11 | 1975-03-13 | 1975-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-11 | 1979-03-13 | 1979-09-12 | $7700.00 | Window Closed / Lapsed |