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Patent US2997447A successfully refreshed from Google Patents.
US2997447A
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Aqueous acetylenic glycol compositions
Assignee: Airco Inc
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Filing: 1955-08-01
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Granted: 1961-08-22
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Expires: 1975-08-01
Abstract
No abstract record available.
Inventors
- 👤 James P Russell
- 👤 Morton W Leeds
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:52
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/44; C; C07; C07C; C07C17/00; C07C17/38; C07C17/42; C08; C08K; C08K5/00; C08K5/04; C08K5/05; C11; C11D; C11D3/00; C11D3/16; C11D3/164
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
THE METHOD OF REDUCING THE SURFACE TENSION AND INCREASING THE WETTING PROPERTIES OF AN AQUEOUS SYSTEM WHICH COMPRISES ADDING TO SAID SYSTEM FROM ABOUT 0.05 PERCENT TO ABOUT 10.0 PERCENT BY WEIGHT OF THE AQUEOUS SYSTEM OF A SYMMETRICAL TERTIARY ACETYLENIC GLYCOL HAVING A STRUCTURE DESIGNATED BY THE FORMULA:
Claim 2
Independent Claim
49 words
THE METHOD OF REDUCING THE SURFACE TENSION AND INCREASING THE WETTING PROPERTIES OF AN AQUEOUS SYSTEM WHICH COMPRISES ADDING TO SAID SYSTEM FROM ABOUT 0.05 PERCENT TO ABOUT 10.0 PERCENT BY WEIGHT OF THE AQUEOUS SYSTEM OF A SYMMETRICAL TERTIARY ACETYLENIC GLYCOL HAVING A STRUCTURE DESIGNATED BY THE FORMULA:
References Cited (Backward Citations)
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Cited
US2250445A
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US2601315A
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US2656327A
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US2679482A
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US2801160A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-08-21 | 1965-02-20 | 1965-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-21 | 1969-02-20 | 1969-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-21 | 1973-02-20 | 1973-08-22 | $7700.00 | Window Closed / Lapsed |