Patent US3022251A successfully refreshed from Google Patents.
US3022251A
Expired / Lapsed
US
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Stabilized foam-providing composition
Assignee: Dow Chemical Co
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Filing: 1959-04-27
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Granted: 1962-02-20
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Expires: 1979-04-27
Abstract
No abstract record available.
Inventors
- 👤 Bernard J Thiegs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 23:15
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/04; C08J9/06; C08J2395/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A STABILIZED FOAM-PROVIDING COMPOSITION CONSISTING ESSENTIALLY OF WATER IN WHICH THERE IS DISSOLVED (1) BETWEEN ABOUT 0.25 AND 25 PERCENT BY WEIGHT OF ALUM WHICH IS ADAPTED TO REACT CHEMICALLY WITH A GAS-GENERATING ALKALI METAL CARBONATE SUBSTANCE IN ORDER TO BE SPUMED INTO A FOAM STRUCTURE AND (2) BETWEEN ABOUT 0.05 AND 5 PERCENT BY WEIGHT OF COAL ACIDS, BOTH BASED ON THE WEIGHT OF THE COMPOSITION, SAID COAL ACIDS BEING COMPOSED OF WATER-SOLUBLE POLYCARBOXYLIC AROMATIC PRODUCTS OF THE OXIDATION OF CAOL WHICH HAVE AN AVERAGE MOLECULAR WEIGHT IN THE RANGE BETWEEN ABOUT 250 AND 300, AN AVERAGE EQUIVALENT WEIGHT BETWEEN ABOUT 70 AND 90, AND WHICH CONTAIN AN AVERAGE OF FROM ABOUT 2.5 TO 5 CARBOXYLIC GROUPS PER AROMATIC NUCLEUS IN EACH MOLECULE.
Claim 2
Dependent Claim
124 words
A STABILIZED FOAM-PROVIDING COMPOSITION CONSISTING ESSENTIALLY OF WATER IN WHICH THERE IS DISSOLVED (1) BETWEEN ABOUT 0.25 AND 25 PERCENT BY WEIGHT OF ALUM WHICH IS ADAPTED TO REACT CHEMICALLY WITH A GAS-GENERATING ALKALI METAL CARBONATE SUBSTANCE IN ORDER TO BE SPUMED INTO A FOAM STRUCTURE AND (2) BETWEEN ABOUT 0.05 AND 5 PERCENT BY WEIGHT OF COAL ACIDS, BOTH BASED ON THE WEIGHT OF THE COMPOSITION, SAID COAL ACIDS BEING COMPOSED OF WATER-SOLUBLE POLYCARBOXYLIC AROMATIC PRODUCTS OF THE OXIDATION OF CAOL WHICH HAVE AN AVERAGE MOLECULAR WEIGHT IN THE RANGE BETWEEN ABOUT 250 AND 300, AN AVERAGE EQUIVALENT WEIGHT BETWEEN ABOUT 70 AND 90, AND WHICH CONTAIN AN AVERAGE OF FROM ABOUT 2.5 TO 5 CARBOXYLIC GROUPS PER AROMATIC NUCLEUS IN EACH MOLECULE.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-19 | 1965-08-21 | 1966-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-19 | 1969-08-21 | 1970-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-19 | 1973-08-21 | 1974-02-20 | $7700.00 | Window Closed / Lapsed |