Patent US3216962A successfully refreshed from Google Patents.
US3216962A
Expired / Lapsed
US
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Thickened acidic compositions
Assignee: Dow Chemical Co
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Filing: 1961-06-07
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Granted: 1965-11-09
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Expires: 1981-06-07
Abstract
No abstract record available.
Inventors
- 👤 Eugene M Gatza
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 14:48
CPC Classifications
F; F16; F16K; F16K1/00; F16K1/24; B; B01; B01J; B01J19/00; B01J19/06; B01J2/00; B01J2/30; C; C08; C08K; C08K5/00; C08K5/0008; C09; C09K; C09K8/00; C09K8/58; C09K8/588; C09K8/60; C09K8/62; C09K8/72; C09K8/74; C23; C23G; C23G1/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A COMPOSITION OF MATTER COMPRISING (1) WATER, (2) AN ACID HAVING AN IONIZATION CONSTANT ABOVE ABOUT 1.7X10**-5, (3) A WATER-DISPERSIBLE POLYMERIC RESIN HAVING A MOLECULAR WEIGHT ABOVE ABOUT 1,000 OBTAINED BY POLYMERIZING ETHYLENICALLY UNSATURATED MONOMERS, WHICH RESIN IS HIGHLY SUBSTITUTED WITH SULFONIC GROUPS AND (4) A SMALL BUT EFFECTIVE AMOUNT FOR PROMOTING THICKENING OF A THICKENING PROMOTER SELECTED FROM THE GROUP CONSISTING OF COMPOSITION CORRESPONDING TO THE GENERAL FORMULA:
Claim 2
Dependent Claim
69 words
A COMPOSITION OF MATTER COMPRISING (1) WATER, (2) AN ACID HAVING AN IONIZATION CONSTANT ABOVE ABOUT 1.7X10**-5, (3) A WATER-DISPERSIBLE POLYMERIC RESIN HAVING A MOLECULAR WEIGHT ABOVE ABOUT 1,000 OBTAINED BY POLYMERIZING ETHYLENICALLY UNSATURATED MONOMERS, WHICH RESIN IS HIGHLY SUBSTITUTED WITH SULFONIC GROUPS AND (4) A SMALL BUT EFFECTIVE AMOUNT FOR PROMOTING THICKENING OF A THICKENING PROMOTER SELECTED FROM THE GROUP CONSISTING OF COMPOSITION CORRESPONDING TO THE GENERAL 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) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |