US3660339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Latex thickener
Assignee: ChampionX LLC
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Filing: 1969-06-03
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Granted: 1972-05-02
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Expires: 1989-06-03
Abstract
Abstract A LATEX COMPOSITION COMPRISING A COLLOIDAL AQUEOUS EMULSION OF A POLYMER AND 0.1-5% BY WEIGHT, BASED ON DRY LATEX, OF A THICKENING AGENT. THE TICKENING AGENT IS PREPARED BY REACTING A MALEIC ANHYDRIDE COPOLYMER WITH A POLYALKYLENE GLYCOL IN A MOLE RATIO OF .001:1 TO 0.1:1.
Inventors
- 👤 Theodore R Schuh Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:22
CPC Classifications
C; C08; C08G; C08G81/00; C08G81/02; C08G81/024; C08G81/025; C08L; C08L21/00; C08L21/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-02 | 1975-11-01 | 1976-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-02 | 1979-11-01 | 1980-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-02 | 1983-11-01 | 1984-05-02 | $7700.00 | Window Closed / Lapsed |