US3697398A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for electrolytically applying polymer coatings on electroconductive articles
Assignee: Dow Chemical Co
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Filing: 1971-07-06
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Granted: 1972-10-10
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Expires: 1991-07-06
Abstract
Abstract HYDROPHOBIC POLYMER COATINGS ARE APPLIED TO SOLID ELECTROCONDUCTIVE ARTICLES BY SUBJECTING A POLYSULFONIUM SALT IN SOLUTION IN AN ELECTROLYSIS SOLVENT TO AN ELECTRICAL POTENTIAL SUFFICIENT TO REDUCE THE SULFONIUM SALT. THE SOLID ELECTROCONDUCTIVE ARTICLES ARE USED AS THE CATHODE IN THE ELECTROLYSIS PROCESS. IN EXAMPLE, A LEAD ELECTRODE IS COATED WITH POLY(P-XYLYLENE) BY ELECTROLYZING AN AQUEOUS SOLUTION OF (P-PHENYLENEDIMETHYLENE)BIS(DIMETHYLSULFONIUM CHLORIDE).
Inventors
- 👤 Ritchie A Wessling
- 👤 William J Settineri
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 02:42
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/44; C09D5/4488
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) | 1975-10-10 | 1976-04-10 | 1976-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-10 | 1980-04-10 | 1980-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-10 | 1984-04-10 | 1984-10-10 | $7700.00 | Window Closed / Lapsed |