US3563784A
Expired / Lapsed
US
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Pre-activation treatment in the electroless plating of synthetic resin substrates
Assignee: MacDermid Inc
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Filing: 1968-09-09
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Granted: 1971-02-16
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Expires: 1988-09-09
Abstract
Abstract AQUEOUS DILUTE SURFACTANT SOLUTIONS ARE EMPLOYED IN THE TREATMENT OF PLASTIC SUBSTRATES TO PREPARE THEM FOR ELECTROLESS PLAING TO ENSURE COMPLETE COVERAGE OF THE SUBSTRATE SURFACE BY THE METAL. THE SUBSTRATES ARE IMMERSED IN THE SUFACTANT SOLUTION AS A PRELIMINARY STEP IMMEDIATELY PRECEDING THE ACTIVATION OF THE SUBSTRATE IN THE NORMAL CYCLE OF ELECTROLESS PLATING OPERATIONS, SUPPLANTING VARIOUS OTHER PRE-ACTIVATION STEPS AND, UNLIKE SUCH PRIOR STEPS, BEING OPERATIVE FOR ALL TYPES OF SYNTHETIC RESINS ENCOUNTERED IN ELECTROLESS PLATING OPERATIONS.
Inventors
- 👤 William P Innes
- 👤 Eugene D D Ottavio
- 👤 Sharon D Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:57
CPC Classifications
C; C23; C23C; C23C18/00; C23C18/16; C23C18/18; C23C18/20; C23C18/28; C23C18/30; C23C18/2006; C23C18/2046; C23C18/2073; C23C18/208; C23C18/22; C23C18/24; C23C18/26; C23C18/285
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |