US3554780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Removable protective coating for selective plating of surfaces
Assignee: Rohm and Haas Co
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Filing: 1967-08-28
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Granted: 1971-01-12
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Expires: 1987-08-28
Abstract
Abstract THIS INVENTION RELATES TO AN IMPROVEMENT IN T HE METALLIZING OF VARIOUS SURFACES WHEREIN AN ACID RESISTANT BUT ALKALINE REMOVABLE STOP-OFF COATING IS APPLIED TO SELECTED PORTIONS OF THE SURFACE OF AN ARTICLE TO BE PLATED FOR THE PURPOSE OF MASKING PARTICULAR AREAS WHICH ARE TO REMAIN UNPLATED DURING THE PLATING PROCESS. THE STOP-OFF COATING COMPOSITIONS ARE AQUEOUS DISPERSIONS OF VINYL EMULSION COPOLYMERS C ONTAINING AT LEAST ONE CARBXYLIC ACID. THE PROCESS OF THIS INVENTION IS PARTICULARLY APPLICABLE TO A SURFACE FORMED FROM A PLASTIC OR SYNTHETIC POLYMETRIC MATERIAL.
Inventors
- 👤 Vernon F Miller
- 👤 David R Gehman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:59
CPC Classifications
C; C25; C25D; C25D5/00; C25D5/02; C25D5/022; C23; C23C; C23C18/00; C23C18/16; C23C18/1601; C23C18/1603; C23C18/1605; H; H05; H05K; H05K3/00; H05K3/10; H05K3/18; H05K3/181; H05K3/182; H05K3/184; H05K2203/00; H05K2203/05; H05K2203/0562; H05K2203/0565; H05K2203/07; H05K2203/0756; H05K2203/0769; H05K2203/0779; H05K2203/0786; H05K2203/0789
Claims Analysis
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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) | 1974-01-11 | 1974-07-13 | 1975-01-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-11 | 1978-07-13 | 1979-01-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-11 | 1982-07-13 | 1983-01-12 | $7700.00 | Window Closed / Lapsed |