Patent US3579429A successfully refreshed from Google Patents.
US3579429A
Expired / Lapsed
US
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Process for applying a white paint electrophoretically
Assignee: Henkel Corp
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Filing: 1970-01-06
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Granted: 1971-05-18
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Expires: 1990-01-06
Abstract
Abstract A WHITE PAINT FILM APPLIED TO AN IRON OR STEEL SURFACE BY THE ELECTROPHORETIC METHOD OF PAINTING TENDS TO BE OF A MUDDY, OFF-WHITE OR YELLOWISH COLOR; ALSO, FOREIGN DEPOSITS ON THE SURFACE TO BE PAINTED SHOW-UP IN THE WHITE PAINT FILM AS COLOR IMPERFECTIONS. THESE PROBLEMS ARE AVOIDED BY PRETREATING THE IRON OR STEEL SURFACE WITH AN AQUEOUS OLUTION OF COPPE TO APPLY THERETO COPPER DEPOSITS AND THEREAFTER PAINTING THE PRETREATED SURFACE WITH A WHITE PAINT BY THE ELECTROPHORETIC METHOD OF PAINTING.
Inventors
- 👤 Frank E Manson
- 👤 Lester Steinbrecher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:36
CPC Classifications
B; B05; B05D; B05D1/00; B05D1/02; B05D1/04; C; C23; C23C; C23C22/00; C23C22/05; C23C22/06; C23C22/07; C23C22/08; C23C22/12; C23C22/14; C23C22/22; C23C22/82; C23C22/83; C25; C25D; C25D13/00; C25D13/20
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) | 1974-05-17 | 1974-11-16 | 1975-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-17 | 1978-11-16 | 1979-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-17 | 1982-11-16 | 1983-05-18 | $7700.00 | Window Closed / Lapsed |