Patent US4632444A successfully refreshed from Google Patents.
Patent US3709742A successfully refreshed from Google Patents.
US3709742A
Expired / Lapsed
US
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Multi-color anodizing process for aluminum
Assignee: Re Jo Multi-Colour Inc
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Filing: 1971-02-16
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Granted: 1973-01-09
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Expires: 1991-02-16
Abstract
Abstract IN PRODUCING MULTI-COLOR DESIGNS ON AN ANODIZED ALUMIUM, A FIRST SOLUTION OF EITHER AN ACID OR A BASE IS APPLIED TO A DYED SURFACE TO PRODUCE A COLOR CHANGE, AND A SECOND SOLUTION OF EITHER THE ACID OR BASE NOT PREVIOUSLY USED, IS APPLIED TO A PORTION OF THE ALREADY TREATED SURFACE TO PRODUCE ANOTHER COLOR CHANGE.
Inventors
- 👤 J Jacobs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:19
CPC Classifications
C; C25; C25D; C25D11/00; C25D11/02; C25D11/04; C25D11/18; B; B05; B05D; B05D2202/00; B05D2202/20; B05D2202/25; B05D5/00; B05D5/06; B05D7/00; B05D7/14; Y; Y10; Y10S; Y10S205/00; Y10S205/917
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) | 1976-01-09 | 1976-07-10 | 1977-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-09 | 1980-07-10 | 1981-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-09 | 1984-07-10 | 1985-01-09 | $7700.00 | Window Closed / Lapsed |