US3106484A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal treating
Assignee: Cowles Chemical Co
•
Filing: 1961-01-04
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Granted: 1963-10-08
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Expires: 1981-01-04
Abstract
No abstract record available.
Inventors
- 👤 Russell C Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 20:18
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/82; C23C22/84; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/927; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12535; Y10T428/12556; Y10T428/12639; Y10T428/12771; Y10T428/12785; Y10T428/12792; Y10T428/27; Y10T428/273
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A PROCESS OF PREPARING A DYED ZINC SURFACED ARTICLE WHICH COMPRISES SUBJECTING A ZINC SURFACED ARTICLE TO A PLURALITY OF DIFFERENT TREATMENTS WITH CHROMIUM DEPOSITING SOLUTIONS, ALL CONTAING CRVI IONS, AT LEAST ONE SUCH CHROMIUM DEPOSITING SOLUTION CONTAINING AN AVERAGE AMOUNT OF CRIII IONS OF AT LEAST 0.2 GRAM PER LITER AND A WEIGHT RATIO OF CRVI TO CRIII GREATER THAN 4:1, AND AT LEAST ONE OTHER SUCH CHROMIUM DEPOSITING SOLUTION CONTAINING SUBSTANTIALLY NO CRIII IONS, SAID TREATMENTS BEING EFFECTIVE TO APPLY COATINGS CONTAINING A TOTAL OF AT LEAST 20 MILLIGRAMS OF CHROMIUM PER SQUARE FOOT OF SURFACE OF SAID ARTICLE, AND THEREAFTER APPLYING A DYE TO SAID CHROMIUM CONTAINING SURFACE OF SAID ARTICLE.
Claim 2
Dependent Claim
114 words
A PROCESS OF PREPARING A DYED ZINC SURFACED ARTICLE WHICH COMPRISES SUBJECTING A ZINC SURFACED ARTICLE TO A PLURALITY OF DIFFERENT TREATMENTS WITH CHROMIUM DEPOSITING SOLUTIONS, ALL CONTAING CRVI IONS, AT LEAST ONE SUCH CHROMIUM DEPOSITING SOLUTION CONTAINING AN AVERAGE AMOUNT OF CRIII IONS OF AT LEAST 0.2 GRAM PER LITER AND A WEIGHT RATIO OF CRVI TO CRIII GREATER THAN 4:1, AND AT LEAST ONE OTHER SUCH CHROMIUM DEPOSITING SOLUTION CONTAINING SUBSTANTIALLY NO CRIII IONS, SAID TREATMENTS BEING EFFECTIVE TO APPLY COATINGS CONTAINING A TOTAL OF AT LEAST 20 MILLIGRAMS OF CHROMIUM PER SQUARE FOOT OF SURFACE OF SAID ARTICLE, AND THEREAFTER APPLYING A DYE TO SAID CHROMIUM CONTAINING SURFACE OF SAID ARTICLE.
References Cited (Backward Citations)
US2393640A
Cited
US2477310A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-10-07 | 1967-04-08 | 1967-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-07 | 1971-04-08 | 1971-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-07 | 1975-04-08 | 1975-10-08 | $7700.00 | Window Closed / Lapsed |