Patent US2776918A successfully refreshed from Google Patents.
US2776918A
Expired / Lapsed
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Method and composition for application of protective chelate-containing coating to surfaces and article formed thereby
Assignee: Dow Chemical Co
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Filing: 1952-07-21
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Granted: 1957-01-08
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Expires: 1972-07-21
Abstract
No abstract record available.
Inventors
- 👤 Frederick C Bersworth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:23
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/14; B05D3/00; B05D3/10; B05D3/102; B05D1/00; B05D1/18; B05D1/185; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
66 words
THE METHOD OF RENDERING AN AQUEOUS COATING COMPOSITION, COMPRISING AN AQUEOUS COLLOIDAL DISPERSION OF A FILM-FORMING RESIN, NON-CORROSIVE TO SOLID SURFACES FORMED FROM IRON METAL TO WHICH THE COMPOSITION IS APPLIED, WHICH METHOD COMPRISES INCORPORATING IN SAID COATING COMPOSITION A CHELATING AGENT IN AMOUNT CORRESPONDING TO ABOUT 0.1 PERCENT TO ABOUT 5 PERCENT BY WEIGHT OF THE COMPOSITION, SAID CHELATING AGENT CORRESPONDING TO THE GENERAL FORMULA
References Cited (Backward Citations)
GB277372A
Cited
US2165099A
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US2413857A
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US2417885A
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US2396938A
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US2560741A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-08 | 1960-07-09 | 1961-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-08 | 1964-07-09 | 1965-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-08 | 1968-07-09 | 1969-01-08 | $7700.00 | Window Closed / Lapsed |