Patent US2933400A successfully refreshed from Google Patents.
US2933400A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rust-preventing agent
Assignee: Individual
•
Filing: 1957-02-12
•
Granted: 1960-04-19
•
Expires: 1977-02-12
Abstract
No abstract record available.
Inventors
- 👤 Wurbs Anna
- 👤 Wurbs Ulrike
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:34
CPC Classifications
C; C09; C09D; C09D5/00; C09D5/08; C09D5/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A COATING COMPOSITION HAVING RUST-PREVENTING PROPERTIES DUE TO ITS CONTENT OF METAL POWDERS HAVING DIFFERING POSITIONS IN THE ELECTROMOTIVE SERIES OF THE ELEMENTS, CONSISTING OF 100 TO 120 KG. OF A VARNISH, 30 TO 32 KG. IRON POWDER, 62 TO 80 KG. OF A SECOND POLYVALENT METAL SELECTED FROM THE GROUP CONSISTING OF MAGNESIUM, ZINC, LEAD AND A MIXTURE OF THE SAME, AS WELL AS 4 TO 8 KG. OF AN OXIDE OF THE SECOND METAL, AND CONTAINING 30 TO 40 KG. ACTIVATED CARBON.
Claim 2
Dependent Claim
84 words
A COATING COMPOSITION HAVING RUST-PREVENTING PROPERTIES DUE TO ITS CONTENT OF METAL POWDERS HAVING DIFFERING POSITIONS IN THE ELECTROMOTIVE SERIES OF THE ELEMENTS, CONSISTING OF 100 TO 120 KG. OF A VARNISH, 30 TO 32 KG. IRON POWDER, 62 TO 80 KG. OF A SECOND POLYVALENT METAL SELECTED FROM THE GROUP CONSISTING OF MAGNESIUM, ZINC, LEAD AND A MIXTURE OF THE SAME, AS WELL AS 4 TO 8 KG. OF AN OXIDE OF THE SECOND METAL, AND CONTAINING 30 TO 40 KG. ACTIVATED CARBON.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-19 | 1963-10-19 | 1964-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-19 | 1967-10-19 | 1968-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-19 | 1971-10-19 | 1972-04-19 | $7700.00 | Window Closed / Lapsed |