US2418265A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for providing aluminum and aluminum alloys with metal coatings
Assignee: SHERKA CHEMICAL CO Inc
•
Filing: 1940-08-20
•
Granted: 1947-04-01
•
Expires: 1960-08-20
Abstract
No abstract record available.
Inventors
- 👤 Korpiun Joachim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:38
CPC Classifications
C; C23; C23C; C23C2/00; C23C2/02; C23C2/024; C23C2/026; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/936; Y10S428/939; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12736; Y10T428/12771; Y10T428/12785
Claims Analysis
Total Claims: 0
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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) | 1950-03-31 | 1950-09-30 | 1951-04-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-03-31 | 1954-09-30 | 1955-04-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-03-31 | 1958-09-30 | 1959-04-01 | $7700.00 | Window Closed / Lapsed |