US2428033A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of rustproof electrolytic coatings for metal stock
Assignee: Individual
•
Filing: 1941-11-24
•
Granted: 1947-09-30
•
Expires: 1961-11-24
Abstract
No abstract record available.
Inventors
- 👤 John S Nachtman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:57
CPC Classifications
C; C21; C21D; C21D8/00; C21D8/02; C21D8/04; C21D8/0478; C25; C25D; C25D5/00; C25D5/10; C25D5/12; C25D5/60; C25D5/623; C25D5/627; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9335; Y10S428/934; Y10S428/935; Y10T; Y10T428/00; Y10T428/12; Y10T428/12458
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1578254A
Cited
US1746987A
Cited
US1963391A
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US2156262A
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GB415037A
Cited
GB424724A
Cited
US2044742A
Cited
US2219738A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-09-29 | 1951-03-31 | 1951-09-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-09-29 | 1955-03-31 | 1955-09-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-09-29 | 1959-03-31 | 1959-09-30 | $7700.00 | Window Closed / Lapsed |