US2479423A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of and materials for treating surfaces of iron, zinc, and alloys of each
Assignee: Henkel Corp
•
Filing: 1946-02-07
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Granted: 1949-08-16
•
Expires: 1966-02-07
Abstract
No abstract record available.
Inventors
- 👤 Snyder Eugene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:58
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/05; C23C22/06; C23C22/07; C23C22/08; C23C22/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1290476A
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US1592102A
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US1888189A
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US2302510A
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US2132883A
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US2227945A
Cited
US2316810A
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US2304299A
Cited
US2403426A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-08-15 | 1953-02-14 | 1953-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-08-15 | 1957-02-14 | 1957-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-08-15 | 1961-02-14 | 1961-08-16 | $7700.00 | Window Closed / Lapsed |