US2804437A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Diatomite-phenol-formaldehyde antisweat coating
Assignee: Pearl Varnish Co Ltd
•
Filing: 1953-09-25
•
Granted: 1957-08-27
•
Expires: 1973-09-25
Abstract
No abstract record available.
Inventors
- 👤 Katz Siegbert
- 👤 Kut Siegmund
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:07
CPC Classifications
C; C09; C09K; C09K3/00; C09K3/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2006378A
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US1982778A
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US2151184A
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US2195580A
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US2342581A
Cited
DE720326C
Cited
US2336484A
Cited
US2393874A
Cited
US2567678A
Cited
US2591904A
Cited
US2674063A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-08-26 | 1961-02-25 | 1961-08-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-26 | 1965-02-25 | 1965-08-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-26 | 1969-02-25 | 1969-08-27 | $7700.00 | Window Closed / Lapsed |