US2862622A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Filters
Assignee: Detrex Corp
•
Filing: 1955-08-10
•
Granted: 1958-12-02
•
Expires: 1975-08-10
Abstract
No abstract record available.
Inventors
- 👤 Jr Charles E Kircher
- 👤 Robert J Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 19:07
CPC Classifications
B; B01; B01D; B01D29/00; B01D29/50; B01D29/52; B01D29/11; B01D29/13; B01D29/15; B01D29/62; B01D29/66; B01D2201/00; B01D2201/04; B01D2201/043; B01D2201/0446; B01D2201/0461; B01D37/00; B01D37/02
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2354623A
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US2595913A
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US2562730A
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US2710099A
Cited
US2570132A
Cited
US2625273A
Cited
US2681153A
Cited
US2600458A
Cited
US2693882A
Cited
US2742158A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-01 | 1962-06-02 | 1962-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-01 | 1966-06-02 | 1966-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-01 | 1970-06-02 | 1970-12-02 | $7700.00 | Window Closed / Lapsed |