US2935196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regeneration system for liquidtreating apparatus
Assignee: PORTA SOFT Co
•
Filing: 1957-03-22
•
Granted: 1960-05-03
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Expires: 1977-03-22
Abstract
No abstract record available.
Inventors
- 👤 Omer E Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:40
CPC Classifications
B; B01; B01J; B01J49/00; B01J49/75; Y; Y10; Y10T; Y10T137/00; Y10T137/1624; Y10T137/7287; Y10T137/7358; Y10T137/7423; Y10T137/7426; Y10T137/7436; Y10T137/794; Y10T137/8049
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1371110A
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US1853859A
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US2352630A
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US2333618A
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US2347202A
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US2347204A
Cited
US2504816A
Cited
US2524635A
Cited
US2798503A
Cited
US2751347A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-05-03 | 1963-11-02 | 1964-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-05-03 | 1967-11-02 | 1968-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-05-03 | 1971-11-02 | 1972-05-03 | $7700.00 | Window Closed / Lapsed |