US2949845A
Expired / Lapsed
US
⏱️ 0.0 years remaining
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Assignee: Individual
•
Filing: 1958-04-01
•
Granted: 1960-08-23
•
Expires: 1978-04-01
Abstract
No abstract record available.
Inventors
- 👤 Kurita Ken-Ichiro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:52
CPC Classifications
B; B66; B66B; B66B1/00; B66B1/24; B66B1/28; B01; B01D; B01D25/00; B01D25/12; B01D25/172; B01D25/19; B01D25/21; B01D25/215; B01D25/32; B01D25/34; B01D25/38
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1893854A
Cited
FR911942A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-23 | 1964-02-22 | 1964-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-23 | 1968-02-22 | 1968-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-23 | 1972-02-22 | 1972-08-23 | $7700.00 | Window Closed / Lapsed |