US2464329A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of forming low ph hydrogel beads
Assignee: SOEONY VACUUM OIL Co Inc
•
Filing: 1943-09-02
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Granted: 1949-03-15
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Expires: 1963-09-02
Abstract
No abstract record available.
Inventors
- 👤 Milton M Marisic
- 👤 Arthur C Schmitt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:44
CPC Classifications
C; C01; C01B; C01B33/00; C01B33/113; C01B33/12; C01B33/14; C01B33/152; C01B33/154; C01B33/1543; B; B01; B01J; B01J21/00; B01J21/06; B01J21/08
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1297724A
Cited
US1674558A
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US1646297A
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US1949360A
Cited
US2302297A
Cited
US2272301A
Cited
US2326523A
Cited
US2339838A
Cited
US2385217A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-03-14 | 1952-09-13 | 1953-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-14 | 1956-09-13 | 1957-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-14 | 1960-09-13 | 1961-03-15 | $7700.00 | Window Closed / Lapsed |