US2361000A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making dialyzing membranes and article so produced
Assignee: Sylvania Industrial Corp
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Filing: 1941-10-06
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Granted: 1944-10-24
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Expires: 1961-10-06
Abstract
No abstract record available.
Inventors
- 👤 Zender Justin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 01:34
CPC Classifications
B; B01; B01D; B01D67/00; B01D67/0039; B01D67/0044; B01J; B01J13/00; B01J13/0052; B01J13/0069; C; C01; C01C; C01C3/00; C01C3/08; C01C3/12
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1947-10-24 | 1948-04-24 | 1948-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-10-24 | 1952-04-24 | 1952-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-10-24 | 1956-04-24 | 1956-10-24 | $7700.00 | Window Closed / Lapsed |