Patent US2352519A successfully refreshed from Google Patents.
US2352519A
Expired / Lapsed
US
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Treatment of acid setting baths used in the manufacture of cellulose products from viscose
Assignee: MANVILLE JENCKES Corp
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Filing: 1943-09-14
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Granted: 1944-06-27
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Expires: 1963-09-14
Abstract
No abstract record available.
Inventors
- 👤 Joseph L Costa
- 👤 Kahler William Harlow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:53
CPC Classifications
D; D01; D01F; D01F13/00; D01F13/02; Y; Y02; Y02P; Y02P70/00; Y02P70/50; Y02P70/62
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) | 1947-06-27 | 1947-12-27 | 1948-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1951-06-27 | 1951-12-27 | 1952-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1955-06-27 | 1955-12-27 | 1956-06-27 | $7700.00 | Window Closed / Lapsed |