Patent US2194994A successfully refreshed from Google Patents.
US2194994A
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Solvents for the condensation products of polyvinyl alcohols and aldehydes
Assignee: NOBEL FRANCAISE SOC
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Filing: 1937-11-17
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Granted: 1940-03-26
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Expires: 1957-11-17
Abstract
No abstract record available.
Inventors
- 👤 Belloc Maurice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:29
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/02; C08J3/09; C08J3/091; C08J3/095; C08L; C08L29/00; C08L29/14; G; G03; G03C; G03C1/00; G03C1/76; G03C1/795; C08J2327/00; C08J2327/02; C08J2327/12; C08J2327/14; C08J2329/00; C08J2329/14
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) | 1943-03-26 | 1943-09-25 | 1944-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1947-03-26 | 1947-09-25 | 1948-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1951-03-26 | 1951-09-25 | 1952-03-26 | $7700.00 | Window Closed / Lapsed |