Patent CA1072414A successfully refreshed from Google Patents.
US2177612A
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Process of producing homogeneous solid articles from polyvinyl alcohol
Assignee: Resistoflex Corp
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Filing: 1937-12-16
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Granted: 1939-10-24
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Expires: 1957-12-16
Abstract
No abstract record available.
Inventors
- 👤 Schnabel Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 04:52
CPC Classifications
B; B29; B29B; B29B13/00; B29B13/02; B29B13/023; B29B13/06; B29C; B29C48/00; B29C48/03; B29C48/09; B29C48/25; B29C48/285; B29C48/288; B29C48/30; B29C48/32; B29K; B29K2029/00; B29K2029/04; B29K2105/00; B29K2105/0005; B29K2105/06; B29K2105/16
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) | 1942-10-23 | 1943-04-24 | 1943-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1946-10-23 | 1947-04-24 | 1947-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1950-10-23 | 1951-04-24 | 1951-10-24 | $7700.00 | Window Closed / Lapsed |