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Patent US2642333A successfully refreshed from Google Patents.
US2642333A
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US
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Method of spinning polyvinyl alcohol fibers
Assignee: Omni Products Corp
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Filing: 1950-04-08
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Granted: 1953-06-16
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Expires: 1970-04-08
Abstract
No abstract record available.
Inventors
- 👤 Tomonari Tsukumo
- 👤 Akaboshi Michijiro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:43
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/12; D01D5/14; D01D5/06; D01F; D01F6/00; D01F6/02; D01F6/14; Y; Y10; Y10S; Y10S260/00; Y10S260/23; Y10S8/00; Y10S8/10
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US827434A
Cited
US838758A
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GB415323A
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US2138394A
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US2239718A
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US2288982A
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US2453839A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-15 | 1956-12-15 | 1957-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-15 | 1960-12-15 | 1961-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-15 | 1964-12-15 | 1965-06-16 | $7700.00 | Window Closed / Lapsed |