Patent US2425501A successfully refreshed from Google Patents.
US2425501A
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Prevention of crazing of flash heated shapes of polystyrene
Assignee: Plax Corp
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Filing: 1943-05-04
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Granted: 1947-08-12
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Expires: 1963-05-04
Abstract
No abstract record available.
Inventors
- 👤 Fred E Wiley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 08:43
CPC Classifications
C; C08; C08J; C08J7/00; C08J7/08; B; B29; B29C; B29C71/00; B29C71/02; B29C2071/025; B29C2071/027; B29C2791/00; B29C2791/001; B29K; B29K2025/00; C08J2325/00; C08J2325/02; C08J2325/04; C08J2325/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1683402A
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US2145119A
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US2166215A
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US2177633A
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US2239780A
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US2194313A
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US2205449A
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US2311818A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-08-11 | 1951-02-10 | 1951-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-08-11 | 1955-02-10 | 1955-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-08-11 | 1959-02-10 | 1959-08-12 | $7700.00 | Window Closed / Lapsed |