US2470001A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing uniformly colored extruded articles from vinyl aromatic resins
Assignee: Dow Chemical Co
•
Filing: 1945-05-30
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Granted: 1949-05-10
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Expires: 1965-05-30
Abstract
No abstract record available.
Inventors
- 👤 Kenneth E Stober
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 09:43
CPC Classifications
C; C08; C08J; C08J3/00; C08J3/20; C08J3/22; C08J3/226; B; B29; B29C; B29C48/00; B29C48/25; B29C48/285; B29C48/29; B29C48/03; B29K; B29K2105/00; B29K2105/0005; C08J2325/00; C08J2425/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1528291A
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US1627195A
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US1966327A
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US2074285A
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US2109592A
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GB498679A
Cited
US2303340A
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US2279067A
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US2326531A
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US2374069A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-05-09 | 1952-11-08 | 1953-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-05-09 | 1956-11-08 | 1957-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-05-09 | 1960-11-08 | 1961-05-10 | $7700.00 | Window Closed / Lapsed |