US2816741A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufacture of expanded materials
Assignee: Hudson Foam Plastics Corp
•
Filing: 1954-05-07
•
Granted: 1957-12-17
•
Expires: 1974-05-07
Abstract
No abstract record available.
Inventors
- 👤 Shuffman Oscar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:28
CPC Classifications
B; B29; B29B; B29B7/00; B29B7/74; B29B7/7476; B29B7/748; B29K; B29K2105/00; B29K2105/04; Y; Y10; Y10S; Y10S366/00; Y10S366/604; Y10S521/00; Y10S521/917
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1102696A
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US1117670A
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US1233023A
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US1466639A
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US1941808A
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US2033412A
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US2446373A
Cited
US2464523A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-12-16 | 1961-06-17 | 1961-12-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-12-16 | 1965-06-17 | 1965-12-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-12-16 | 1969-06-17 | 1969-12-17 | $7700.00 | Window Closed / Lapsed |