Patent US2442940A successfully refreshed from Google Patents.
US2442940A
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US
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Process for making shaped porous masses of thermoplastic synthetic resinous materials
Assignee: Distillers Co Yeast Ltd
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Filing: 1945-06-01
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Granted: 1948-06-08
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Expires: 1965-06-01
Abstract
No abstract record available.
Inventors
- 👤 Staudinger Hanns Peter
- 👤 Kelly Brendan Kevin
- 👤 Cooper Alfred
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:49
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/22; C08J9/228; C08J9/232; B; B29; B29C; B29C67/00; B29C67/20; Y; Y10; Y10S; Y10S424/00; Y10S424/07
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2218385A
Cited
US2297248A
Cited
US2371868A
Cited
US2318385A
Cited
US2384387A
Cited
US2405345A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-06-08 | 1951-12-08 | 1952-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-06-08 | 1955-12-08 | 1956-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-06-08 | 1959-12-08 | 1960-06-08 | $7700.00 | Window Closed / Lapsed |