Patent US4786286A successfully refreshed from Google Patents.
Patent US2779062A successfully refreshed from Google Patents.
US2779062A
Expired / Lapsed
US
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Production of porous shaped articles true to shape and size from synthetic thermoplastic materials
Assignee: BASF SE
•
Filing: 1952-04-16
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Granted: 1957-01-29
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Expires: 1972-04-16
Abstract
No abstract record available.
Inventors
- 👤 Stastny Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:50
CPC Classifications
C; C08; C08J; C08J9/00; C08J9/16; B; B29; B29C; B29C44/00; B29C44/34; B29C44/36; B29C44/38; B29C44/44; B29C44/445; C08J9/22; C08J9/228; C08J9/232; B29C44/3415; B29C44/3426
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2363051A
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US2409910A
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US2681321A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-29 | 1960-07-30 | 1961-01-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-29 | 1964-07-30 | 1965-01-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-29 | 1968-07-30 | 1969-01-29 | $7700.00 | Window Closed / Lapsed |