Patent US3486862A successfully refreshed from Google Patents.
US3486862A
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US
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Apparatus for the continuous production of a foamed resin
Assignee: BASF SE
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Filing: 1965-09-13
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Granted: 1969-12-30
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Expires: 1985-09-13
Abstract
No abstract record available.
Inventors
- 👤 Leo Unterstenhoefer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:12
CPC Classifications
B; B29; B29B; B29B7/00; B29B7/30; B29B7/32; B01; B01F; B01F23/00; B01F23/20; B01F23/23; B01F23/235; B01F25/00; B01F25/40; B01F25/42; B01F25/43; B01F25/433; B01F25/4331; B29B7/74; B29B7/7404; B29B7/7409; B29B7/7419; Y; Y10; Y10S; Y10S261/00; Y10S261/26; Y10S366/00; Y10S366/604; Y10S521/00; Y10S521/917
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-29 | 1973-06-30 | 1973-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-29 | 1977-06-30 | 1977-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-29 | 1981-06-30 | 1981-12-30 | $7700.00 | Window Closed / Lapsed |