Patent US2978746A successfully refreshed from Google Patents.
US2978746A
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US
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Method of and apparatus for melting organic thermoplastic plastics
Assignee: Bayer AG
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Filing: 1956-03-29
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Granted: 1961-04-11
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Expires: 1976-03-29
Abstract
No abstract record available.
Inventors
- 👤 Rodenacker Wolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:08
CPC Classifications
B; B01; B01D; B01D1/00; B01D1/22; B01D1/222; B01D1/228; B29; B29B; B29B13/00; B29B13/02; B29B13/022; D; D01; D01D; D01D1/00; D01D1/04; D01D1/06; D01D1/09; F; F04; F04D; F04D5/00; F04D5/001
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2075735A
Cited
US2437685A
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US2437686A
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US2596272A
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US2719776A
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US2747224A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-04-10 | 1964-10-10 | 1965-04-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-04-10 | 1968-10-10 | 1969-04-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-04-10 | 1972-10-10 | 1973-04-11 | $7700.00 | Window Closed / Lapsed |