US3360822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hot melt extruder
Assignee: BARMER MASCHINENFABRIK AG WUPP
•
Filing: 1965-11-02
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Granted: 1968-01-02
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Expires: 1985-11-02
Abstract
Abstract 1,129,335. Pug-mills. BARMAG BARMER MASCHINEFABRIK A.G. 9 Nov., 1965 [9 Nov., 1964], No. 47487/65. Heading B1C. [Also in Division B5] Each of a number of plasticized thermoplastics is supplied to a screw extruder via a channel with which is associated a variable drive metering pump. As shown, there are two such channels 2, 3 having independently driven gear pumps 6, 7 respectively. Heaters 21, 22 are provided.
Inventors
- 👤 Schippers Heinz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:29
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/25; B29C48/285; B29C48/29; B29C48/03; B29K; B29K2105/00; B29K2105/0005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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US2858594A
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US2957203A
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US3008193A
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US3110420A
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US3245116A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-01-01 | 1971-07-03 | 1972-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-01-01 | 1975-07-03 | 1976-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-01-01 | 1979-07-03 | 1980-01-02 | $7700.00 | Window Closed / Lapsed |