Patent US3308506A successfully refreshed from Google Patents.
US3308506A
Expired / Lapsed
US
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Process and apparatus for the continuous production of profiles from thermoplastics
Assignee: BASF SE
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Filing: 1964-11-27
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Granted: 1967-03-14
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Expires: 1984-11-27
Abstract
No abstract record available.
Inventors
- 👤 Pflueger Richard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:22
CPC Classifications
B; B29; B29C; B29C48/00; B29C48/03; B29C48/06; B29C48/022; B29C48/25; B29C48/78; B29C48/86; B29C48/865; B29C48/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
APPARATUS FOR MAKING RODS OR OTHER SECTIONS FROM MOLTEN THERMOPLASTICS WHICH COMPRISES: A MOLDING UNIT, MEANS FOR PASSING MOLTEN THERMOPLASTIC MATERIAL INTO SAID UNIT; COOLING MEANS SURROUNDING SAID UNIT FOR SOLIDIFYING SAID MATERIAL; MEANS FOR MAINTAINING A MOLTEN CONE OF SAID MATERIAL WITHIN SAID UNIT, SAID MEANS INCLUDING A TAPERING DISPLACEMENT MEMBER, SAID DISPLACEMENT MEMBER BEING RIGIDLY AND CONCENTRICALLY ARRANGED WITH ITS APEX IN THE DIRECTION OF FLOW OF SID MATERIAL AND PROJECTING INTO SAID MOLDING UNIT; AND MEANS FOR WITHDRAWING SAID MATERIAL IN A SOLIDIFIED FORM FROM SAID MOLDING UNIT.
Claim 2
Dependent Claim
91 words
APPARATUS FOR MAKING RODS OR OTHER SECTIONS FROM MOLTEN THERMOPLASTICS WHICH COMPRISES: A MOLDING UNIT, MEANS FOR PASSING MOLTEN THERMOPLASTIC MATERIAL INTO SAID UNIT; COOLING MEANS SURROUNDING SAID UNIT FOR SOLIDIFYING SAID MATERIAL; MEANS FOR MAINTAINING A MOLTEN CONE OF SAID MATERIAL WITHIN SAID UNIT, SAID MEANS INCLUDING A TAPERING DISPLACEMENT MEMBER, SAID DISPLACEMENT MEMBER BEING RIGIDLY AND CONCENTRICALLY ARRANGED WITH ITS APEX IN THE DIRECTION OF FLOW OF SID MATERIAL AND PROJECTING INTO SAID MOLDING UNIT; AND MEANS FOR WITHDRAWING SAID MATERIAL IN A SOLIDIFIED FORM FROM SAID MOLDING UNIT.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-03-13 | 1970-09-12 | 1971-03-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-03-13 | 1974-09-12 | 1975-03-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-03-13 | 1978-09-12 | 1979-03-14 | $7700.00 | Window Closed / Lapsed |