US3625050A
Expired / Lapsed
US
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Equipment for determining the melt viscosity of thermoplastics
Assignee: BASF SE
•
Filing: 1969-07-18
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Granted: 1971-12-07
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Expires: 1989-07-18
Abstract
Abstract EQUIPMENT FOR DETERMINING THE MELT VISOCITY OF THERMOPLATICS CONSISTING OF A CYLINDRICAL TUBE WITH AN ORIFICE PROVIDED AT THE LOWER END, AND A WEIGHTED PLUNGER WHICH IS INTRODUCTED INTO THE TUBE AFTER THE PLASTICS MATERIAL TO BE TESTED HAS BEEN CHARGED INTO THE SAME.
Inventors
- 👤 Wolfram Noetzel
- 👤 Theodor Daur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:43
CPC Classifications
G; G01; G01N; G01N11/00; G01N11/02; G01N11/04; G01N11/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-06 | 1975-06-07 | 1975-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-06 | 1979-06-07 | 1979-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-06 | 1983-06-07 | 1983-12-07 | $7700.00 | Window Closed / Lapsed |