Correcting for gravitational force variation in measuring the melt flow index of a polymer
US12055470B2 · kind B2 · utility
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3References
19Claims
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Key dates
| Filing date | Oct 17, 2022 |
| Grant date | Aug 6, 2024 |
| Priority date | — |
| Expiry date | Oct 17, 2042 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2011/0006
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Methods and apparatus are disclosed for correcting for gravitational force variation in measuring the melt flow index of a polymer at a location. For example, some embodiments may involve determining a value representing an extent to which gravitational force at the location varies from standard gravity, such as based at least in part upon the latitude of the location. The value may be used in correcting the melt flow index measured for the polymer using a plastometer at the location.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.