Method and device of making a suspension of microparticles homogeneously distributed in an aqueous liquid carrier
US11235296B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 21, 2016 |
| Grant date | Feb 1, 2022 |
| Priority date | — |
| Expiry date | Jan 16, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01F2215/0454
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A method of mixing a liquid composition that includes microparticles dispersed in an aqueous liquid carrier may involve a first premixing step and a second premixing step. During the first premixing step a receptacle is oscillated about a longitudinal axis clockwise and counter-clockwise from a first reference point through a first angle of rotation for a first period of time and at a first angular velocity. During the second premixing step the receptacle is oscillated about the longitudinal axis clockwise and counter-clockwise from a second reference point through a second angle of rotation for a second period of time and at a second angular velocity. In examples, the first angle of rotation is smaller than said second angle of rotation, and the first period of time is shorter than the second period of time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.