Material for rapid gas sorption in loudspeakers
US10349164B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 28, 2016 |
| Grant date | Jul 9, 2019 |
| Priority date | — |
| Expiry date | Dec 8, 2036 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01D2257/104
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
An assemblage of substantially round particles with a mean diameter between 0.1 and 4 mm, more preferable between 0.3 to 2 mm and most preferable between 0.8 to 1.2 mm, wherein the density of the assemblage determined by ISO 697 is between 250 kg/m3 and 400 kg/m3 is disclosed. The substantially round particles comprise at least one microporous material and optionally at least one binder, wherein the assemblage comprises a pore volume, wherein the pore volume comprises pores resulting from void space between different ones of the substantially round particles and pores within the substantially round particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.