Wallace Woon-Fong Leung and Chi Ho Hung
Multilayer nanofiber filter (USA – US 8523971, US 9138669)
多层奈米纤维过滤器 (China – CN 102481506)
Mehrlagiger Filter aus Nanofasern (Germany – DE112010001912, WO 2010127634)
A method of making a multilayer filter and the multilayer filter made by the method. The method includes generally two steps. The first step is to coat a layer of nanofibers on a single side or both sides of a substrate medium to obtain a composite filter medium, and the second step is to fold the composite filter medium in a serpentine fashion to form a multilayer filter.