Inventor Wallace Woon-Fong Leung and Chi Ho Hung Patent Name 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) Abstract A method of making a multilayer filter and the multilayer filter made by the method. The method includes generally two steps.[…]
Inventor Wallace Woon-Fong Leung Patent Name Nanofiber Filter Facemasks and Cabin Filters (USA – US 8303693) 纳米纤维过滤面罩和舱室过滤器 (China – CN 104043286) 納米纖維過濾面罩和艙室過濾器 (HongKong – HK 1201777) Abstract A filtration medium includes a fine filter layer having a plurality of nanofibers and a coarse filter layer having a plurality of micro fibers attached to the[…]
Inventor Li, Li Patent Name Mask Structure – Nanofiber Mask with special multi-layer structure (Taiwan – TW M539958 U)
Inventor Li, Li Patent Name Mask Structure – 3D Mask with special ear-loop and face-fit design (Taiwan – TW M539957 U)
Inventor Li, Li Patent Name Mask Structure – T-shaped Mask with face-fit design (Taiwan – TW M539959 U)