国家/地区 欧洲专利局（EPO）（2）
IPC部 D（2）
IPC大类 D01（2）
IPC小类 D01D（2）
IPC
发明人
公开年
申请年 2021（2）
专利权人

Filter material, useful in face mask and/or respirator, comprises electrospun nanofiber membrane and active nanomaterial agent incorporated into the membrane, where the membrane filters disease-causing agents.

HASAN S W, MAVUKKANDY M

Processing coal, comprises e.g. subjecting raw coal to liquefaction process effective to form pitch resin, and subjecting the pitch resin to variable crystallinity spinning process effective to form raw fiber.

TARGETT M, YURCHICK C L