• All sections
• D - Textiles; paper
• D01F - Chemical features in the manufacture of man-made filaments, threads, fibres, bristles or ribbons; apparatus specially adapted for the manufacture of carbon filaments
• D01F 9/22 - Carbon filaments; Apparatus specially adapted for the manufacture thereof by decomposition of organic filaments from polyaddition, polycondensation or polymerisation products from macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds from polyacrylonitriles

Patent holdings for IPC class D01F 9/22

Total number of patents in this class: 444

10-year publication summary

Principal owners for this class