| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 423447400 | Prior treatment before carbonization (except with gaseous oxygen) | 6 |
| 20080317661 | Carbon fibers from kraft softwood lignin - A method of making a carbon fiber from softwood alkaline black liquor lignin by acetylating the lignin to provide a meltable and drawable lignin. | 12-25-2008 |
| 20100143235 | Method of manufacturing carbon nanofiber and apparatus for manufacturing the same - The present invention provides a method of manufacturing a carbon nanofiber of the present invention including dissolving a catalyst-precursor and a supporter-precursor into a solvent of a hydrocarbon-based compound to prepare a reacting solution, atomizing the reacting solution, thermally decomposing the atomized reacting solution to forming particles of the carbon nanofiber, and collecting the particles of the carbon nanofiber. In accordance with the above method, the carbon nanofiber is efficiently mass-produced in situ process and in batch process. | 06-10-2010 |
| 20130183227 | THERMOPLASTIC LIGNIN FOR PRODUCING CARBON FIBERS - A fusible lignin has a gas transition temperature in the range between 90 and 160° C. determined using differential scanning calorimetry (DSC), a molar mass distribution with a dispersivity of less than 28, determined using gel permeation chromatography (GPC), an ash content of less than 1 wt. %, and a proportion of volatile components of a maximum of 1 wt. %. Also provided is a precursor fiber based on the fusible lignin, as well as a method for the production thereof Also provided is a method for producing a carbon fiber from the precursor fiber. | 07-18-2013 |
| 20140134094 | OIL AGENT FOR CARBON FIBER PRECURSOR ACRYLIC FIBER, OIL COMPOSITION FOR CARBON FIBER PRECURSOR ACRYLIC FIBER, PROCESSED-OIL SOLUTION FOR CARBON-FIBER PRECURSOR ACRYLIC FIBER, AND METHOD FOR PRODUCING CARBON-FIBER PRECURSOR ACRYLIC FIBER BUNDLE, AND CARBON-FIBER BUNDLE USING CARBON-FIBER PRECURSOR ACRYLIC FIBER BUNDLE - The present invention relates to an oil agent for carbon-fiber precursor acrylic fiber, including at least one type of compound selected from groups of a hydroxybenzoate (Compound A), a cyclohexanedicarboxylic acid (Compound B and C), a cyclohexanedimethanol and/or a cyclohexanediol and a fatty acid (Compound D and E) and an isophoronediisocyanate-aliphatic alcohol adduct (Compound F), an oil composition for carbon-fiber precursor acrylic fiber, a processed-oil solution for carbon-fiber precursor acrylic fiber, and a method for producing a carbon-fiber precursor acrylic fiber bundle, and a carbon-fiber bundle using the carbon-fiber precursor acrylic fiber bundle. | 05-15-2014 |
| 20150044125 | ACRYLIC-FIBER FINISH FOR CARBON-FIBER PRODUCTION, ACRYLIC FIBER FOR CARBON-FIBER PRODUCTION, AND CARBON-FIBER PRODUCTION METHOD - An acrylic-fiber finish for carbon fiber production is prepared into a stable emulsion and applied to a carbon-fiber precursor to prevent gumming up of finish components in precursor production and carbon fiber fusing in baking process. The acrylic-fiber finish is used for carbon-fiber production and includes a modified silicone having a modifying group containing a nitrogen atom and an acidic phosphate ester represented by the following chemical formula (1). | 02-12-2015 |
| 423447500 | With metal, metal compound, or phosphorus compound | 1 |
| 20090311168 | System and method for manufacturing carbon nanotubes - A system and method for manufacturing carbon nanotubes via epitaxial growth from a source of supersaturated carbon solution is disclosed, whereby selection of the diameter, length, and chirality of single-walled or multi-walled nanotubes is enabled. | 12-17-2009 |
