Graphite filaments having tubular structure and method of forming the same
October 22, 2016. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3457042 Hollow filamentary structures Reinforced tubular materials and process Method for manufacturing graphite whiskers using condensed polycyclic hydrocarbons Graphite fiber tapered shafts Composite tubular elements Pitch-based carbon or graphite fiber and process for preparation thereof Carbon fibrils, method for producing same and compositions containing same Process for production of a carbon filament Method of manufacturing microscopic tube material InventorAssigneeApplicationNo. 735140 filed on 10/22/1996US Classes:428/367, Including free carbon or carbide or therewith (not as steel)423/445B, Fullerene (e.g., C60, C70, etc.)423/447.1, Fiber, fabric, or textile423/447.3, From gaseous reactants423/448, Graphite428/34.1, HOLLOW OR CONTAINER TYPE ARTICLE (E.G., TUBE, VASE, ETC.)428/398Tubular or cellularExaminersPrimary: Edwards, NewtonAttorney, Agent or FirmInternational ClassesB32B 009/00D01F 009/12 D02G 003/00 C01B 031/04 Foreign Application Priority Data1991-10-31 JPAbstractA graphite filament which has carbon as a basic structural unit and which have a tubular shape being formed with a helical structure with the carbon hexagons as a main structure and with an outer diameter of 30 nm or less. The tubular lattices a1 to a3 are a multiple structure and the interval between inner and outer adjacent tubules is about 0.34 nm, which is similar to the interval between basal planes of graphitic structure. The graphite filament is a new carbon filament material having a structure that is different from a normal graphite filament.Other References
Field of SearchHOLLOW OR CONTAINER TYPE ARTICLE (E.G., TUBE, VASE, ETC.)Including free carbon or carbide or therewith (not as steel) Wound or wrapped core or coating (i.e., spiral or helical) Coating on discrete and individual rods, strands or filaments Tubular or cellular Silane, silicone or siloxane in coating Graphite Fullerene (e.g., C60, C70, etc.) From gaseous reactants Directly from fluid hydrocarbon only Diamond Product Fiber, fabric, or textile |
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