Inventors list

Assignees list

Classification tree browser

Top 100 Inventors

Top 100 Assignees


Kenichi Yoshioka

Kenichi Yoshioka, Ehime JP

Patent application numberDescriptionPublished
20080224440Crank for Bicycle and Method of Producing the Same - A crank for a bicycle, excellent in production efficiency, excellent in fatigue durability and rigidly, and light in weight. The crank has an outer shell made of a fiber-reinforced plastic, a first insert member configured and arranged to introduce a load from a pedal shaft, and a second insert member coupled to a bracket spindle and configured and arranged to transmit a load to a sprocket. The outer shell comprises at least two fiber-reinforced plastic members at least a part of each of which is molded in advance.09-18-2008
20090047516CONDUCTIVE COMPOSITE FIBER AND METHOD FOR PRODUCING SAME - Provided is an electrically conductive conjugate fiber formed by conjugating an electrically conductive layer (A) including 60 to 80% by weight of a thermoplastic resin and 20 to 40% by weight of electrically conductive particles and a protective layer (B) including 50 to 95% by weight of polyethylene terephthalate and 5 to 50% by weight of polyethylene-2,6-naphthalate, wherein the fiber has a degree of elongation (DE) of 100 to 350%. This provides an electrically conductive conjugate fiber which exhibits a small change with time in physical properties such as a degree of elongation or boiling water shrinkage during its transportation or storage, while having a certain degree of elongation.02-19-2009
20090117800ELECTRICALLY CONDUCTIVE COMPOSITE FIBER AND PROCESS FOR PRODUCING THE SAME - An electrically conductive composite fiber comprising an electrically conductive layer formed of a polyester-based polymer (A) having a melting point of 200° C. or higher and containing from 23 to 33% by weight of electrically conductive carbon black, and a protective layer formed of a polyester-based polymer (B) having a melting point of 210° C. or higher, wherein the difference between the SP value of the (A) and the SP value of the (B) is adjusted to not greater than a predetermined value and the fiber strength and the elongation at break are adjusted within certain ranges. This can make it possible to obtain an electrically conductive composite fiber that has a superior antistatic performance, which is not degraded very much over a practical wearing for a long term, though it contains only a relatively small amount of electrically conductive carbon black, and that is suitable for the field of clothing such as clean room wears and working wears.05-07-2009
20090318049CONDUCTIVE SHEATH-CORE CONJUGATE FIBER AND PROCESS FOR PRODUCING THE SAME - In an electrically conductive sheath-core conjugate fiber including an electrically conductive layer made of a thermoplastic polymer (A) containing electrically conductive carbon black fine particles which constitutes a sheath component and a protective layer made of a fiber-forming thermoplastic polymer (B) which constitutes a core component, the ratio of the (A) to the total weight of the (A) and the (B) is 10 to 35% by weight, the L12-24-2009
20100178487PREPREG AND CARBON FIBER REINFORCED COMPOSITE MATERIALS - A prepreg containing a carbon fiber [A] and a thermosetting resin [B], and in addition, satisfying at least one of the following (1) and (2). 07-15-2010
20110097568EPOXY RESIN COMPOSITION, FIBER-REINFORCED COMPOSITE MATERIAL, AND METHOD FOR PRODUCING THE SAME - Disclosed herein are an epoxy resin composition for fiber-reinforced composite materials which has low viscosity, high Tg, high elastic modulus, and excellent fracture toughness and a fiber-reinforced composite material using such an epoxy resin composition which has excellent thermal properties, compressive strength, impact resistance, fatigue resistance, and open-hole tensile strength and which is suitable for producing structural parts of aircraft and the like. The epoxy resin composition comprises at least a given bifunctional epoxy resin as a component (A), a liquid aromatic diamine curing agent as a component (B), and core-shell polymer particles as a component (C), wherein the core-shell polymer particles as the component (C) contain epoxy groups in their shell and have a volume-average particle size of 50 to 300 nm.04-28-2011
20110147674PREPREG AND CARBON FIBER REINFORCED COMPOSITE MATERIALS - A prepreg containing a carbon fiber [A] and a thermosetting resin [B], and in addition, satisfying at least one of the following (1) and (2). 06-23-2011
20110151235PREPREG AND CARBON FIBER REINFORCED COMPOSITE MATERIALS - A prepreg containing a carbon fiber [A] and a thermosetting resin [B], and in addition, satisfying at least one of the following (1) and (2). 06-23-2011

Patent applications by Kenichi Yoshioka, Ehime JP

Kenichi Yoshioka, Matsuyama-Shi JP

Patent application numberDescriptionPublished
20110048638TITANIUM OR TITANIUM ALLOY, ADHESIVE RESIN COMPOSITION, PREPREG AND COMPOSITE MATERIAL - The present invention relates to a composite material using titanium or a titanium alloy, and concerns such a composite material obtained through processes in which after an imidazole compound has been applied to the surface of titanium or a titanium alloy, an adhered is adhered thereto. The composite material of the present invention is obtained by adhering the adhere thereto by using an adhesive resin composition containing a thermoplastic resin having a fracture energy release rate G03-03-2011

Patent applications by Kenichi Yoshioka, Matsuyama-Shi JP

Kenichi Yoshioka, Kanagawa JP

Patent application numberDescriptionPublished
20090252271AXIAL VOID FRACTION DISTRIBUTION MEASUREMENT METHOD AND NEUTRON MULTIPLICATION FACTOR EVALUATING METHOD - A first intensity A10-08-2009

Kenichi Yoshioka, Yokohama-Shi JP

Patent application numberDescriptionPublished
20080205574CONTROL ROD FOR NUCLEAR REACTOR AND METHOD OF MANUFACTURING CONTROL ROD - A control rod for nuclear reactors includes four wings including neutron absorbers containing hafnium, a front end structural member which has a cross shape in cross section and includes brackets bonded to the leading ends of the wings, and a terminal end structural member which has a cross shape in cross section and includes brackets bonded to the tailing ends of the wings. The four wings are bonded to a wing-bonding member including a cross-shaped center shaft so as to form a cross shape. The front end structural member and the wing-bonding member are made of a zirconium alloy. The wings include neutron-absorbing plates having neutron-absorbing portions and each have an outer surface which is opposed to a fuel assembly and at which a hafnium-zircaloy composite member covered with zircaloy is disposed. The neutron-absorbing plates are opposed to each other with trap spaces disposed therebetween.08-28-2008
20090028284METHOD OF CONTROLLING CRITICALITY OF NUCLEAR FUEL CYCLE FACILITY, METHOD OF PRODUCING URANIUM DIOXIDE POWDER, REACTOR FUEL ROD, AND FUEL ASSEMBLY - A method of controlling the criticality of a nuclear fuel cycle facility includes steps of producing a reactor fuel by adding less than 0.1% by weight of gadolinia to a uranium dioxide powder with a uranium enrichment of greater than 5% by weight and controlling the effective neutron multiplication factor of a uranium dioxide system in a step of handling the reactor fuel to be less than or equal to the maximum of the effective neutron multiplication factor of a uranium dioxide system with a uranium enrichment of 5% by weight.01-29-2009