Hoden Seimitsu Kako Kenkyusho Co., Ltd. Patent applications |
Patent application number | Title | Published |
20150273603 | ELECTRODE, ELECTROCHEMICAL MACHINING APPARATUS USING THE ELECTRODE, ELECTROCHEMICAL MACHINING METHOD, AND PRODUCT MACHINED BY THE METHOD - Provided is an electrode capable of increasing a degree of freedom in machining shape with a simple structure, an electrochemical machining apparatus using the electrode, an electrochemical machining method, and a product machined by the method. An electrode | 10-01-2015 |
20150231845 | STACKING APPARATUS AND STACK MANUFACTURING SYSTEM - To provide a stacking apparatus and a stack manufacturing system having high accuracy and productivity. A stacking apparatus | 08-20-2015 |
20150224559 | STACKING APPARATUS AND STACK MANUFACTURING SYSTEM - To provide a stacking apparatus and a stack manufacturing system having high accuracy and productivity. A stacking apparatus | 08-13-2015 |
20150202722 | DIE AND METHOD OF PRODUCING DIE - Provided are a low-cost and highly-precise structure-molding die that only requires a short production time, and a method of producing the die. The die is characterized by including: a plate-like first member | 07-23-2015 |
20140283695 | OPERATION METHOD OF ELECTRIC PRESS WORKING MACHINE - An operation method of an electric press working machine including a frame body, a crown, and a plurality of support posts, a first slide that slides on the support posts, a second slide that slides on the support posts, a first-side drive source that drives the first slide, a second-side drive source that drives the second slide, and either a first upper die that is attached to correspond to the first slide or a second upper die that is attached to correspond to the second slide or both. The method includes: a step of moving the first and second slides to a first position; a step of moving the second slide to a second position while keeping the first slide at the first position; and a step of moving the second slide to a third position while keeping the first slide at the first position. | 09-25-2014 |
20110165426 | AQUEOUS SOLUTION FOR BLACKENING CHEMICAL CONVERSION COATING OF ZINC OR ZINC ALLOY SURFACE AND METHOD OF FORMING BLACKENED ANTI-CORROSION COATING FILM USING THE AQUEOUS SOLUTION FOR THE CHEMICAL CONVERSION COATING - The present invention provides a chromium-free surface treating method capable of treating a surface of a metallic member having a surface of zinc or zinc alloy so as to provide good blackness and rust inhibitive performance, and an aqueous solution for chemical conversion coating that can be applied to the treatment method. The aqueous solution contains neither trivalent or hexavalent chromium ion, and contains 5-20 g of phosphate ions per liter, 0.1-3 g of divalent iron ions per liter, 1-10 g of divalent manganese ions per liter, and 1-3 g of nitrate ions per liter. The aqueous solution has a pH of 1-3. A black coating film of Fe | 07-07-2011 |
20110143130 | CHROMIUM-FREE METAL SURFACE TREATMENT AGENT - Provided is a chromium-free metal surface treatment agent excellent in rust inhibitive performance which can be used in a surface treatment of metal products, in particular, galvanized metal products. The metal surface treatment agent consists essentially of a siliceous binder solution comprising water and/or alcohol as a solvent, and the concentration of the silica component is 8 to 25% by weight. In particular, a metal surface treatment agent containing an alcoholic solution of alkoxysilane oligomer having a weight averaged molecular weight of 1000 to 10000, which is obtained by hydrolyzed condensation polymerization of alkoxysilane, can suppress the occurrence of white rusting for a long time. It is preferred that 3 to 25 parts by weight of a dispersed nano-sized titanium dioxide powder having an average primary particle size of not more than 70 nm, per 100 parts by weight of the silica component be suspended in the siliceous binder solution. The rust inhibitive performance of the metal surface treatment agent can be further improved by using an alcohol-soluble polyvinyl butyral resin and by adding a silane coupling agent having a vinyl or epoxy group as a functional group, in combination with a dispersed nano-sized powder of titanium dioxide. | 06-16-2011 |
20090169875 | CHROMIUM-FREE RUST-INHIBITIVE SURFACE TREATMENT AGENT FOR METAL PARTS WITH ZINC SURFACES AND METAL PARTS WITH ZINC SURFACES COATED WITH RUST-INHIBITIVE SURFACE COATED FILM - Disclosed is a chromium-free rust-inhibitive surface treatment agent to form a siliceous film that rarely cracks or peels off and yields an excellent rust-inhibitive performance on zinc surfaces of a metal part. The chromium-free rust-inhibitive surface treatment agent is an alcoholic solution of alkoxysilane oligomer having weight-averaged molecular weight of 1,000 to 10,000, and 2.5 to 15% of silicon in molecules of the alkoxysilane oligomer has been replaced with titanium. To prepare partly titanium-replaced alkoxysilane oligomer, titanium compound, in which about a half of alkoxy groups in titanium tetraalkoxide has been chelated, is reacted with tetraalkoxysilane monomer or alkoxysilane oligomer in the alcoholic solution. | 07-02-2009 |