Patents by Inventor Arata Suda
Arata Suda has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 8877031Abstract: The electrolysis solution for electrolytic ceramic coating includes water, a water-soluble zirconium compound, a complexing agent, carbonate ion, and at least one member selected from the group consisting of an alkali metal ion, ammonium ion and an organic alkali. Te zirconium compound is included at a concentration (X) in terms of zirconium of 0.0001 to 1 mol/L, the complexing agent is included at a concentration (Y) of 0.0001 to 0.3 mol/L, the carbonate ion is included at a concentration (Z) of 0.0002 to 4 mol/L, a ratio of the concentration (Y) of the complexing agent to the concentration (X) in terms of zirconium (Y/X) is at least 0.01, a ratio of the concentration (Z) of the carbonate ion to the concentration (X) in terms of zirconium (Z/X) is at least 2.5, and the electrolysis solution has an electrical conductivity of 0.2 to 20 S/m.Type: GrantFiled: December 10, 2009Date of Patent: November 4, 2014Assignee: Nihon Parkerizing Co., Ltd.Inventors: Arata Suda, Tomoyoshi Konishi
-
Patent number: 8585887Abstract: An aluminum alloy member includes a main body including an aluminum alloy serving as a base material, and an electrolytic oxidation ceramic coating coated at a portion of a surface of the main body and including a most outer layer and an inner layer which is arranged close to the main body relative to the most outer layer, the inner layer in which an aluminum oxide is richer than the most outer layer, the most outer layer in which a volume of a titanium oxide or a total volume of the titanium oxide and a zirconium oxide is richer than the inner surface.Type: GrantFiled: September 15, 2012Date of Patent: November 19, 2013Assignees: Aisin Seiki Kabushiki Kaisha, Nihon Parkerizing Co., Ltd.Inventors: Ichiro Hiratsuka, Mie Tokuhara, Tomoyoshi Konishi, Arata Suda
-
Patent number: 8545642Abstract: Providing an iron and steel material having quenched surface part, avoiding oxidation of a compound layer formed on the surface of the iron and steel material due to quenching, its production method, and an induction-quenched component. A quenched iron and steel material 10 comprises an iron and steel material 11, a compound layer 12 formed on the iron and steel material 11, and an antioxidant cover layer 13 formed on the compound layer 12. The iron and steel material 11 has a hardened layer having a given depth, and the surface of the iron and steel material 11 has enhanced hardness.Type: GrantFiled: May 19, 2009Date of Patent: October 1, 2013Assignees: Neturen Co., Ltd., Nihon Parkerizing Co., Ltd.Inventors: Kengo Fukazawa, Yoshitaka Misaka, Kazuhiro Kawasaki, Yoshihiro Ikeda, Masaaki Beppu, Arata Suda
-
Publication number: 20130015072Abstract: An aluminum alloy member includes a main body including an aluminum alloy serving as a base material, and an electrolytic oxidation ceramic coating coated at a portion of a surface of the main body and including a most outer layer and an inner layer which is arranged close to the main body relative to the most outer layer, the inner layer in which an aluminum oxide is richer than the most outer layer, the most outer layer in which a volume of a titanium oxide or a total volume of the titanium oxide and a zirconium oxide is richer than the inner surface.Type: ApplicationFiled: September 15, 2012Publication date: January 17, 2013Applicants: Nihon Parkerizing Co., Ltd., AISIN SEIKI KABUSHIKI KAISHAInventors: Ichiro Hiratsuka, Mie Tokuhara, Tomoyoshi Konishi, Arata Suda
-
Publication number: 20120000783Abstract: The electrolysis solution for electrolytic ceramic coating includes water, a water-soluble zirconium compound, a complexing agent, carbonate ion, and at least one member selected from the group consisting of an alkali metal ion, ammonium ion and an organic alkali. Te zirconium compound is included at a concentration (X) in terms of zirconium of 0.0001 to 1 mol/L, the complexing agent is included at a concentration (Y) of 0.0001 to 0.3 mol/L, the carbonate ion is included at a concentration (Z) of 0.0002 to 4 mol/L, a ratio of the concentration (Y) of the complexing agent to the concentration (X) in terms of zirconium (Y/X) is at least 0.01, a ratio of the concentration (Z) of the carbonate ion to the concentration (X) in terms of zirconium (Z/X) is at least 2.5, and the electrolysis solution has an electrical conductivity of 0.2 to 20 S/m.Type: ApplicationFiled: December 10, 2009Publication date: January 5, 2012Inventors: Arata Suda, Tomoyoshi Konishi
-
Patent number: 7997884Abstract: An oil pump has: a base part having a working chamber; and a rotor provided rotatably in the working chamber. The base part is configured by a plurality of split bodies. At least one of the plurality of split bodies is made of aluminum alloy, and on which an opposed sliding surface made of a ceramic film is formed. The ceramic film of the opposed sliding surface has a hardness of approximately Hv 500 to 1100 and a surface roughness of approximately 2 to 8 micrometers, and contains ?-alumina and zirconia.Type: GrantFiled: September 8, 2008Date of Patent: August 16, 2011Assignees: JTEKT Corporation, Nihon Parkerizing Co., Ltd.Inventors: Toshiyuki Saito, Takumi Mio, Masahiro Suzuki, Tomoyoshi Konishi, Arata Suda, Mikito Toyoshima
-
Publication number: 20110186186Abstract: Providing an iron and steel material having quenched surface part, avoiding oxidation of a compound layer formed on the surface of the iron and steel material due to quenching, its production method, and an induction-quenched component. A quenched iron and steel material 10 comprises an iron and steel material 11, a compound layer 12 formed on the iron and steel material 11, and an antioxidant cover layer 13 formed on the compound layer 12. The iron and steel material 11 has a hardened layer having a given depth, and the surface of the iron and steel material 11 has enhanced hardness.Type: ApplicationFiled: May 19, 2009Publication date: August 4, 2011Inventors: Kengo Fukazawa, Yoshitaka Misaka, Kazuhiro Kawasaki, Yoshihiro Ikeda, Masaaki Beppu, Arata Suda
-
Publication number: 20100032301Abstract: An aluminum alloy member includes a main body including an aluminum alloy serving as a base material, and an electrolytic oxidation ceramic coating coated at a portion of a surface of the main body and including a most outer layer and an inner layer which is arranged close to the main body relative to the most outer layer, the inner layer in which an aluminum oxide is richer than the most outer layer, the most outer layer in which a volume of a titanium oxide or a total volume of the titanium oxide and a zirconium oxide is richer than the inner surface.Type: ApplicationFiled: August 6, 2009Publication date: February 11, 2010Applicants: Nihon Parkerizing Co., Ltd., AISIN SEIKI KABUSHIKI KAISHAInventors: Ichiro Hiratsuka, Mie Tokuhara, Tomoyoshi Konishi, Arata Suda
-
Publication number: 20090068049Abstract: An oil pump has: a base part having a working chamber; and a rotor provided rotatably in the working chamber. The base part is configured by a plurality of split bodies. At least one of the plurality of split bodies is made of aluminum alloy, and on which an opposed sliding surface made of a ceramic film is formed. The ceramic film of the opposed sliding surface has a hardness of approximately Hv 500 to 1100 and a surface roughness of approximately 2 to 8 micrometers, and contains ?-alumina and zirconia.Type: ApplicationFiled: September 8, 2008Publication date: March 12, 2009Applicants: JTEK Corporation, Nihon Parkerizing Co., Ltd.Inventors: Toshiyuki Saito, Takumi Mio, Masahiro Suzuki, Tomoyoshi Konishi, Arata Suda, Mikito Toyoshima
-
Publication number: 20040112471Abstract: An aqueous surface conditioner for use in a phosphating treatment is provided which contains crystals having an average diameter of 5 &mgr;m or less in an amount of at least 0.1 g/L. The crystals are selected to have a two-dimensional epitaxy that matches within 3% of misfit with the crystal lattice of one phosphate coating selected from among (1) hopeite/Zn3(PO4)2.4H2O) and/or phosphophyllite (Zn2Fe(PO4)2.4H2O), (2) scholzite (CaZn2(PO4)2.2H2O) and (3) hureaulite (Mn5(PO4)2[PO3(OH]2.4H2O).Type: ApplicationFiled: January 26, 2004Publication date: June 17, 2004Inventors: Yoshio Moriya, Arata Suda, Yasushi Takagi
-
Patent number: 5399209Abstract: A chromate conversion coating with excellent cold workability and protection against corrosion after subsequent painting can be formed on metal surfaces, particularly on galvanized steel sheet, by drying in place on the metal an amount of an acidic aqueous composition comprising (A) from 4.0 to 51.0 g/L of hexavalent chromium; (B) from 6.0 to 38.0 g/L of trivalent chromium; (C) from 0.5 to 97.0 g/L of phosphate ions; (D) a component selected from the group consisting of sulfate ions, nitrate ions, fluoride ions, and mixtures thereof; and (E) a component selected from the group consisting of cations of Cu, Co, Ni, Sn, Fe, and Pb and mixtures thereof, wherein the trivalent chromium/hexavalent chromium weight ratio is in the range from 0.2 to 1.4. Preferably the amount of aqueous composition used is such as to produce a chromium add-on of from 20-160 mg/m.sup.2.Type: GrantFiled: March 1, 1993Date of Patent: March 21, 1995Assignee: Henkel CorporationInventors: Arata Suda, Takao Ogina
-
Patent number: 5366567Abstract: A chromating composition including hexavalent and trivalent chromium, phosphate ions, silica, and a silane coupling agent and with ratios among its components within certain specified ranges produces a protective layer on the surface of zinc coated steel treated with the composition that has an excellent alkali resistance, corrosion resistance, coatability, and welding tolerance.Type: GrantFiled: April 7, 1993Date of Patent: November 22, 1994Assignee: Henkel CorporationInventors: Takao Ogino, Arata Suda, Takayuki Aoki, Mitsuyuki Koga
-
Patent number: 5230750Abstract: A chromating liquid for forming a chromate film on a Zn or Zn-alloy plated steel sheet, is prepared by adding and mixing a silane coupling agent in a molar ratio of from 0.05 to 0.3 relative to Cr.sup.6+ contained in an aqueous chromating liquid which contains 1-30 g/l of Cr.sup.6+ and 1-30 g/l of Cr.sup.3+ at a weight ratio of Cr.sup.6+ /Cr.sup.3+ ranging from 0.1 to 2.0; and further contains 1-59 g/l of hydrofluoric acid and 1-59 g/l of phosphoric acid at total of hydrofluoric acid and phosphoric acid ranging from 2 to 60 g/l and at a weight ratio of (fluoride ions+phosphate ions)/Cr.sup.3+ ranging from 0.5 to 3.5. and, further said chromating liquid is applied on a surface of the zinc-based plated steel sheet and is then dried, thereby forming the chromate film having a coating amount of from 10 to 150 mg/m.sup.2 in terms of the chromium.Type: GrantFiled: October 2, 1991Date of Patent: July 27, 1993Assignee: Nihon Parkerizing Co., Ltd.Inventors: Yoshio Shindou, Motoo Kabeya, Shiro Fujii, Makoto Yoshida, Teruaki Izaki, Takao Ogino, Arata Suda, Takayuki Aoki