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Kazuhiko Yamamoto, Yuichi Miyake, Chikara Okada: Alloy ingot for permanent magnet, anisotropic powders for permanent magnet, method for producing same and permanent magnet. Santoku Metal, Darby and Darby, January 24, 1995: US05383978 (45 worldwide citation)

An alloy ingot for permanent magnet consists essentially of rare earth metal and iron and optionally boron. The two-component alloy ingot contains 90 vol % or more of crystals having a crystal grain size along a short axis of 0.1 to 100 .mu.m and that along a long axis of 0.1 to 100 .mu.m. The three ...


2
Shinyao Yao, Hideo Yokoi, Tadatoshi Murota, Kazuhiro Yamamoto, Shigeru Aozasa: Composite oxide having oxygen absorbing and desorbing capability and method for preparing same. Santoku Metal, Darby & Darby P C, December 3, 1996: US05580536 (25 worldwide citation)

A composite oxide having oxygen absorbing and desorbing capability contains 4.99-98.89% by weight of cerium oxide, 1-95% by weight of zirconium oxide, 0.01-20% by weight of hafnium oxide, and 0.1-10% by weight of an additional metal oxide selected from titanium oxide, tungsten oxide, nickel oxide, c ...


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Akihito Kaneko: Rare earth metal-nickel hydrogen storage alloy, process for producing the same, and anode for nickel-hydrogen rechargeable battery. Santoku Metal, Darby & Darby, November 24, 1998: US05840166 (22 worldwide citation)

A rare earth metal-nickel hydrogen storage alloy having a composition represented by the formula (1) (R.sub.1-x L.sub.x) (Ni.sub.1-y M.sub.y).sub.z . . . (1) (R: La, Ce, Pr, Nd; L: Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Y, Sc, Mg, Ca; M: Co, Al, Mn, Fe, Cu, Zr, Ti, Mo, Si, V, Cr, Nb, Hf, Ta, W, B, C; 0.05. ...


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Shinya Yao, Hideo Yokoi, Tadatoshi Murota, Kazuhiro Yamamoto, Shigeru Aozasa: Composite oxide having oxygen absorbing and desorbing capability. Santoku Metal, Darby & Darby P C, November 5, 1996: US05571492 (19 worldwide citation)

A composite oxide having oxygen absorbing and desorbing capability contains 4.99-98.99% by weight of cerium oxide, 1-95% by weight of zirconium oxide and 0.01-20% by weight of hafnium oxide. The composite oxide includes .PHI.' phase as a crystal phase and has oxygen absorbing and desorbing capabilit ...


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Yamamoto Kazuhiko, Miyake Yuichi, Okada Chikara: Permanent magnet containing rare earth metal, boron and iron.. Santoku Metal, January 4, 1995: EP0632471-A2 (16 worldwide citation)

A permanent magnet is obtained by pulverizing, molding and sintering a starting material containing an alloy ingot. The alloy ingot contains not less than 90% by volume of prismatic crystals each having a prismatic crystal grain size of 0.1 to 50 mu m along a short axis thereof and a prismatic cryst ...


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Tanibuchi Yuji, Yamamoto Kazuhiko, Okada Chikara: Age-precipitating rare earth metal-nickel alloy, its manufacture, and negative electrode for nickel-hydrogen secondary cell. Santoku Metal, January 2, 1997: EP0751229-A1 (12 worldwide citation)

An AB5 type age-precipitating rare earth metal-nickel alloy having a composition expressed by (1): R(Ni1-xMx)5+y where R represents one or more of rare-earth elements including Y, M represents one or more selected from a group of Co, Al, Mn, Fe, Cu, Zr, Ti, Mo, W, and B and x and y respectively sati ...


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Hideo Yokoi, Tadatoshi Murota, Kazuhito Fujiwara, Hirofumi Takemori: Composite oxide having oxygen absorbing and desorbing capability and method for preparing the same. Santoku Metal, Darby & Darby, August 31, 1999: US05945370 (11 worldwide citation)

A composite oxide having oxygen absorbing and desorbing capability containing 90 to 100 weight % total of cerium, zirconium, and hafnium based on a total amount of metals contained in the composite oxide, the total amount of cerium, zirconium, and hafnium consisting of 14.0 to 70.5 at % cerium, 29.4 ...


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Tadatoshi Murota, Kazuhiro Yamamoto, Shigeru Aozasa: Compound oxide having oxygen absorbing and desorbing capability and method for preparing same. Santoku Metal, Darby & Darby, December 26, 1995: US05478543 (11 worldwide citation)

A compound oxide having oxygen absorbing and desorbing capability contains 4.99-98.99% by weight of cerium oxide, 1-95% by weight of zirconium oxide and 0.01-20% by weight of hafnium oxide. The compound oxide has an oxygen absorbing and desorbing capability of at least 100 .mu.mol/g at 400-700.degre ...


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Shinya Yao, Hideo Yokoi, Tadatoshi Murota, Kazuhiro Yamamoto, Shigeru Aozasa: Method for preparing composite oxide having oxygen absorbing and desorbing capability. Santoku Metal, Darby & Darby P C, December 10, 1996: US05582785 (10 worldwide citation)

A method for preparing a composite oxide having oxygen absorbing and desorbing capability involves the steps of: providing a starting composite oxide comprising cerium oxide, zirconium oxide, and hafnium oxide; subjecting the starting composite oxide to heating-deoxidation to give a deoxidized compo ...



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