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    • 7. 发明授权
    • Cephem compounds
    • 头孢烯化合物
    • US06468995B1
    • 2002-10-22
    • US08781924
    • 1996-12-30
    • Kohji KawabataTakeshi TerasawaAyako OhkiFumiyuki ShiraiHirofumi Yamamoto
    • Kohji KawabataTakeshi TerasawaAyako OhkiFumiyuki ShiraiHirofumi Yamamoto
    • C07D50134
    • C07D501/00Y02P20/55
    • A compound of the formula: wherein R1 is amino or protected amino; R2 is hydrogen, lower alkyl or hydroxy protective group; R3 is carboxy or protected carboxy; R4 is an unsubstituted 5, 6 or 7-membered heteromonocyclic group containing two nitrogen atoms as heteroatoms, and which optionally further contains one oxygen or sulfur atom; or R4 is said 5, 6 or 7-membered heteromonocyclic group substituted by 1 to 4 groups selected from the group consisting of lower alkyl, lower alkoxy, lower alkylthio, lower alkylamino, cyclo(lower)alkyl, cyclo(lower)alkenyl, halogen, amino, protected amino, protected hydroxy, cyano, nitro, carboxy, hydroxy(lower)alkyl, amino(lower)alkyl, and carbamoyloxy; and n is 1 or 2.
    • 下式的化合物:其中R 1是氨基或被保护的氨基; R 2是氢,低级烷基或羟基保护基; R 3是羧基或被保护的羧基; R 4是未取代的5,6或7元杂单环基, 杂原子,并且任选地还含有一个氧或硫原子; 或R4是由1-4个选自低级烷基,低级烷氧基,低级烷硫基,低级烷基氨基,环(低级)烷基,环(低级)烯基,卤素 ,氨基,保护的氨基,保护的羟基,氰基,硝基,羧基,羟基(低级)烷基,氨基(低级)烷基和氨基甲酰氧基; andn是1或2。
    • 8. 发明授权
    • High toughness steel
    • 高韧性钢
    • US4842816A
    • 1989-06-27
    • US77976
    • 1987-07-27
    • Akihiro MiyasakaHiroyo HagaTakeshi Terasawa
    • Akihiro MiyasakaHiroyo HagaTakeshi Terasawa
    • C22C38/00C22C38/14C22C38/50C22C38/58
    • C22C38/14
    • A steel composition particularly suitable for the manufacture of electric resistance welded pipes for use in most hostile environments and able to display excellent sour resistance and high toughness. The aluminum content of the steel composition is reduced to not more than 0.005%, while from 0.006 to 0.2% in total of one or both of titanium and zirconium is used instead for steel containing 0.0005 to 0.008% Ca. The steel, apart from iron and unavoidable impurities further contains:0.01 to 0.35% C0.02 to 0.5% Si0.1 to 1.8% Mnnot more than 0.015% P, andnot more than 0.003% SCu, Ni, Cr, Mo, Nb and V may be added in appropriate amounts to enhance the steel performance.
    • 一种钢组合物,特别适用于制造用于大多数恶劣环境的电阻焊管,能够显示出优异的耐酸性和高韧性。 钢组合物的铝含量降低到不超过0.005%,而代替含有0.0005至0.008%Ca.a的钢代替钛和锆中的一种或两种,从0.006至0.2%。 除了铁和不可避免的杂质之外,钢还含有:0.01〜0.35%的C 0.02〜0.5%的Si 0.1〜1.8%的Mn不大于0.015%的P,不超过0.003%的S Cu,Ni,Cr,Mo,Nb 并且可以以适当的量添加V以提高钢的性能。