Patents Represented by Attorney Oblon, Spivak, McClellnad, Maier & Neustadt, P.C.

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  • Dispersion-shifted fiber
    Patent number: 7046889
    Abstract: A dispersion shifter fiber, which has zero dispersion wavelength on a long wavelength side beyond 1640 nm, a wavelength dispersion of ?1.0 to ?10.0 ps/nm/km at a wavelength range of 1530–1625 nm, a dispersion slope of less than 0.07 ps/nm2/km, a polarization mode dispersion of not more than 0.1 ps/(km)1/2 at a wavelength of 1550 nm, and a core cross-sectional area of 40–70 ?m2 at the wavelength of 1550 nm.
    Type: Grant
    Filed: September 8, 2003
    Date of Patent: May 16, 2006
    Assignee: The Furukawa Electric Co., Ltd.
    Inventor: Fumio Takahashi
  • PROCESSES FOR PRODUCING 7-ISOINDOLINE-QUINOLONECARBOXYLIC ACID DERIVATIVE AND ITS INTERMEDIATE, AS WELL AS SALT OF 7-ISOINDOLINE-QUINOLONECARBOXYLIC ACID DERIVATIVE, ITS HYDRATE AND COMPOSITION COMPRISING THE SAME AS ACTIVE INGREDIENT
    Patent number: 6482835
    Abstract: Processes for producing a 7-isoindoline-quinolonecarboxylic acid derivative represented by the general formula [1] which is useful as an antibacterial agent, and an intermediate thereof: comprising reacting, in the presence of metallic palladium, an isoindoline-5-boronic acid, or of a 5-halogenoisoindoline, in the presence of a palladium catalyst, with a dialkoxyborane or an alkoxydiborane.
    Type: Grant
    Filed: September 25, 2001
    Date of Patent: November 19, 2002
    Assignee: Toyama Chemical Co., Ltd.
    Inventors: Minoru Yamada, Shoichi Hamamoto, Kazuya Hayashi, Kazuko Takaoka, Hiroko Matsukura, Minako Yotsuji, Kenji Yonezawa, Katsuji Ojima, Tamotsu Takamatsu, Kyoko Taya, Hirohiko Yamamoto, Taro Kiyoto, Hironori Kotsubo