Patents by Inventor Takumi Tokunaga

Takumi Tokunaga 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: 6743588
    Abstract: A compound represented by the formula 1, a salt, hydrate, solvate or stereoisomer thereof.
    Type: Grant
    Filed: January 11, 2002
    Date of Patent: June 1, 2004
    Assignee: Tosoh Corporation
    Inventors: Takumi Tokunaga, Takahiko Ishiguro, Ryuichi Horie
  • Patent number: 6586178
    Abstract: A nucleic acid probe which is a single-stranded nucleic acid complementary to a specific nucleic acid sequence and is labeled so as to give off a measurable fluorescent signal on hybridization with a nucleic acid containing the specific nucleic acid sequence, wherein the 3′ end of the probe is modified as represented by the following formula (1): wherein R is —COOH, —CONH2, —(CH2)nOH, —CH(OH)—CH2OH, or —CH[(CH2)n—NHR1]—CH2OH, R1 is H, a dye, or an amino protecting group such as Fmoc, and n is an integer of at least 1.
    Type: Grant
    Filed: March 6, 2000
    Date of Patent: July 1, 2003
    Assignee: Tosoh Corporation
    Inventors: Ryuichi Horie, Takahiko Ishiguro, Takumi Tokunaga, Takashi Yamamoto, Juichi Saitoh, Toshitaka Taya
  • Publication number: 20020192670
    Abstract: A compound represented by the formula 1, a salt, hydrate, solvate or stereoisomer thereof.
    Type: Application
    Filed: January 11, 2002
    Publication date: December 19, 2002
    Applicant: TOSOH CORPORATION
    Inventors: Takumi Tokunaga, Takahiko Ishiguro, Ryuichi Horie
  • Patent number: 5401752
    Abstract: Tetrahydroisoquinoline derivatives useful as fungicides are disclosed of formula [I]: ##STR1## wherein R.sup.1 represents C.sub.1 -C.sub.5 linear or branched alkyl, C.sub.2 -C.sub.5 linear or branched alkenyl, C.sub.2 -C.sub.5 linear or branched alkynyl; R.sup.2, R.sup.3, R.sup.4, R.sup.5 and R.sup.6, the same or different, represent hydrogen, C.sub.1 -C.sub.10 linear or branched alkyl, C.sub.3 -C.sub.10 linear or branched alkenyl, C.sub.2 -C.sub.10 linear or branched alkynyl, C.sub.1 -C.sub.10 linear or branched alkoxy, C.sub.2 -C.sub.10 linear or branched alkenyloxy, C.sub.2 -C.sub.10 linear or branched alkynyloxy, benzyloxy, hydroxy, haloalkyl, amino, mono- or di-substituted amino substituted with C.sub.1 -C.sub.4 linear or branched alkyl, phenyl or halogen; R.sup.2 and R.sup.3 may be bonded through a group of the formula --O--CH.sub.2).sub.m O-- wherein m represents integer of 1 or 2 or --CH.dbd.CH).sub.2 to form a ring; and R.sup.4 and R.sup.5 may be bonded through a group of the formula --O--CH.sub.2).
    Type: Grant
    Filed: January 15, 1992
    Date of Patent: March 28, 1995
    Assignee: Tosoh Corporation
    Inventors: Takumi Tokunaga, Teruhiko Ide, Hiroyuki Watanabe, Kenji Tsuzuki, Yasuhito Takasu
  • Patent number: 5330991
    Abstract: Tetrahydroisoquinoline derivatives of the following formula [I] and acid addition salts thereof, and ##STR1## (wherein in all of these formulae, R.sup.1 represents C.sub.1 -C.sub.5 straight or branched alkyl, C.sub.2 -C.sub.5 straight or branched alkenyl or C.sub.2 -C.sub.5 straight or branched alkynyl; R.sup.2 represents hydrogen atom, C.sub.1 -C.sub.10 straight or branched alkyl, C.sub.2 -C.sub.10 straight or branched alkenyl, C.sub.2 -C.sub.10 straight or branched alkynyl, C.sub.1 -C.sub.10 straight or branched alkoxy, C.sub.2 -C.sub.10 straight or branched alkenyloxy, C.sub.2 -C.sub.10 straight or branched alkynyloxy, or C.sub.1 -C.sub.10 straight or branched halogenated alkyl; R.sup.3, R.sup.4 R.sup.5 and R.sup.6, the same or different represent hydrogen atom, C.sub.1 -C.sub.10 straight or branched alkyl, C.sub.2 -C.sub.10 straight or branched alkenyl, C.sub.2 -C.sub.10 straight or branched alkynyl, C.sub.1 -C.sub.10 straight or branched alkoxy, C.sub.2 -C.sub.10 straight or branched alkenyloxy, C.sub.
    Type: Grant
    Filed: July 23, 1992
    Date of Patent: July 19, 1994
    Assignee: Tosoh Corporation
    Inventors: Takumi Tokunaga, Teruhiko Ide, Hiroyuki Watanabe, Kenji Tsuzuki
  • Patent number: 5068365
    Abstract: Disclosed is novel hexahydrophthalic anilide derivatives and herbicide compositions comprising the derivatives. The hexahydrophthalic anilide derivatives of this invention are represented by the formula [I], [II] or [III]. ##STR1## (wherein R.sup.1 represents non-substituted or substituted phenyl, R.sup.2 represents hydrogen or C.sub.1 -C.sub.4 alkyl, R.sup.3 represents C.sub.1 -C.sub.4 alkyl or C.sub.1 -C.sub.4 alkenyl) ##STR2## (wherein R.sup.4 and R.sup.5, the same or different, represent C.sub.1 -C.sub.4 alkyl, C.sub.1 -C.sub.4 alkenyl or C.sub.1 -C.sub.4 alkynyl, provided R.sup.4 and R.sup.5 are not C.sub.1 -C.sub.4 alkyl simultaneously) ##STR3## (wherein X.sup.1 and X.sup.2, the same or different, represent halogen, Y represents oxygen or sulfur, R.sup.6 represents C.sub.1 -C.sub.6 straight or cyclic alkyl which may be substituted with oxygen, R.sup.7 represents hydrogen or methyl, R.sup.8 represents cyano, C.sub.1 -C.sub.3 alkyl, C.sub.2 or C.sub.3 alkenyl, C.sub.2 -C.sub.4 alkynyl, C.sub.3 -C.sub.
    Type: Grant
    Filed: December 30, 1988
    Date of Patent: November 26, 1991
    Assignees: Tosoh Corporation, Agro-Kanesho Co., Ltd.
    Inventors: Takumi Tokunaga, Hiroyuki Watanabe, Kenji Tsuzuki, Sinzo Someya, Seigo Koura, Mikio Ito