Patents by Inventor Hirohito Kenmochi
Hirohito Kenmochi 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).
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Patent number: 4632781Abstract: A liquid crystal display device comprising a liquid crystal composition filled between one pair of electrode substrates at least one of which is transparent, said liquid crystal composition containing one or more blue dye(s) represented by the following general formula: ##STR1## wherein one of X and Y is amino group and the other is hydroxyl group; and R is alkyl group, alkoxy group, alkylthio group, aryl group, aralkyl group, aryloxy group, arylthio group, aralkyloxy group, aralkylthio group, halogen atom, piperidino group, piperazino group, morpholino group, pyrrolidino group or a group ##STR2## in which R.sub.1 and R.sub.2 are hydrogen atom, alkyl group, aryl group or aralkyl group; provided that the alkyl chain and the aryl ring in substituents R, R.sub.1 and R.sub.2 may optionally be substituted.Type: GrantFiled: December 24, 1984Date of Patent: December 30, 1986Assignees: Sumitomo Chemical Company, Limited, Nippon Electric Co., Ltd.Inventors: Yasutaka Shimidzu, Hirohito Kenmochi, Toshihiko Ueno, Chizuka Tani
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Patent number: 4536569Abstract: A compound of the formula, ##STR1## wherein R.sup.1 is methyl or ethyl, R.sup.2 and R.sup.3 are each C.sub.5 -- or C.sub.6 --alkyl, and Z is chlorine for use as a blue disperse dye of hydrophobic fibers, either alone or as a mixed dye in combination with anthraquinone; the compound combines low cost relative to anthraquinone with superior stability in the dye bath and excellent dyeability; mixed dyes retain anthraquinone-imparted brilliance of color, have good color fastness, dyeability and reproducibility characteristics, and maintain low cost.Type: GrantFiled: March 26, 1981Date of Patent: August 20, 1985Assignee: Sumitomo Chemical Company, LimitedInventors: Kiyoyasu Hashimoto, Kenji Yoshinaga, Yoshio Mori, Junzaburo Seino, Hirohito Kenmochi, Katsunobu Sato
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Patent number: 4505549Abstract: A liquid crystal display device comprising a liquid crystal composition filled between one pair of electrode substrates at least one of which is transparent, said liquid crystal composition containing one or more blue dye(s) represented by the following general formula: ##STR1## wherein one of X and Y is amino group and the other is hydroxyl group; and R is alkyl group, alkoxy group, alkylthio group, aryl group, aralkyl group, aryloxy group, arylthio group, aralkyloxy group, aralkylthio group, halogen atom, piperidino group, piperazino group, morpholino group, pyrrolidino group or a group ##STR2## in which R.sub.1 and R.sub.2 are hydrogen atom, alkyl group, aryl group or aralkyl group; provided that the alkyl chain and the aryl ring in substituents R, R.sub.1 and R.sub.2 may optionally be substituted.Type: GrantFiled: December 14, 1981Date of Patent: March 19, 1985Assignees: Sumitomo Chemical Company, Limited, Nippon Electric Co., Ltd.Inventors: Yasutaka Shimidzu, Hirohito Kenmochi, Toshihiko Ueno, Chizuka Tani
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Patent number: 4488992Abstract: A disperse dye of the formula, ##STR1## wherein R.sub.1 is an alkyl group having 5 to 6 carbon atoms, R.sub.2 is an alkyl group having 5 to 6 carbon atoms, a cyano-ethyl group, R.sub.3 is a hydrogen atom or a lower alkyl, amino or phenyl group, and Y.sub.1 and Y.sub.2 represent independently a hydrogen atom, a lower alkyl group, a lower alkoxy group, a halogen atom, a nitro group, a cyano group, a thiocyanate group or an alkylsulfonyl group, provided that both Y.sub.1 and Y.sub.2 are not hydrogen at the same time and Y.sub.1 is located at the 4- or 5-position, which is useful for dyeing hydrophobic fibers in brilliant red to violet shade with good fastnesses.Type: GrantFiled: December 6, 1979Date of Patent: December 18, 1984Assignee: Sumitomo Chemical Company, LimitedInventors: Kenji Yoshinaga, Kiyoyasu Hashimoto, Tetsuo Okaniwa, Hirohito Kenmochi
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Patent number: 4331584Abstract: Styryl compounds represented by the following general formula (I): ##STR1## wherein X.sub.1 is a halogen atom or a lower alkyl or lower alkoxy group, X.sub.2, Y.sub.1 and Y.sub.2 are each a hydrogen or halogen atom or a lower alkyl or lower alkoxy group, R.sub.1 and R.sub.3 are each an unsubstituted or substituted alkyl group, and R.sub.2 is a straight or branched C.sub.3 -C.sub.10 alkylene group or an alicyclic hydrocarbon-containing alkylene group, a process for producing them, a process for dyeing and printing hydrophobic fibers by their use and a process for coloring synthetic resins by their use. According to said processes a clear yellow color of high fastness can be given to the fibers and synthetic resins.Type: GrantFiled: May 23, 1980Date of Patent: May 25, 1982Assignee: Sumitomo Chemical Company, LimitedInventors: Masao Nishikuri, Michio Yamazaki, Kiyoteru Kojima, Junzaburo Seino, Hirohito Kenmochi
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Patent number: 4292247Abstract: 1-Amino-2,4-dibromoanthraquinone, which can be hydrolyzed to produce 1-amino-2-bromo-4-hydroxyanthraquinone which is an intermediate for the production of dyes, is produced by bromination of 1-aminoanthraquinone in a concentrated sulfuric acid at a temperature of 50.degree. to 150.degree. C.Type: GrantFiled: April 21, 1978Date of Patent: September 29, 1981Assignee: Sumitomo Chemical Company, LimitedInventors: Masao Nishikuri, Akira Takeshita, Hirohito Kenmochi
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Patent number: 4230852Abstract: A dye, which is suitable for dyeing cellulosic fiber materials, of the formula, ##STR1## wherein R and R' are each hydrogen, a C.sub.1 -C.sub.4 alkyl, or C.sub.1 -C.sub.4 hydroxyalkyl, m is an integer of 1 to 6, n and n' are each an integer of 2 to 4, and when m is 2 or more, n may be the same or different integer between 2 and 4, X is hydrogen or a group of the formula ##STR2## (wherein Q is a dye residue, R.sub.1 is hydrogen or a C.sub.1 -C.sub.4 alkyl and R.sub.2 is halogen); Y is hydrogen or a group of the formula ##STR3## (wherein Q' is a dye residue, and when m is 2 or more, Q's may be the same or different, R.sub.1 ' is hydrogen or a C.sub.1 -C.sub.4 alkyl and R.sub.2 ' is halogen); Z is hydrogen or a group of the formula ##STR4## (wherein Q" is a dye residue, R.sub.1 " is hydrogen or a C.sub.1 -C.sub.4 alkyl and R.sub.2 " is halogen, Q, Q' and Q" may independently be the same or different and X, Y and Z are not hydrogen at the same time).Type: GrantFiled: December 18, 1978Date of Patent: October 28, 1980Assignee: Sumitomo Chemical Company, LimitedInventors: Yoshihisa Sueda, Suketsugu Koumura, Kazuyoshi Hirabayashi, Hirohito Kenmochi, Hisashige Terao, Yoshio Mori
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Patent number: 4148790Abstract: A dye, which is suitable for dyeing cellulosic fiber materials, of the formula, ##STR1## wherein R and R' are each hydrogen, a C.sub.1 -C.sub.4 alkyl, or C.sub.1 -C.sub.4 hydroxyalkyl, m is an integer of 1 to 6, n and n' are each an integer of 2 to 4, and when m is 2 or more, n may be the same or different integer between 2 and 4, X is hydrogen or a group of the formula ##STR2## (wherein Q is a dye residue, R.sub.1 is hydrogen or a C.sub.1 -C.sub.4 alkyl and R.sub.2 is halogen); Y is hydrogen or a group of the formula ##STR3## 1 (wherein Q' is a dye residue, and when m is 2 or more, Q's may be the same or different, R.sub.1 ' is hydrogen or a C.sub.1 -C.sub.4 alkyl and R.sub.2 ' is halogen); Z is hydrogen or a group of the formula ##STR4## 5 (wherein Q" is a dye residue, R.sub.1 " is hydrogen or a C.sub.1 -C.sub.4 alkyl and R.sub.2 " is halogen, Q, Q' and Q" may independently be the same or different and X, Y and Z are not hydrogen at the same time).Type: GrantFiled: April 18, 1977Date of Patent: April 10, 1979Assignee: Sumitomo Chemical Company LimitedInventors: Yoshihisa Sueda, Suketsugu Koumura, Kazuyoshi Hirabayashi, Hirohito Kenmochi, Hisashige Terao, Yoshio Mori
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Patent number: 4038267Abstract: A dye, which is suitable for dyeing cellulosic fiber materials, of the formula, ##STR1## wherein R and R' are each hydrogen, a C.sub.1 - C.sub.4 alkyl, or C.sub.1 - C.sub.4 hydroxyalkyl, m is an integer of 1 to 6, n and n' are each an integer of 2 to 4, and when m is 2 or more, n may be the same or different integer between 2 and 4, X is hydrogen or a group of the formula ##STR2## (wherein Q is a dye residue, R.sub.1 is hydrogen or a C.sub.1 - C.sub.4 alkyl and R.sub.2 is halogen); Y is hydrogen or a group of the formula ##STR3## (wherein Q' is a dye residue, and when m is 2 or more, Q's may be the same or different, R.sub.1 ' is hydrogen or a C.sub.1 - C.sub.4 alkyl and R.sub.2 ' is halogen); Z is hydrogen or a group of the formula ##STR4## (wherein Q" is a dye residue, R.sub.1 " is hydrogen or a C.sub.1 - C.sub.4 alkyl and R.sub.2 " is halogen, Q, Q' and Q" may independently be the same or different and X, Y and Z are not hydrogen at the same time).Type: GrantFiled: May 21, 1974Date of Patent: July 26, 1977Assignee: Sumitomo Chemical Company, LimitedInventors: Yoshihisa Sueda, Suketsugu Koumura, Kazuyoshi Hirabayashi, Hirohito Kenmochi, Hisashige Terao, Yoshio Mori