Patents by Inventor Yasuo Kamuro
Yasuo Kamuro 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: 6271176Abstract: The present invention provides plant growth promoters each comprising, as an active ingredient, a jasmonic acid derivative represented by the following formula: wherein R1 represents a pentyl group or a pentenyl group and R2 represents a hydrogen atom or an alkyl group. These promoters exhibit excellent growth promotion effects particularly on root vegetables, potatoes (tuber crops), cereals, fruit vegetables, fruit trees, flowers and ornamental plants and industrial crops.Type: GrantFiled: February 22, 2000Date of Patent: August 7, 2001Assignee: Nippon Zeon Co Ltd.Inventors: Yasuo Kamuro, Shinichi Hirakawa, Hiroshi Fujisawa
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Patent number: 6114284Abstract: A plant growth regulator comprising as the active ingredients gibberellin and a jasmonic acid ester represented by the following formula (1): ##STR1## wherein R.sup.1 and R.sup.2 represent hydrocarbon groups. Gibberellin and the jasmonic acid ester are applied as a mixture, or as single agents each containing one of the two compounds, which are applied concurrently, or separately by a procedure wherein, while the earlier applied one is still in force, the other is applied.Type: GrantFiled: February 25, 1999Date of Patent: September 5, 2000Assignee: Nippon Zeon Co., Ltd.Inventors: Hiroshi Fujisawa, Nada Morishige, Yasuo Kamuro
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Patent number: 6100219Abstract: The present invention provides a plant growth promoter comprising an epoxycylohexane derivative represented by the general formula: ##STR1## (wherein by R.sup.1 represents a hydrogen atom, C1 to C6 alkyl group or C3 to C6 cycloalkyl group, and R.sup.2 and R.sup.3 are independently lower alkyl groups or are combined to form a polymethylene group which may be substituted with an alkyl group) and gibberellin as active ingredients.Type: GrantFiled: November 30, 1998Date of Patent: August 8, 2000Assignees: Sagami Chemical Research Center, Tama Biochemical Co., Ltd., Bal Planning Co., Ltd.Inventors: Kunikazu Sakai, Yasuo Kamuro, Hiroki Kuriyama
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Patent number: 6093683Abstract: The present invention provides plant growth promoters each comprising, as an active ingredient, a jasmonic acid derivative represented by the following formula: ##STR1## wherein R.sup.1 represents a pentyl group or a pentenyl group and R.sup.2 represents a hydrogen atom or an alkyl group. These promoters exhibit excellent growth promotion effects particularly on root vegetables, potatoes (tuber crops), cereals, fruit vegetables, fruit trees, flowers and ornamental plants and industrial crops.Type: GrantFiled: November 21, 1997Date of Patent: July 25, 2000Assignee: Nippon Zeon Co LtdInventors: Yasuo Kamuro, Shinichi Hirakawa, Hiroshi Fujisawa
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Patent number: 5965488Abstract: The present invention relates to a plant growth regulator comprising as an active ingredient an epoxycyclohexane derivative represented by general formula (1): ##STR1## wherein R.sup.1 is a hydrogen atom, a C.sub.1 -C.sub.6 alkyl group or C.sub.3 -C.sub.6 cycloalkyl group, and R.sup.2 and R.sup.3 are independently C.sub.1 -C.sub.6 alkyl groups or are combined to form a C.sub.2 -C.sub.3 polymethylene group which may be substituted with a C.sub.1 -C.sub.6 alkyl group, as well as to a plant growth regulator comprising the epoxycyclohexane derivative and a brassinosteroid as active ingredients. The epoxycyclohexane derivatives exhibit a potent plant growth regulating action which is equivalent to or higher than that of abscisic acid, and are useful as plant growth regulators such as a plant growth accelerator, a germination growth accelerator, a transpiration and wilting inhibitor, a cold resistance enhancer, an accelerator for growing, thickening or maturing fruits, roots, stems or bulbs, etc.Type: GrantFiled: April 24, 1998Date of Patent: October 12, 1999Assignees: Sagami Chemical Research Center, Tama Biochemical Co. Ltd., Bal Planning Co., Ltd.Inventors: Kunikazu Sakai, Yasuo Kamuro, Suguru Takatsuto, Tsuyoshi Watanabe, Hiroki Kuriyama
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Patent number: 5814581Abstract: A plant growth promoter comprising as the active ingredients (i) a jasmonic acid or jasmonate of the formula (1): ##STR1## wherein R.sup.1 is pentyl or pentenyl and R.sup.Type: GrantFiled: April 23, 1997Date of Patent: September 29, 1998Assignee: Nippon Zeon Co., Ltd.Inventors: Shin-ichi Hirakawa, Yasuo Kamuro, Suguru Takatsuto, Tsuyoshi Watanabe, Hiroki Kuriyama
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Patent number: 5801123Abstract: The present invention relates to a plant growth regulator comprising as an active ingredient an epoxycyclohexane derivative represented by general formula (1): ##STR1## wherein R.sup.1 is a hydrogen atom, a C.sub.1 -C.sub.6, alkyl group or C.sub.3 -C.sub.6 cycloalkyl group, and R.sup.2 and R.sup.3 are independently C.sub.1 -C.sub.6 alkyl groups or are combined to form a C.sub.2 -C.sub.3 polymethylene group which may be substituted with a C.sub.1 -C.sub.6, alkyl group, as well as to a plant growth regulator comprising the epoxycyclohexane derivative and a brassinosteroid as active ingredients. The epoxycyclohexane derivatives exhibit a potent plant growth regulating action which is equivalent to or higher than that of abscisic acid, and are useful as plant growth regulators such as a plant growth accelerator, a germination growth accelerator, a transpiration and wilting inhibitor, a cold resistance enhancer, an accelerator for growing, thickening or maturing fruits, roots, stems or bulbs, etc..Type: GrantFiled: March 13, 1997Date of Patent: September 1, 1998Assignees: Sagami Chemical Research Center, Tama Biochemical Co. Ltd., Bal Planning Co., Ltd.Inventors: Kunikazu Sakai, Yasuo Kamuro, Suguru Takatsuto, Tsuyoshi Watanabe, Hiroki Kuriyama
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Patent number: 5776860Abstract: The present invention provides plant growth promoters each comprising, as an active ingredient, a jasmonic acid derivative represented by the following formula: ##STR1## wherein R.sup.1 represents a pentyl group or a pentenyl group and R.sup.2 represents a hydrogen atom or an alkyl group. These promoters exhibit excellent growth promotion effects particularly on root vegetables, potatoes (tuber crops), cereals, fruit vegetables, fruit trees, flowers and ornamental plants and industrial crops.Type: GrantFiled: August 25, 1995Date of Patent: July 7, 1998Assignee: Nippon Zeon Co., Ltd.Inventors: Yasuo Kamuro, Shinichi Hirakawa, Hiroshi Fujisawa
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Patent number: 5763366Abstract: Brassinosteroid derivatives expressed in formula (I) and formula (II) ##STR1## and a plant growth regulator containing one type or two types of these brassinosteroid derivatives as active ingredient.The invention thereby presents novel brassinosteroid analogous compounds expressed in formula (I) and formula (II) and a plant growth regulator containing these compounds showing a persisting plant growth regulating action.Type: GrantFiled: November 29, 1995Date of Patent: June 9, 1998Assignee: TAMA Biochemical Co. Ltd.Inventors: Suguru Takatsuto, Yasuo Kamuro, Tsuyoshi Watanabe, Hiroki Kuriyama
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Patent number: 5173106Abstract: A composition for inhibiting flowering of plants and a composition for prolonging the duration of flowering are disclosed. The compositions of the present invention comprise S-(+)-abscisic acid as an effective ingredient.Type: GrantFiled: June 24, 1991Date of Patent: December 22, 1992Inventors: Yasuo Kamuro, Shingo Marumo
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Patent number: 5002602Abstract: This invention relates to a herbicidal composition comprising fosmidomycin or salt thereof in combination with the other herbicide selected from the group of ametryn or salt thereof or diuron, and to a method of killing weeds by applying to weed seedlings the said combination.Type: GrantFiled: May 9, 1989Date of Patent: March 26, 1991Assignee: Fujisawa Pharmaceutical Co., Ltd.Inventors: Yasuo Kamuro, Tadahide Kawai, Toshihito Kakiuchi
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Patent number: 4959093Abstract: This invention relates to (22R,23R,24S)-22,23-epoxy2.alpha.3.alpha.-isopropylidenedioxy-B-homo-7-oxa -5.alpha.-stigmastan-6-one which is of value as a plant growth regulator, a process for preparation thereof and a plant growth regulating composition containing the same.Type: GrantFiled: December 22, 1988Date of Patent: September 25, 1990Assignee: Fujisawa Pharmaceutical Co., Ltd.Inventors: Yasuo Kamuro, Toshihito Kakiuchi, Suguru Takatsudo
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Patent number: 4957537Abstract: The present invention discloses a new plant growth regulating composition which comprises, as an active ingredient, a selected succinamide compounds, maleimide compounds, succinic anhydride compounds, maleic anhydride compounds of general formula: ##STR1## if preferably, along with ethephon. In this invention, the plant growth regulating composition has the effect of plant growth controlling activity (herbicidal activity) and an abscission layer forming activity for a fruit harvest aid, and the said plant growth regulating composition does not cause hazards such as defoliation and injuries to the fruit surface, nor does it affect immature fruit, but acts specifically on matured fruit and promptes formation of abscission layer that aids in the separation of matured fruit.Type: GrantFiled: March 22, 1988Date of Patent: September 18, 1990Assignees: Fujisawa Pharmaceutical Company, Ltd, Nissan Chemical Industries, Ltd.Inventors: Tsutomu Teraji, Atsushi Yamamura, Yasuo Kamuro, Koichi Hirai, Seiichi Fujii
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Patent number: 4846872Abstract: This invention relates to a herbicidal composition comprising fosmidomycin or salt thereof in combination with the other herbicide selected from the group of ametryn or salt thereof or diuron, and to a method of killing weeds by applying to weed seedlings the said combination.Type: GrantFiled: August 5, 1987Date of Patent: July 11, 1989Assignee: Fujisawa Pharmaceutical Co., Ltd.Inventors: Yasuo Kamuro, Tadahide Kawai, Toshihito Kakiuchi
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Patent number: 4751226Abstract: The invention relates to plant growth regulating compounds which are pyrazoloisoquinoline derivatives.Type: GrantFiled: August 28, 1986Date of Patent: June 14, 1988Assignee: Fujisawa Pharmaceutical Co., Ltd.Inventors: Yasuo Kamuro, Eiji Taniguchi, Katsuji Watanabe
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Patent number: 4619685Abstract: A plant growth regulator comprising, as the active substance, one or more of N-substituted alanine derivatives of the general formula: ##STR1## wherein X represents halogen atom or trifluoromethyl, R represents hydrogen, straight chain or branched chain alkyl having 1-4 carbon atoms, alkenyl having 2-4 carbon atoms, an alkali metal atom or amine-forming residue, and n is zero or an integer of 1 or 2, with the proviso that when n is 2, X may be same or different, together with an inert carrier or diluent, in particular, an agent effective for controlling suckers of tobacco, and a process for regulating plant growth by using said plant growth regulator.Type: GrantFiled: November 15, 1984Date of Patent: October 28, 1986Assignee: Nissan Chemical Industries, Ltd.Inventors: Yasuo Kamuro, Koichi Hirai, Fumio Suzuki, Susumu Yamamoto, Noboru Shindo
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Patent number: 4152429Abstract: Synergistic ethephon (2-chloroethylphosphonic acid) plus fungicide compositions applied to plants produce enhanced fungicidal activity and enhanced plant growth regulant activity.Type: GrantFiled: March 17, 1976Date of Patent: May 1, 1979Assignee: Amchem Products, Inc.Inventors: Mitsuru Hayakawa, Mamoru Hayashi, Yasuo Kamuro
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Patent number: 4008070Abstract: Method for thinning young fruits and blossoms by applying to fruit trees, particularly citrus fruit trees an indazole compound of the formula: ##STR1## wherein R is hydrogen or a lower alkyl having 1 to 4 carbon atoms, and X is a halogen, or the salt thereof, and a thinning agent containing as the active ingredient the indazole compound as mentioned above.Type: GrantFiled: April 29, 1975Date of Patent: February 15, 1977Assignees: Nissan Chemical Industries Co., Ltd., Fujisawa Pharmaceutical Co., Ltd.Inventors: Takashi Iwata, Kazuo Nakanishi, Minoru Nagao, Seiichi Ishida, Yasuo Kamuro