Patents by Inventor Yasushi Wada

Yasushi Wada 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: 9868912
    Abstract: A method for producing a lubricating base oil, comprising: performing a 13C-NMR analysis regarding an oil to be treated and selecting the oil based on a value for dividing an integrated value of a peak for a tertiary carbon atom by an integrated value of all peaks at 0 to 50 ppm, a value for dividing an integrated value of a peak for a carbon atom constituting a main chain by the integrated value of all peaks at 0 to 50 ppm, and a value for dividing an integrated value of a peak for a branched CH3 bonded to a fifth or the following carbon atom from a terminal carbon atom in the main chain by an integrated value of all peaks at 10 to 25 ppm, and obtaining a dewaxed oil by isomerization dewaxing of the oil selected in the first step, is disclosed.
    Type: Grant
    Filed: March 26, 2014
    Date of Patent: January 16, 2018
    Assignee: JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Kazuaki Hayasaka, Yasushi Wada, Marie Iwama, Koshi Takahama
  • Publication number: 20160053187
    Abstract: A method for producing a lubricating base oil, comprising: performing a 13C-NMR analysis regarding an oil to be treated and selecting the oil based on a value for dividing an integrated value of a peak for a tertiary carbon atom by an integrated value of all peaks at 0 to 50 ppm, a value for dividing an integrated value of a peak for a carbon atom constituting a main chain by the integrated value of all peaks at 0 to 50 ppm, and a value for dividing an integrated value of a peak for a branched CH3 bonded to a fifth or the following carbon atom from a terminal carbon atom in the main chain by an integrated value of all peaks at 10 to 25 ppm, and a obtaining a dewaxed oil by isomerization dewaxing of the oil selected in the first step, is disclosed.
    Type: Application
    Filed: March 26, 2014
    Publication date: February 25, 2016
    Applicant: JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Kazuaki HAYASAKA, Yasushi WADA, Marie IWAMA, Koshi TAKAHAMA
  • Patent number: 9011041
    Abstract: A subirrigation system 10 includes a water-impervious member 16, and keeps water content in soil of a cultivated land 200 in a proper state for growing a plant. The water-impervious member 16 is formed into an upper opening vessel shape, and has a water reserving function. Water is fed to an inner portion of the water-impervious member 16 from a water tank 12 via a feed water pipe 14, whereby a soil portion 26 in a gravitational water state is formed. A water level 28 of the gravitational water within the water-impervious member 16 is properly controlled to a desired water level by a water level controller 18 provided in the feed water pipe 14. The gravitational water within the water-impervious member 16 controlled to the desired water level is appropriately sucked up to the soil in an upper layer in accordance with a capillary phenomenon. Accordingly, a soil portion 30 in a capillary water state having proper water content is formed in the cultivated land 200.
    Type: Grant
    Filed: August 25, 2008
    Date of Patent: April 21, 2015
    Assignees: Kubota-C.I. Co., Ltd., Paddy Research Co., Ltd.
    Inventors: Naoki Ono, Hiroaki Sakamoto, Kazuhiro Hirao, Toshinobu Kakita, Yasushi Wada, Yoshihito Fujii, Tsuneo Onodera
  • Publication number: 20100296870
    Abstract: A subirrigation system 10 includes a water-impervious member 16, and keeps water content in soil of a cultivated land 200 in a proper state for growing a plant. The water-impervious member 16 is formed into an upper opening vessel shape, and has a water reserving function. Water is fed to an inner portion of the water-impervious member 16 from a water tank 12 via a feed water pipe 14, whereby a soil portion 26 in a gravitational water state is formed. A water level 28 of the gravitational water within the water-impervious member 16 is properly controlled to a desired water level by a water level controller 18 provided in the feed water pipe 14. The gravitational water within the water-impervious member 16 controlled to the desired water level is appropriately sucked up to the soil in an upper layer in accordance with a capillary phenomenon. Accordingly, a soil portion 30 in a capillary water state having proper water content is formed in the cultivated land 200.
    Type: Application
    Filed: August 25, 2008
    Publication date: November 25, 2010
    Applicants: KUBOTA-C.I. CO., LTD., PADDY RESEARCH CO., LTD.
    Inventors: Naoki Ono, Hiroaki Sakamoto, Kazuhiro Hirao, Toshinobu Kakita, Yasushi Wada, Yoshihito Fujii, Tsuneo Onodera
  • Patent number: 7423009
    Abstract: The present invention relates to a composition for prevention and treatment of kidney diseases comprising one or more effective component(s) of a PAR-2 activating agent which is able to activate PAR-2 and a pharmaceutically acceptable carrier. The present invention further relates to a method for prevention and treatment of kidney diseases comprising administration of a composition for prevention and treatment of kidney diseases containing a PAR-2 activating agent which is able to activate PAR-2 to patients suffering from kidney diseases, and also relates to the use of a PAR-2 activating agent which is able to activate PAR-2 for the manufacture of a composition for prevention and treatment of kidney diseases. The present invention furthermore relates to a method for screening an effective ingredient for prevention and treatment of kidney diseases comprising screening of the activating action of the test substance to PAR-2.
    Type: Grant
    Filed: September 30, 2003
    Date of Patent: September 9, 2008
    Assignee: Kowa Company, Ltd.
    Inventors: Takashi Nakagawa, Hiroyuki Ishiwata, Toshiaki Takizawa, Toru Kanke, Yasushi Wada, Junichi Kawagoe
  • Publication number: 20060183664
    Abstract: The present invention provides a pharmaceutical composition by a novel action mechanism without serious side effects for delayed hypersensitivity and a screening method of the same. The invention also provides a novel assay method of inhibitors/suppressive agents of PAR-2. The invention relates to a pharmaceutical composition for delayed hypersensitivity containing one or two or more active ingredients selected from the group consisting of inhibitors of PAR-2 and suppressive agents of PAR-2 gene expression and a pharmaceutically acceptable carrier, and to a method for screening active ingredients for pharmaceutical composition for delayed hypersensitivity by contacting a subject substance with cells expressing PAR-2 and by determining expression or activity of PAR-2. The invention also relates to a method for detecting or quantifying actions of the subject substance for PAR-2 using cells expressing PAR-2 in a culture containing inositol.
    Type: Application
    Filed: December 13, 2002
    Publication date: August 17, 2006
    Inventors: Toshiaki Takizawa, Masaki Tamiya, Naohiro Saito, Toru Kanke, Jiro Matsumoto, Yasushi Wada, Junichi Kawagoe, William Ferrell, John Lockhart
  • Patent number: 6834376
    Abstract: A logic optimization device refers to hierarchical circuit-design descriptions representing multiple layers of an integrated circuit, and decides whether or not each output terminal at each lower layer is connected with its upper layer. If an output terminal at a lower layer has been decided to be unconnected with its upper layer, the logic optimization device deletes from the hierarchical circuit-design descriptions an information part describing the output terminal, and deletes from the hierarchical circuit-design descriptions an information part describing an element at the lower layer connected with the deleted output terminal, thereby producing a gate-level net-list of an integrated circuit without ineffectual elements.
    Type: Grant
    Filed: August 7, 2002
    Date of Patent: December 21, 2004
    Assignee: Renesas Technology Corp.
    Inventor: Yasushi Wada
  • Publication number: 20040132635
    Abstract: The present invention relates to a composition for prevention and treatment of kidney diseases comprising one or more effective component(s) of a PAR-2 activating agent which is able to activate PAR-2 and a pharmaceutically acceptable carrier. The present invention further relates to a method for prevention and treatment of kidney diseases comprising administration of a composition for prevention and treatment of kidney diseases containing a PAR-2 activating agent which is able to activate PAR-2 to patients suffering from kidney diseases, and also relates to the use of a PAR-2 activating agent which is able to activate PAR-2 for the manufacture of a composition for prevention and treatment of kidney diseases. The present invention furthermore relates to a method for screening an effective ingredient for prevention and treatment of kidney diseases comprising screening of the activating action of the test substance to PAR-2.
    Type: Application
    Filed: September 30, 2003
    Publication date: July 8, 2004
    Applicant: KOWA COMPANY, LTD.
    Inventors: Takashi Nakagawa, Hiroyuki Ishiwata, Toshiaki Takizawa, Toru Kanke, Yasushi Wada, Junichi Kawagoe
  • Patent number: 6720811
    Abstract: A semiconductor device includes a delay amount measuring unit, multiple delay sections and a correction signal generating unit. The delay amount measuring unit for measures an actual delay amount corresponding to a specified delay amount by supplying a clock signal with a known period to multiple 1-ns-delay strings with a preassigned delay amount, and by detecting phase variations of the clock signal by the 1-ns-delay strings. The delay sections includes a delay string capable of freely adjusting a connection number of its delay elements. The correction signal generating unit generates a correction signal for enabling each of the delay sections to correct the connection number of the delay strings such that each delay section has a desired delay amount, in accordance with the actual delay amount corresponding to the specified delay amount and measured by the delay measuring unit.
    Type: Grant
    Filed: July 12, 2002
    Date of Patent: April 13, 2004
    Assignee: Renesas Technology Corp.
    Inventors: Minobu Yazawa, Shinichi Nakagawa, Yasushi Wada
  • Publication number: 20030137330
    Abstract: A semiconductor device includes a delay amount measuring unit, multiple delay sections and a correction signal generating unit. The delay amount measuring unit for measures an actual delay amount corresponding to a specified delay amount by supplying a clock signal with a known period to multiple 1-ns-delay strings with a preassigned delay amount, and by detecting phase variations of the clock signal by the 1-ns-delay strings. The delay sections includes a delay string capable of freely adjusting a connection number of its delay elements. The correction signal generating unit generates a correction signal for enabling each of the delay sections to correct the connection number of the delay strings such that each delay section has a desired delay amount, in accordance with the actual delay amount corresponding to the specified delay amount and measured by the delay measuring unit.
    Type: Application
    Filed: July 12, 2002
    Publication date: July 24, 2003
    Inventors: Minobu Yazawa, Shinichi Nakagawa, Yasushi Wada
  • Publication number: 20030061578
    Abstract: A logic optimization device refers to hierarchical circuit-design descriptions representing multiple layers of an integrated circuit, and decides whether or not each output terminal at each lower layer is connected with its upper layer. If an output terminal at a lower layer has been decided to be unconnected with its upper layer, the logic optimization device deletes from the hierarchical circuit-design descriptions an information part describing the output terminal, and deletes from the hierarchical circuit-design descriptions an information part describing an element at the lower layer connected with the deleted output terminal, thereby producing a gate-level net-list of an integrated circuit without ineffectual elements.
    Type: Application
    Filed: August 7, 2002
    Publication date: March 27, 2003
    Inventor: Yasushi Wada
  • Patent number: 6490710
    Abstract: After a logic verification is made in a low-hierarchical block, a logic verification is made in a high-hierarchical block circuit in a state that the low-hierarchical block is not the subject of comparison. Even if the number of input ports in the low-hierarchical block increases due to a change of the circuit, logical equivalence of the high-hierarchical circuit is verified by using equivalence information of the input ports.
    Type: Grant
    Filed: August 1, 2000
    Date of Patent: December 3, 2002
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Yasushi Wada
  • Patent number: 6453449
    Abstract: There is described a means of shortening of the time required for verification by a formal logic verification system which compares details of a circuit represented in the form of a register transfer level (RTL) description with details of the circuit represented in the form of a gate level netlist. Logical equivalence between an RTL description and a gate level netlist obtained through logical compilation of the RTL descriptions is verified. In a case where a plurality of blocks having the same function are included in the circuit, one of a plurality of descriptions that are included in the netlist and relate to the function is compared with the RTL description relating to the functional blocks (comparison {circle around (1)}). If one of the descriptions of the netlist has already been verified, a plurality of descriptions included in the netlist are compared with the description that is taken as the first reference description.
    Type: Grant
    Filed: July 26, 1999
    Date of Patent: September 17, 2002
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Yasushi Wada
  • Patent number: 6311203
    Abstract: A multiplication device for performing a multiplication operation on a multiplicand X and two fixed coefficients C1 and C2 where C1>C2. The multiplication device comprises a multiplier for multiplying multiplicand X and the average CA of the two fixed coefficients C1 and C2; a shift register for obtaining a sum of the multiplicand X data after being shifted up according to a position of a “1” bit in bit data where the bit data is the remainder coefficient obtained by subtracting average CA from fixed coefficient C1; and a selector for selecting a product obtained for one of the fixed coefficients C1 and C2. When the fixed coefficient C1 is selected, the selector outputs the sum of the product returned by the multiplier and the accumulated value obtained by the shift register; when fixed coefficient C2 is selected, the selector outputs the difference of the product returned by the multiplier minus the accumulated value obtained by the shift register.
    Type: Grant
    Filed: December 2, 1998
    Date of Patent: October 30, 2001
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Yasushi Wada, Shuji Murakami
  • Patent number: 6136848
    Abstract: This invention relates to a flavone derivative represented by the formula (1) or a salt thereof, and also to a medicine containing the same. ##STR1## wherein A represents H, halogen, phenyl, naphthyl, a group of the formula (2) in which X is H or halogen, B is --CH.dbd.CH--, --CH.dbd.N--, --N(R.sup.7)-- (R.sup.7 : lower alkyl or alkoxyalkyl), --O-- or --S--; W represents a single bond, --CH.sub.2 O-- or --CH.dbd.CH--; at least one of R.sup.1 to R.sup.4 represents --COOH, --CN, alkyloxycarbonyl, tetrazolyl or --CONHR.sup.8 (R.sup.8 : H, lower alkyl or phenylsulfonyl), the remainder thereof individually represent H, halogen, --OH, lower alkyl or lower alkoxyl; R.sup.5 represents H, --OH, lower alkoxyl, --O(CH.sub.2).sub.m NR.sup.9 R.sup.10 (R.sup.9,R.sup.10 : H or lower alkyl, or coupled together with the adjacent N to form a phthalimido group; m: 1-5), or a group of the formula (3) (n: 1-5, l: 2-3; and R.sup.6 represents H, halogen, lower alkyl or lower alkoxyl.
    Type: Grant
    Filed: October 2, 1997
    Date of Patent: October 24, 2000
    Assignee: Kowa Co., Ltd.
    Inventors: Maria Elizabeth Zwaagstra, Mingqiang Zhang, Henk Timmerman, Masahiro Tamura, Yasushi Wada
  • Patent number: 6127360
    Abstract: This invention relates to a diamine derivative represented by the following formula (1) or a salt thereof. wherein R.sup.1 represents H, OH, an aralkyloxy group or a halogen atom; R.sup.2 represents H or a lower alkyl group; A represents --C(R.sup.3).dbd.CH--, --CH.dbd.N--, --N(R.sup.4)--, R.sup.3 being H or OH, R.sup.4 being a lower alkyl group or an alkoxyalkyl group, --O--, or --S--; B represents a single bond, --C(R.sup.5)(R.sup.6)--(CH.sub.2).sub.k --, R.sup.5 and R.sup.6 being H or a lower alkyl group, and k being a value of from 0 to 2, --S(O).sub.q CH(R.sup.7), or --CH.dbd.CH--; E represents a single bond or --(CH.sub.2).sub.3 --; W and Y individually represent --CH.sub.2 -- or --CO--; Z represents O or S; and m is a value of 2 or 3, and n is a value of from 1 to 4; with the proviso that E is --(CH.sub.2).sub.3 -- when B is a single bond and E is a single bond when B is a group other than a single bond.
    Type: Grant
    Filed: March 5, 1999
    Date of Patent: October 3, 2000
    Assignee: Kowa Co., Ltd.
    Inventors: Henk Timmerman, Minggiang Zang, Kazuhiro Onogi, Masahiro Tamura, Tsutomu Tohma, Yasushi Wada
  • Patent number: 6121286
    Abstract: The present invention is directed to a tetrazole derivative represented by the following formula (1) or a salt thereof: ##STR1## wherein R.sup.1 and R.sup.2 independently represent a hydrogen atom, a hydroxyl group, a lower alkyl group, a substituted or unsubstituted alkoxy group, or a substituted or unsubstituted alkanoyloxy group; R.sup.3 represents a hydrogen atom or a substituted or unsubstituted lower alkyl group; A represents a methyleneoxy group or a vinylene group; B represents a substituted or unsubstituted quinolyl group, a substituted or unsubstituted quinazolyl group, or a substituted or unsubstituted benzimidazolyl group; and a broken line indicates that there may be a double bond; and to a medicine containing the compound as an active ingredient. The medicine according to the present invention is endowed with excellent antileukotriene activity and antihistaminic activity, and is useful for the prevention and treatment of, for example, asthma.
    Type: Grant
    Filed: September 23, 1998
    Date of Patent: September 19, 2000
    Assignee: Kowa Co., Ltd.
    Inventors: Hendrik Timmerman, Mingqiang Zang, Kazuhiro Onogi, Takeo Deushi, Masahiro Tamura, Tsutomu Tohma, Yasushi Wada, Jiro Matsumoto, Toru Kanke
  • Patent number: 6117886
    Abstract: The present invention is directed to a tetrazole derivative represented by the following formula (1) or a salt thereof: ##STR1## wherein R.sup.1 and R.sup.2 independently represent a hydrogen atom, a hydroxyl group, a lower alkyl group, a substituted or unsubstituted alkoxy group, or a substituted or unsubstituted alkanoyloxy group; R.sup.3 represents a hydrogen atom or a substituted or unsubstituted lower alkyl group; A represents a methyleneoxy group or a vinylene group; Z represents a substituted or unsubstituted benzimidazolyl group; and a broken line indicates that there may be a double bond; and to a medicine containing the compound as an active ingredient. The medicine according to the present invention is endowed with excellent antileukotriene activity and antihistaminic activity, and is useful for the prevention and treatment of, for example, asthma.
    Type: Grant
    Filed: July 19, 1999
    Date of Patent: September 12, 2000
    Assignee: Kowa Co., Ltd.
    Inventors: Hendrik Timmerman, Mingqiang Zang, Kazuhiro Onogi, Takeo Deushi, Masahiro Tamura, Tsutomu Tohma, Yasushi Wada, Jiro Matsumoto, Toru Kanke
  • Patent number: 6107308
    Abstract: The present invention is directed to a piperidine derivative represented by the following formula (1) or a salt thereof: ##STR1## wherein R.sup.1, R.sup.2, and R.sup.3 individually represent hydrogen atoms, etc., Y represents ##STR2## B represents a single bond, an alkylene group, --S--CH.sub.2 --, or --CH.dbd.CH--, E represents a single bond or a trimethylene group, Z represents an oxygen atom, etc., and n represents a number between 2 and 5 inclusive; and to a medicine containing the compound. The medicine according to the present invention is endowed with excellent anti-histaminic activity and antileukotriene activity, and exhibits reduced side effects such as drowsiness.
    Type: Grant
    Filed: September 23, 1998
    Date of Patent: August 22, 2000
    Assignee: Kowa Co., Ltd.
    Inventors: Hendrik Timmerman, Mingqiang Zang, Kazuhiro Onogi, Yoshio Takahashi, Masahiro Tamura, Tsutomu Tohma, Yasushi Wada, Jiro Matsumoto, Toru Kanke
  • Patent number: 6046212
    Abstract: This invention relates to chalcone derivatives represented by the following formula (1): wherein A represents a phenyl group, a quinolyl group or the like, W represents a vinylene group or the like, and R.sup.1 to R.sup.5 each independently represent a carboxyl, cyano, alkyloxycarbonyl or like group, or salts of the chalcone derivatives, and also to drugs containing them as effective ingredients. These compounds have excellent cys-LT receptor antagonism, and are useful as antiallergic agents or the like.
    Type: Grant
    Filed: November 17, 1998
    Date of Patent: April 4, 2000
    Assignee: Kowa Co., Ltd.
    Inventors: Maria Elizabeth Zwaagstra, Mingqiang Zhang, Henk Timmerman, Kazuhiro Onogi, Masahiro Tamura, Tsutomu Toma, Yasushi Wada