Patents by Inventor Daisuke Oka
Daisuke Oka 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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Publication number: 20160340314Abstract: The present invention provides a compound represented by the formula (I) wherein X is a hydrogen atom or a fluorine atom; R is a hydrogen atom or alkyl; R1 is (1) cyclopropyl optionally substituted by 1 to 3 halogen atoms or (2) phenyl optionally substituted by 1 to 3 halogen atoms; R2 is alkyl, alkoxy, haloalkoxy, a halogen atom, cyano, etc.; and R3 is 7-oxo-7,8-dihydro-1,8-naphthyridinyl, 3-pyridyl, etc., or a salt thereof. The compound of the present invention has excellent antimicrobial activity against Clostridium difficile and is useful for the prevention or treatment of intestinal infection such as Clostridium difficile-associated diarrhea.Type: ApplicationFiled: August 1, 2016Publication date: November 24, 2016Inventors: Mamuti ABUDUSAIMI, Fangguo YE, Jiangqin SUN, Hisashi MIYAMOTO, Jay-Fei CHENG, Daisuke OKA
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Patent number: 9440951Abstract: The present invention provides a compound represented by the formula (I) wherein X is a hydrogen atom or a fluorine atom; R is a hydrogen atom or alkyl; R1 is (1) cyclopropyl optionally substituted by 1 to 3 halogen atoms or (2) phenyl optionally substituted by 1 to 3 halogen atoms; R2 is alkyl, alkoxy, haloalkoxy, a halogen atom, cyano, etc.; and R3 is 7-oxo-7,8-dihydro-1,8-naphthyridinyl, 3-pyridyl, etc., or a salt thereof. The compound of the present invention has excellent antimicrobial activity against Clostridium difficile and is useful for the prevention or treatment of intestinal infection such as Clostridium difficile-associated diarrhea.Type: GrantFiled: May 11, 2015Date of Patent: September 13, 2016Assignee: OTSUKA PHARMACEUTICAL CO., LTDInventors: Mamuti Abudusaimi, Fangguo Ye, Jiangqin Sun, Hisashi Miyamoto, Jay-Fei Cheng, Daisuke Oka
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Publication number: 20150239865Abstract: The present invention provides a compound represented by the formula (I) wherein X is a hydrogen atom or a fluorine atom; R is a hydrogen atom or alkyl; R1 is (1) cyclopropyl optionally substituted by 1 to 3 halogen atoms or (2) phenyl optionally substituted by 1 to 3 halogen atoms; R2 is alkyl, alkoxy, haloalkoxy, a halogen atom, cyano, etc.; and R3 is 7-oxo-7,8-dihydro-1,8-naphthyridinyl, 3-pyridyl, etc., or a salt thereof. The compound of the present invention has excellent antimicrobial activity against Clostridium difficile and is useful for the prevention or treatment of intestinal infection such as Clostridium difficile-associated diarrhea.Type: ApplicationFiled: May 11, 2015Publication date: August 27, 2015Inventors: Mamuti Abudusaimi, Fangguo Ye, Jiangqin Sun, Hisashi Miyamoto, Jay-Fei Cheng, Daisuke Oka
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Patent number: 9067887Abstract: The present invention provides a compound represented by the formula (I) wherein X is a hydrogen atom or a fluorine atom; R is a hydrogen atom or alkyl; R1 is (1) cyclopropyl optionally substituted by 1 to 3 halogen atoms or (2) phenyl optionally substituted by 1 to 3 halogen atoms; R2 is alkyl, alkoxy, haloalkoxy, a halogen atom, cyano, etc.; and R3 is 7-oxo-7,8-dihydro-1,8-naphthyridinyl, 3-pyridyl, etc., or a salt thereof. The compound of the present invention has excellent antimicrobial activity against Clostridium difficile and is useful for the prevention or treatment of intestinal infection such as Clostridium difficile-associated diarrhea.Type: GrantFiled: February 28, 2014Date of Patent: June 30, 2015Assignee: OTSUKA PHARMACEUTICAL CO., LTDInventors: Mamuti Abudusaimi, Fangguo Ye, Jiangqin Sun, Hisashi Miyamoto, Jay-Fei Cheng, Daisuke Oka
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Publication number: 20150005287Abstract: The present invention provides a compound represented by the formula (I) wherein X is a hydrogen atom or a fluorine atom; R is a hydrogen atom or alkyl; R1 is (1) cyclopropyl optionally substituted by to 3 halogen atoms or (2) phenyl optionally substituted by 1 to 3 halogen atoms; R2 is alkyl, alkoxy, haloalkoxy, a halogen atom, cyano, etc.; and R3 is 7-oxo-7,8-dihydro-1,8-naphthyridinyl, 3-pyridyl, etc., or a salt thereof. The compound of the present invention has excellent antimicrobial activity against Clostridium difficile and is useful for the prevention or treatment of intestinal infection such as Clostridium difficile-associated diarrhea.Type: ApplicationFiled: February 28, 2014Publication date: January 1, 2015Inventors: Mamuti ABUDUSAIMI, Fangguo YE, Jiangqin SUN, Hisashi MIYAMOTO, Jay-Fei CHENG, Daisuke OKA
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Publication number: 20140179675Abstract: The present invention provides a compound represented by the formula (I) wherein X is a hydrogen atom or a fluorine atom; R is a hydrogen atom or alkyl; R1 is (1) cyclopropyl optionally substituted by 1 to 3 halogen atoms or (2) phenyl optionally substituted by 1 to 3 halogen atoms; R2 is alkyl, alkoxy, haloalkoxy, a halogen atom, cyano, etc.; and R3 is 7-oxo-7,8-dihydro-1,8-naphthyridinyl, 3-pyridyl, etc., or a salt thereof. The compound of the present invention has excellent antimicrobial activity against Clostridium difficile and is useful for the prevention or treatment of intestinal infection such as Clostridium difficile-associated diarrhea.Type: ApplicationFiled: February 28, 2014Publication date: June 26, 2014Applicant: OTSUKA PHARMACEUTICAL CO., LTD.Inventors: Mamuti ABUDUSAIMI, Fangguo YE, Jiangqin SUN, Hisashi MIYAMOTO, Jay-Fei CHENG, Daisuke OKA
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Patent number: 8652941Abstract: In one embodiment, a dielectric material layer embedding metal structures is ablated from the chip-containing substrate by laser grooving, which is performed on dicing channels of the chip-containing substrate. Subsequently, an underfill layer is formed over the dielectric material layer in a pattern that excludes the peripheral areas of the chip-containing substrate. The physically exposed dicing channels at the periphery can be employed to align a blade to dice the chip-containing substrate. In another embodiment, an underfill layer is formed prior to any laser grooving. Mechanical cutting of the underfill layer from above dicing channels is followed by laser ablation of the dicing channels and subsequent mechanical cutting to dice a chip-containing substrate.Type: GrantFiled: May 17, 2012Date of Patent: February 18, 2014Assignees: International Business Machines Corporation, Disco Corporation, Sumitomo Bakelite Company Ltd.Inventors: Richard F. Indyk, Jae-Woong Nah, Satoru Katsurayama, Daisuke Oka, Shigefumi Okada
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Publication number: 20130149841Abstract: In one embodiment, a dielectric material layer embedding metal structures is ablated from the chip-containing substrate by laser grooving, which is performed on dicing channels of the chip-containing substrate. Subsequently, an underfill layer is formed over the dielectric material layer in a pattern that excludes the peripheral areas of the chip-containing substrate. The physically exposed dicing channels at the periphery can be employed to align a blade to dice the chip-containing substrate. In another embodiment, an underfill layer is formed prior to any laser grooving. Mechanical cutting of the underfill layer from above dicing channels is followed by laser ablation of the dicing channels and subsequent mechanical cutting to dice a chip-containing substrate.Type: ApplicationFiled: May 17, 2012Publication date: June 13, 2013Applicants: INTERNATIONAL BUSINESS MACHINES CORPORATION, DISCO CORPORATION, SUMITOMO BAKELITE COMPANY LTD.Inventors: Richard F. Indyk, Jae-Woong Nah, Satoru Katsurayama, Daisuke Oka, Shigefumi Okada
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Publication number: 20130114962Abstract: The communication device is connected with a plurality of user-side devices via a splitter. The communication device includes a matching means for performing matching to determine whether each of a burst delimiter, positioned at a start position of frame data which is a synchronization target in a burst optical signal transmitted from each of the user-side devices, and sync pattern data, positioned from the beginning of the burst optical signal to the burst delimiter in the burst optical signal, matches a predetermined pattern. The communication device also includes a synchronization means for, if matching of the sync pattern data and matching of the burst delimiter by the matching means succeeded, performing synchronization of the frame data on the basis of the position of the burst delimiter in the burst optical signal. The matching means performs matching of the burst delimiter after successful matching of the sync pattern data.Type: ApplicationFiled: June 10, 2011Publication date: May 9, 2013Applicant: NEC CORPORATIONInventors: Daisuke Oka, Sadaichirou Oogushi, Taisuke Goto
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Publication number: 20110241227Abstract: The invention is aimed at providing a liquid resin composition capable of densely containing a filler and of filling up a narrow gap in a flip-chip-bonded semiconductor device, and a highly-reliable semiconductor device using the same. The liquid resin composition of the present invention contains (A) an epoxy resin; (B) an epoxy resin curing agent; and (C) a filler, wherein content of (C) the filler is 60% by weight or more and 80% by weight or less of the whole liquid resin composition, and contact angle (?) of the liquid resin composition, measured at 110° C. in accordance with JIS R3257, is 30° or smaller.Type: ApplicationFiled: December 17, 2009Publication date: October 6, 2011Inventor: Daisuke Oka
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Patent number: 8008410Abstract: There is provided an epoxy resin composition for encapsulating a semiconductor comprising an epoxy resin (A), wherein the epoxy resin (A) including: a crystalline epoxy resin (a1) having a melting point of 50° C. to 150° C., an epoxy resin (a2) represented by formula (1), and at least one epoxy resin (a3) selected from an epoxy resin represented by formula (2) and an epoxy resin represented by a formula (3): in which R1's, which may be the same or different, represent a hydrocarbon group having 1 to 4 carbon atoms; R2's, which may be the same or different, represent a hydrogen atom or a hydrocarbon group having 1 to 4 carbon atoms; m is an integer of 0 to 5; and n is an integer of 0 to 6.Type: GrantFiled: October 31, 2007Date of Patent: August 30, 2011Assignee: Sumitomo Bakelite Company, Ltd.Inventors: Takahiro Kotani, Yoshinori Nishitani, Daisuke Oka
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Publication number: 20080128922Abstract: There is provided an epoxy resin composition for encapsulating a semiconductor comprising an epoxy resin (A), wherein the epoxy resin (A) including: a crystalline epoxy resin (a1) having a melting point of 50° C. to 150° C., an epoxy resin (a2) represented by formula (1), and at least one epoxy resin (a3) selected from an epoxy resin represented by formula (2) and an epoxy resin represented by a formula (3): in which R1's, which may be the same or different, represent a hydrocarbon group having 1 to 4 carbon atoms; R2's, which may be the same or different, represent a hydrogen atom or a hydrocarbon group having 1 to 4 carbon atoms; m is an integer of 0 to 5; and n is an integer of 0 to 6.Type: ApplicationFiled: October 31, 2007Publication date: June 5, 2008Inventors: Takahiro Kotani, Yoshinori Nishitani, Daisuke Oka