Patents by Inventor Atsuki Yamazaki
Atsuki Yamazaki 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).
-
Publication number: 20240101093Abstract: A vehicle brake system includes a switching valve switchable between a first state allowing communication between a first fluid pressure generating device and a frictional brake and a second state allowing communication between a second fluid pressure generating device and the frictional brake. The second fluid pressure generating device generates a fluid pressure by moving a piston with an electric actuator, and has a fluid pressure supply port connected to the switching valve and an atmosphere opening port connected to a reservoir tank. When, due to a failure, the switching valve becomes a third state in which the switching valve makes each of the first fluid pressure generating device and the second fluid pressure generating device communicate with the frictional brake, a control device controls the second fluid pressure generating device to close the atmosphere opening port with the piston.Type: ApplicationFiled: September 20, 2023Publication date: March 28, 2024Inventors: Atsuki OHIRA, Eisuke HORII, Hiroyuki IWASAKI, Masayuki UENO, Shotaro YAMAZAKI, Takashi SHIMADA, Tomoaki KOTAKI, Yohei SATO
-
Publication number: 20240075915Abstract: A vehicle brake system includes a first fluid pressure generating device for generating a fluid pressure according to a brake operating amount, a second fluid pressure generating device for generating a fluid pressure by moving a piston with an electric actuator, and a switching valve switchable between a first state allowing communication between the first fluid pressure generating device and a vehicle behavior stabilizing device and a second state allowing communication between the second fluid pressure generating device and the vehicle behavior stabilizing device. A control device places the switching valve in the second state during execution of automatic brake control, and places the switching valve in the first state when a predetermined abnormality occurs in the vehicle, except that the control device places the switching valve in the second state when an abnormality including inability of the second fluid pressure generating device to generate the fluid pressure occurs.Type: ApplicationFiled: September 5, 2023Publication date: March 7, 2024Inventors: Eisuke HORII, Hiroyuki IWASAKI, Yohei SATO, Tomoaki KOTAKI, Masayuki UENO, Shotaro YAMAZAKI, Atsuki OHIRA
-
Patent number: 5856564Abstract: This invention relates to nitrogen-containing aromatic 5-membered ring-condensed benzazepine derivatives represented by the general formula (I) ##STR1## (symbols in the formula have the following meanings; ring B: a nitrogen-containing aromatic 5-membered ring having at least 1 nitrogen atom and optionally one oxygen or sulfur atom, which may optionally have substituent(s), R.sup.1 and R.sup.2 : these may be the same or different from each other and each represents a hydrogen atom, a halogen atom, a lower alkyl group, an amino group which may optionally be substituted by lower alkyl group(s), or a lower alkoxy group,A: a single bond; a group represented by the formula --NHCO--(CR.sup.3 R.sup.4).sub.n --,n: 0 or an integer of from 1 to 3,R.sup.3 and R.sup.4 : these may be the same or different from each other and each represents a hydrogen atom, a lower alkyl group (provided that R.sup.3 and R.sup.Type: GrantFiled: November 18, 1997Date of Patent: January 5, 1999Assignee: Yamanouchi Pharmaceutical Co., Ltd.Inventors: Akihiro Tanaka, Hiroyuki Koshio, Nobuaki Taniguchi, Akira Matsuhisa, Ken-ichiro Sakamoto, Atsuki Yamazaki, Takeyuki Yatsu
-
Patent number: 5723606Abstract: This invention relates to nitrogen-containing aromatic 5-membered ring-condensed benzazepine derivatives represented by the general formula (I) ##STR1## (symbols in the formula have the following meanings; ring B: a nitrogen-containing aromatic 5-membered ring having at least 1 nitrogen atom and optionally one oxygen or sulfur atom, which may optionally have substituent(s), R.sup.1 and R.sup.2 : these may be the same or different from each other and each represents a hydrogen atom, a halogen atom, a lower alkyl group, an amino group which may optionally be substituted by lower alkyl group(s), or a lower alkoxy group,A: a single bond; a group represented by the formula--NHCO--(CR.sup.3 R.sup.4).sub.n --,n: 0 or an integer of from 1 to 3,R.sup.3 and R.sup.4 : these may be the same or different from each other and each represents a hydrogen atom, a lower alkyl group (provided that R.sup.3 and R.sup.Type: GrantFiled: January 19, 1996Date of Patent: March 3, 1998Assignee: Yamanouchi Pharmaceutical Co., Ltd.Inventors: Akihiro Tanaka, Hiroyuki Koshio, Nobuaki Taniguchi, Akira Matsuhisa, Ken-ichiro Sakamoto, Atsuki Yamazaki, Takeyuki Yatsu
-
Patent number: 4845211Abstract: Various 7-amino-3-substituted-methyl-3-cephem-4-carboxylic acids and lower alkylsily derivatives such as 7-amino-3-(2,3-cyclopenteno-1-pyridiniomethyl)-3-cephem-4 -carboxylic acid iodide and trimethylsilyl 7-trimethylsilylamino-3 -(5,6,7,8-tetrahydro-2-isoquinoliniomethyl)-3-cephem-4 -carboxylate iodide are valuable intermediates in the preparation of new and novel antibacterial agents. A new process for the preparation of these acids and the derivatives has been devised.Type: GrantFiled: May 4, 1987Date of Patent: July 4, 1989Assignee: Yamanouchi Pharmaceutical Co., Ltd.Inventors: Tadao Shibanuma, Kohji Nakano, Noriaki Nagano, Yukiyasu Murakami, Ryuichiro Hara, Akio Koda, Atsuki Yamazaki
-
Patent number: 4699980Abstract: Various 7-amino-3-substituted-methyl-3-cephem-4-carboxylic acids and lower alkylsilyl derivatives such as 7-amino-3-(2,3-cyclopenteno-1-pyridiniomethyl)-3-cephem-4-carboxylic acid iodide and trimethylsilyl 7-trimethyl-silylamino-3-(5,6,7,8-tetrahydro-2-isoquinoliniomethyl)-3-ceph em-4-carboxylate iodide are valuable intermediates in the preparation of new and novel antibacterial agents. A new process for the preparation of these acids and the derivatives has been devised.Type: GrantFiled: February 8, 1985Date of Patent: October 13, 1987Assignee: Yamanouchi Pharmacutical Co., Ltd.Inventors: Tadao Shibanuma, Kohji Nakano, Noriaki Nagano, Yukiyasu Murakami, Ryuichiro Hara, Akio Koda, Atsuki Yamazaki
-
Patent number: 4690921Abstract: Novel cephalosporin compounds of the formula ##STR1## wherein the wavy line means syn-form and anti-form bonds, R.sup.1 represents a cyanomethyl group, a thiocarbamoylmethyl group or an aminothiazolylmethyl group, and A represents a unsubstituted or substituted pyridinio group; and salts thereof. These compounds have excellent antibacterial activities.Type: GrantFiled: September 28, 1984Date of Patent: September 1, 1987Assignee: Yamanouchi Pharmaceutical Co., Ltd.Inventors: Tadao Shibanuma, Noriaki Nagano, Ryuichiro Hara, Kohji Nakano, Akio Koda, Atsuki Yamazaki, Yukiyasu Murakami
-
Patent number: 4414153Abstract: Substituted 1,3-dithietane-2-carboxylic acid derivatives useful as intermediates for the preparation of highly effective penicillin and cephalosporin derivatives and the preparation thereof.Type: GrantFiled: September 23, 1981Date of Patent: November 8, 1983Assignee: Yamanouchi Pharmaceutical Co. Ltd.Inventors: Masaru Iwanami, Tetsuya Maeda, Yoshinobu Nagano, Masaharu Fujimoto, Noriaki Nagano, Atsuki Yamazaki, Kazaharu Tamazawa, Kiyoshi Murase, Tadao Shibanuma
-
Patent number: 4404373Abstract: The invention relates to novel 7.alpha.-methoxycephalosporin derivatives having at the 7.beta.-position an amido group acylated by a 1,3-dithietane carboxylic acid residue and to 7.beta.-isothiazolylthioacetamido-7.alpha.-methoxycephalosporins having antibacterial activity by themselves and, as the case may be, capable of being converted into the aforesaid 7.alpha.-methoxycephalosporin derivatives. The compounds of this invention exhibit excellent antibacterial activity and are particularly effective against gram negative bacteria.Type: GrantFiled: November 19, 1980Date of Patent: September 13, 1983Assignee: Yamanouchi Pharmaceutical Co., Ltd.Inventors: Masaru Iwanami, Tetsuya Maeda, Yoshinobu Nagano, Masaharu Fujimoto, Noriaki Nagano, Atsuki Yamazaki
-
Patent number: 4263432Abstract: The invention relates to novel 7.alpha.-methoxycephalosporin derivatives having at the 7.beta.-position an amido group acylated by a 1,3-dithietane carboxylic acid residue and to 7.beta.-isothiazolylthioacetamido-7.alpha.-methoxycephalosporins having antibacterial activity by themselves and, as the case may be, capable of being converted into the aforesaid 7.alpha.-methoxycaphalosporin derivatives. The compounds of this invention exhibit excellent antibacterial activity and are particularly effective against gram negative bacteria.Type: GrantFiled: June 7, 1978Date of Patent: April 21, 1981Assignee: Yamanouchi Pharmaceutical Co., Ltd.Inventors: Masaru Iwanami, Tetsuya Maeda, Yoshinobu Nagano, Masaharu Fujimoto, Noriaki Nagano, Atsuki Yamazaki
-
Patent number: 4198339Abstract: Substituted 1,3-dithietane-2-carboxylic acid derivatives useful as intermediates for the preparation of highly effective penicillin and cephalosporin derivatives and the preparation thereof.Type: GrantFiled: June 7, 1978Date of Patent: April 15, 1980Assignee: Yamanouchi Pharmaceutical Co., Ltd.Inventors: Masaru Iwanami, Tetsuya Maeda, Yoshinobu Nagano, Masaharu Fujimoto, Noriaki Nagano, Atsuki Yamazaki, Kazaharu Tamazawa, Kiyoshi Murase, Tadao Shibanuma
-
Patent number: 4165429Abstract: Novel 7.alpha.-methoxy-7.beta.-heterocyclic thioacetamido-3-heterocyclic thiomethyl-.DELTA..sup.3 -cephem-4-carboxylic acid derivatives and pharmaceutically acceptable salts thereof. These compounds show high antibiotic activities against various microorganisms including gram positive and negative bacteria.Type: GrantFiled: June 15, 1977Date of Patent: August 21, 1979Assignee: Yamanouchi Pharmaceutical Co., Ltd.Inventors: Masaru Iwanami, Masuo Murakami, Yoshinobu Nagano, Masaharu Fujimoto, Tetsuya Maeda, Noriaki Nagano, Atsuki Yamazaki
-
Patent number: RE32491Abstract: The invention relates to novel 7.alpha.-methoxycephalosporin derivatives having at the 7.beta.-position an amido group acylated by a 1,3-dithietane carboxylic acid residue and to 7.beta.-isothiazolylthioacetamido-7.alpha.-methoxycephalosporins having antibacterial activity by themselves and, as the case may be, capable of being converted into the aforesaid 7.alpha.-methoxycephalosporin derivatives. The compounds of this invention exhibit excellent antibacterial activity and are particularly effective against gram negative bacteria.Type: GrantFiled: April 25, 1985Date of Patent: September 1, 1987Assignee: Yamanouchi Pharmaceutical Co., Ltd.Inventors: Masaru Iwanami, Tetsuya Maeda, Yoshinobu Nagano, Masaharu Fujimoto, Noriaki Nagano, Atsuki Yamazaki
-
Patent number: RE33778Abstract: Substituted 1,3-dithietane-2-carboxylic acid derivatives useful as intermediates for the preparation of highly effective penicillin and cephalosporin derivatives and the preparation thereof.Type: GrantFiled: December 8, 1989Date of Patent: December 24, 1991Assignee: Yamanouchi Pharmaceutical Co., Ltd.Inventors: Masaru Iwanami, Tetsuya Maeda, Yoshinobu Nagano, Masaharu Fujimoto, Noriaki Nagano, Atsuki Yamazaki, Kasaharu Tamazawa, Kiyoshi Murase, Tadao Shibanuma