Patents by Inventor Shin Sakurai
Shin Sakurai 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: 8207144Abstract: The present invention relates to a composition comprising a plurality of sodium salts represented by the formula (I): wherein, m1, n1, m2 and n2 respectively and independently represent a positive number between 0 and 2, provided that m1+n1=2, m2+n2=2, 0<m1+m2<4 and 0<n1+n2<4, and a method for producing the same, and a method for inhibiting the decomposition of a sodium salt represented by general formula (IV): comprising: having the sodium salt represented by general formula (IV) in the presence of the sodium salts represented by formula (I), and according to the present invention the stability over time of the sodium salt represented by general formula (IV) is improved.Type: GrantFiled: November 21, 2007Date of Patent: June 26, 2012Assignee: Eisai R & D Management Co., Ltd.Inventors: Shin Sakurai, Ken Furukawa, Kimihiro Matsuo, Kenichi Tagami
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Publication number: 20100152429Abstract: Disclosed are a sodium salt represented by the average formula (I) below, and a method for producing such a sodium salt. (In the formula, m1, n1, m2 and n2 independently represent 0 or a positive number not greater than 2, while satisfying m1+n1=2, m2+n2=2, 0<m1+m2<4 and 0<n1+n2<4.) Also disclosed is a decomposition suppression method which makes a sodium salt represented by average formula (I) coexist with a sodium salt represented by the general formula (IV) below. This method enables improvement of long-term stability of a sodium salt represented by general formula (IV).Type: ApplicationFiled: November 21, 2007Publication date: June 17, 2010Applicant: Eisai R&D Management Co., Ltd.Inventors: Shin Sakurai, Ken Furukawa, Kimihiro Matsuo, Kenichi Tagami
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Publication number: 20080227991Abstract: The present invention relates to a sodium salt represented by average formula (I): (wherein, m1, n1, m2 and n2 respectively and independently represent a positive number of 0 0r 2 or less, provided that m1+n1=2, m2+n2=2, 0<m1+m2<4 and 0<n1+n2<4), a method for producing the same, and a method for inhibiting decomposition of a sodium salt represented by general formula (IV): [CHEMICAL 4] comprising: having the sodium salt represented by general formula (IV) in the presence of the sodium salt represented by average formula (I), and according to the present invention the stability over time of the sodium salt represented by general formula (IV) is improved.Type: ApplicationFiled: November 21, 2007Publication date: September 18, 2008Inventors: Shin Sakurai, Ken Furukawa, Kimihiro Matsuo, Kenichi Tagami
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Patent number: 7229570Abstract: The present invention relates to a slurry for chemical mechanical polishing, which contains a silica polishing material, an oxidizing agent, a benzotriazole-based compound, a diketone and water.Type: GrantFiled: July 11, 2003Date of Patent: June 12, 2007Assignee: NEC Electronics CorporationInventors: Toshiji Taiji, Yasuaki Tsuchiya, Tomoyuki Ito, Kenichi Aoyagi, Shin Sakurai
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Patent number: 7084268Abstract: The present invention provides carbapenem hydrochloride trihydrate crystals, which are chemically stable, easily purified and useful as antimicrobial agents, a process for producing them, and a powdery charged preparation for injection containing them. That is, it provides carbapenem hydrochloride trihydrate crystals having a powdery X-ray diffraction pattern containing lattice distances (d) of 9.0, 4.1 and 2.8 ?, a process for producing them, and a powdery charged preparation for injection containing them.Type: GrantFiled: June 5, 2000Date of Patent: August 1, 2006Assignee: Eisai Co., Ltd.Inventors: Hiroyuki Chiba, Masahiko Tsujii, Astsushi Koiwa, Shin Sakurai, Akio Kayano, Hiroyuki Ishizuka, Hiroyuki Saito, Taiju Nakamura, Ikuo Kushida, Yasuyuki Suzuki, Takako Yoshiba, Kazuhide Ashizawa, Masahiro Sakurai, Eiichi Yamamoto
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Publication number: 20060040916Abstract: The present invention provides carbapenem hydrochloride trihydrate crystals, which are chemically stable, easily purified and useful as antimicrobial agents, a process for producing them, and a powdery charged preparation for injection containing them. That is, it provides carbapenem hydrochloride trihydrate crystals having a powdery X-ray diffraction pattern containing lattice distances (d) of 9.0, 4.1 and 2.8 ?, a process for producing them, and a powdery charged preparation for injection containing them.Type: ApplicationFiled: October 26, 2005Publication date: February 23, 2006Inventors: Hiroyuki Chiba, Masahiko Tsujii, Astsushi Koiwa, Shin Sakurai, Akio Kayano, Hiroyuki Ishizuka, Hiroyuki Saito, Taiju Nakamura, Ikuo Kushida, Yasuyuki Suzuki, Takako Yoshiba, Kazuhide Ashizawa, Masahiro Sakurai, Eiichi Yamamoto
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Publication number: 20040216389Abstract: This invention relates to a chemical mechanical polishing slurry comprising polishing grains, ammonium nitrate as an oxidizing agent, 1,2,4-triazole as a polishing promoter for a copper metal film and water and having a pH within a range of 3 to 4. The polishing slurry is suitable for forming a damascene copper-based metal interconnection comprising a tantalumr-based metal as a barrier metal film material.Type: ApplicationFiled: February 13, 2004Publication date: November 4, 2004Applicants: NEC ELECTRONICS CORPORATION, TOKYO MAGNETIC PRINTING CO., LTDInventors: Yasuaki Tsuchiya, Toshiji Taiji, Tetsuyuki Itakura, Shin Sakurai, Kenichi Aoyagi, Tomoyuki Ito
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Publication number: 20040021125Abstract: The present invention relates to a slurry for chemical mechanical polishing, which contains a silica polishing material, an oxidizing agent, a benzotriazole-based compound, a diketone and water.Type: ApplicationFiled: July 11, 2003Publication date: February 5, 2004Applicants: NEC ELECTRONICS CORPORATION, TOKYO MAGNETIC PRINTING CO., LTD.Inventors: Toshiji Taiji, Yasuaki Tsuchiya, Tomoyuki Ito, Kenichi Aoyagi, Shin Sakurai
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Publication number: 20040020135Abstract: A slurry for polishing copper-based metal containing a silica polishing material, an oxidizing agent, an amino acid, a triazole-based compound and water, wherein a content ratio of amino acid to triazole-based compound (amino acid/triazole-based compound (weight ratio)) is 5 to 8.Type: ApplicationFiled: July 21, 2003Publication date: February 5, 2004Applicants: NEC ELECTRONICS CORPORATION, TOKYO MAGNETIC PRINTING CO., LTDInventors: Yasuaki Tsuchiya, Tomoko Inoue, Shin Sakurai, Kenichi Aoyagi, Tetsuyuki Itakura
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Patent number: 6642377Abstract: A production process which comprises subjecting a basic antibiotic.oxalate (II) to salt-exchange with an alkali earth metal salt (III) of an inorganic acid: wherein the ring A means the basic antibiotic; R10 means a protected functional group used in organic synthesis; Ak—E means the alkali earth metal; and B means the inorganic acid, respectively.Type: GrantFiled: January 14, 2002Date of Patent: November 4, 2003Assignee: Eisai Co., Ltd.Inventors: Akio Kayano, Hiroyuki Chiba, Taiju Nakamura, Shin Sakurai, Hiroyuki Ishizuka, Hiroyuki Saito, Yuuki Komatsu, Manabu Sasho, Nobuaki Sato, Shigeto Negi
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Patent number: 6585786Abstract: By using a polishing slurry which contains, at least, a polishing grain, an oxidizing agent and a basic amino acid compound, it is possible to suppress dishing and erosion liable to be produced in chemical mechanical polishing (CMP) for a copper-based metal film when forming a buried interconnection of a copper-based metal on a barrier metal film of a tantalum-based metal.Type: GrantFiled: November 20, 2001Date of Patent: July 1, 2003Assignees: NEC Electronics Corporation, Tokyo Magnetic Printing Co., Ltd.Inventors: Yasuaki Tsuchiya, Tomoko Wake, Tetsuyuki Itakura, Shin Sakurai, Kenichi Aoyagi
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Patent number: 6585568Abstract: This invention provides a chemical mechanical polishing slurry for polishing a copper-based metal film formed on an insulating film comprising a concave on a substrate, comprising a polishing material, an oxidizing agent and water as well as a benzotriazole compound and a triazole compound. The polishing slurry may be used in CMP to form a reliable damascene electric connection with excellent electric properties at a higher polishing rate, i.e., a higher throughput while preventing dishing.Type: GrantFiled: November 21, 2001Date of Patent: July 1, 2003Assignees: NEC Electronics Corporation, Tokyo Magnetic Printing Co. LtdInventors: Yasuaki Tsuchiya, Tomoko Wake, Tetsuyuki Itakura, Shin Sakurai, Kenichi Aoyagi
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Patent number: 6530968Abstract: This invention provides a chemical mechanical polishing slurry for polishing a metal film formed on an insulating film with a concave on a substrate wherein the slurry contains a thickener without an ionic group with an opposite sign to a charge on a polishing material surface to 0.001 wt % or more and less than 0.05 wt % to the total amount of the slurry and has a slurry viscosity of 1 mPa·s to 5 mPa·s both inclusive. The polishing slurry may be used in CMP to form a reliable damascene electric connection with excellent electric properties at a higher polishing rate, i.e., a higher throughput while preventing dishing or erosion.Type: GrantFiled: November 20, 2001Date of Patent: March 11, 2003Assignees: NEC Electronics Corporation, Tokyo Magnetic Printing Co., Ltd.Inventors: Yasuaki Tsuchiya, Tomoko Wake, Tetsuyuki Itakura, Shin Sakurai, Kenichi Aoyagi
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Patent number: 6478834Abstract: By using a polishing slurry which comprises, at least, a polishing grain, an oxidizing agent and a higher-mono-primary amine, it is possible to suppress dishing and erosion liable to be produced in chemical mechanical polishing (CMP) for a copper-based metal film when forming a buried interconnection of a copper-based metal on a barrier metal film of a tantalum-based metal.Type: GrantFiled: November 20, 2001Date of Patent: November 12, 2002Assignees: NEC Corp., Tokyo Magnetic Printing Co. LtdInventors: Yasuaki Tsuchiya, Tomoko Wake, Tetsuyuki Itakura, Shin Sakurai, Kenichi Aoyagi
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Publication number: 20020104268Abstract: By using a polishing slurry which comprises, at least, a polishing grain, an oxidizing agent and a higher-mono-primary amine, it is possible to suppress dishing and erosion liable to be produced in chemical mechanical polishing (CMP) for a copper-based metal film when forming a buried interconnection of a copper-based metal on a barrier metal film of a tantalum-based metal.Type: ApplicationFiled: November 20, 2001Publication date: August 8, 2002Applicant: NEC CorporationInventors: Yasuaki Tsuchiya, Tomoko Wake, Tetsuyuki Itakura, Shin Sakurai, Kenichi Aoyagi
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Publication number: 20020095872Abstract: This invention provides a chemical mechanical polishing slurry for polishing a metal film formed on an insulating film with a concave on a substrate wherein the slurry contains a thickener without an ionic group with an opposite sign to a charge on a polishing material surface to 0.001 wt % or more and less than 0.05 wt% to the total amount of the slurry and has a slurry viscosity of 1 mPa·s to 5 mPa·s both inclusive. The polishing slurry may be used in CMP to form a reliable damascene electric connection with excellent electric properties at a higher polishing rate, i.e., a higher throughput while preventing dishing or erosion.Type: ApplicationFiled: November 20, 2001Publication date: July 25, 2002Applicant: NEC CorporationInventors: Yasuaki Tsuchiya, Tomoko Wake, Tetsuyuki Itakura, Shin Sakurai, Kenichi Aoyagi
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Publication number: 20020095874Abstract: By using a polishing slurry which contains, at least, a polishing grain, an oxidizing agent and a basic amino acid compound, it is possible to suppress dishing and erosion liable to be produced in chemical mechanical polishing (CMP) for a copper-based metal film when forming a buried interconnection of a copper-based metal on a barrier metal film of a tantalum-based metal.Type: ApplicationFiled: November 20, 2001Publication date: July 25, 2002Applicant: NEC CorporationInventors: Yasuaki Tsuchiya, Tomoko Wake, Tetsuyuki Itakura, Shin Sakurai, Kenichi Aoyagi
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Publication number: 20020093002Abstract: This invention provides a chemical mechanical polishing slurry for polishing a copper-based metal film formed on an insulating film comprising a concave on a substrate, comprising a polishing material, an oxidizing agent and water as well as a benzotriazole compound and a triazole compound. The polishing slurry may be used in CMP to form a reliable damascene electric connection with excellent electric properties at a higher polishing rate, i.e., a higher throughput while preventing dishing.Type: ApplicationFiled: November 21, 2001Publication date: July 18, 2002Applicant: NEC CorporationInventors: Yasuaki Tsuchiya, Tomoko Wake, Tetsuyuki Itakura, Shin Sakurai, Kenichi Aoyagi
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Publication number: 20010018270Abstract: The present invention relates to a slurry used for chemical mechanical polishing of a substrate having an insulating film and a tantalum-containing metal film formed on the insulting film, which slurry contains a silica abrasive and a polycarboxylic acid such as oxalic acid, malonic acid, tartaric acid, malic acid, glutaric acid, citric acid, maleic acid or the like. According to the present invention, a buried electric connection of high reliability and excellent electrical properties can be formed at a high polishing rate, i.e. at a high throughput with the generation of dishing and erosion being suppressed.Type: ApplicationFiled: December 20, 2000Publication date: August 30, 2001Inventors: Yasuaki Tsuchiya, Tetsuyuki Itakura, Shin Sakurai
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Publication number: 20010006224Abstract: In chemical mechanical polishing of a substrate comprising a tantalum-containing metal film, a slurry for chemical mechanical polishing comprising a silica polishing grain and an inorganic salt in an amount of 0.01 wt % to 10 wt % both inclusive may be used to prevent dishing and erosion, as well as to achieve an improved polishing rate for tantalum without any damage to tantalum.Type: ApplicationFiled: December 20, 2000Publication date: July 5, 2001Inventors: Yasuaki Tsuchiya, Tomoko Wake, Tetsuyuki Itakura, Shin Sakurai, Kenichi Aoyagi