Patents by Inventor Toshikazu Hirayama
Toshikazu Hirayama 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: 7622767Abstract: In a semiconductor device, a SiN first protective insulating film is formed on a semiconductor layer. A T-shaped gate electrode is formed on the semiconductor layer. A SiN second protective insulating film spreads in an umbrella shape from above the T-shaped gate electrode. A hollow region is formed between the two SiN films. The SiN films are coated with a SiN third protective insulating film with the hollow region remaining.Type: GrantFiled: November 21, 2007Date of Patent: November 24, 2009Assignee: Mitsubishi Electric CorporationInventors: Yoichi Nogami, Toshikazu Hirayama
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Publication number: 20090014758Abstract: In a semiconductor device, a SiN first protective insulating film is formed on a semiconductor layer. A T-shaped gate electrode is formed on the semiconductor layer. A SiN second protective insulating film spreads in an umbrella shape from above the T-shaped gate electrode. A hollow region is formed between the two SiN films. The SiN films are coated with a SiN third protective insulating film with the hollow region remaining.Type: ApplicationFiled: November 21, 2007Publication date: January 15, 2009Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Yoichi Nogami, Toshikazu Hirayama
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Patent number: 7041087Abstract: A pre-filled syringe comprising a glass barrel (1), a sealing member (5) fitted in a medical liquid discharge port (11) of the barrel (1), a tip member (2) mounted around the sealing member (5) on the medical liquid discharge port (11) of the barrel (1), a closing member (4), a cap member (3), and a holding member (6); the sealing member (5) having a through-hole (51) formed in the axial direction; the tip member (2) including a skirt (24) provided with an engagement pawl (25) on the inner wall of a lower end thereof, a top wall (23), a needle mounting portion (21), and a medical liquid deriving portion (22), and being provided with a medical liquid passage (28); the closing member (4) being inserted into the medical liquid passage (28) and the through-hole (51) to close the through-hole (51) and so prevent oxygen contamination and deterioration of the medical liquid.Type: GrantFiled: March 28, 2001Date of Patent: May 9, 2006Assignee: Astrazeneca UK LimitedInventors: Malcolm John Henderson, Toshikazu Hirayama, Masafumi Aramata
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Patent number: 6901975Abstract: The drug solution container with a connector for communicating contains a drug solution container having at a tip end thereof an injection needle connecting part, and a hollow connector for communicating attached to a tip end of the drug solution container, and the connector for communicating contains a cylindrical guide part with a bottom capable of being slidably attached to an opening of a vial, and a hollow penetrating member provided at a center of the bottom of the guide part to penetrate the bottom. The penetrating member contains a penetrating needle at a tip end side with respect to the bottom, and a connecting part at a base end side with respect to the bottom, and the connecting part is connected to the injection needle connecting part through a fragile portion. According to the drug solution container with a connector for communicating, an operation for preparation of a drug solution can be easily carried out in a short period of time without causing injury of an operator or coring.Type: GrantFiled: June 30, 2003Date of Patent: June 7, 2005Assignee: Nipro CorporationInventors: Masafumi Aramata, Hideki Yagi, Toshikazu Hirayama, Satoru Igarashi, Yoshihisa Murai, Teruhisa Hirobe
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Publication number: 20040087906Abstract: A pre-filled syringe comprising a glass barrel (1), a sealing member (5) fitted in a medical liquid discharge port (11) of the barrel (1), a tip member (2) mounted around the sealing member (5) on the medical liquid discharge port (11) of the barrel (1), a closing member (4), a cap member (3), and a holding member (6); the sealing member (5) having a through-hole (51) formed in the axial direction; the tip member (2) including a skirt (24) provided with an engagement pawl (25) on the inner wall of a lower end thereof, a top wall (23), a needle mounting portion (21), and a medical liquid deriving portion (22), and being provided with a medical liquid passage (28); the closing member (4) being inserted into the medical liquid passage (28) and the through-hole (51) to close the through-hole (51) and so prevent oxygen contamination and deterioration of the medical liquid.Type: ApplicationFiled: February 5, 2003Publication date: May 6, 2004Inventors: Malcolm John Henderson, Toshikazu Hirayama, Masafumi Aramata
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Publication number: 20040039365Abstract: The drug solution container with a connector for communicating contains a drug solution container having at a tip end thereof an injection needle connecting part, and a hollow connector for communicating attached to a tip end of the drug solution container, and the connector for communicating contains a cylindrical guide part with a bottom capable of being slidably attached to an opening of a vial, and a hollow penetrating member provided at a center of the bottom of the guide part to penetrate the bottom. The penetrating member contains a penetrating needle at a tip end side with respect to the bottom, and a connecting part at a base end side with respect to the bottom, and the connecting part is connected to the injection needle connecting part through a fragile portion. According to the drug solution container with a connector for communicating, an operation for preparation of a drug solution can be easily carried out in a short period of time without causing injury of an operator or coring.Type: ApplicationFiled: June 30, 2003Publication date: February 26, 2004Inventors: Masafumi Aramata, Hideki Yagi, Toshikazu Hirayama, Satoru Igarashi, Yoshihisa Murai, Teruhisa Hirobe
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Patent number: 6669762Abstract: An air trap comprises an air reservoir to be arranged in a liquid circulation line, and a hydrophilic filter which permits a liquid to permeate but does not permit gas bubbles to permeate, and which is arranged in the air reservoir to separate an upstream side of the liquid circulation line from the downstream side of the liquid circulation line. The filter has pores which meet conditions defined by equation: P<4h/d, where P represents a gas pressure, d is a diameter of the pores of the filter, and h is a surface tension of the liquid.Type: GrantFiled: December 21, 2001Date of Patent: December 30, 2003Assignee: Nipro CorporationInventors: Toshikazu Hirayama, Daisuke Ueno
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Publication number: 20020121195Abstract: An air trap comprises an air reservoir (2) to be arranged in a liquid circulation line, and a hydrophilic filter (3) which permits a liquid to permeate but does not permit gas bubbles to permeate and which is arranged in the air reservoir to separate an upstream side of the liquid circulation line from the downstream side of the liquid circulation line.Type: ApplicationFiled: December 21, 2001Publication date: September 5, 2002Inventors: Toshikazu Hirayama, Daisuke Ueno
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Patent number: 5899889Abstract: A prefilled syringe comprises a barrel having at a distal end a needle-connecting portion and at the proximal end an open end, a plastic tubular container having a mouth and a flexible hollow cylindrical body and containing a liquid medicament previously charged therein, and a plunger inserted into the barrel through the open end thereof and slidably held therein. The tubular container is held in the barrel so that the mouth thereof is placed in a lumen of the needle-connecting portion of the barrel. The cylindrical body is peeled off from the inner wall of the barrel and squeezed into a space between the barrel and the plunger when the plunger is pushed into the barrel.Type: GrantFiled: February 13, 1998Date of Patent: May 4, 1999Assignee: Nissho CorporationInventors: Hitoshi Futagawa, Mitsuo Murakami, Masafumi Aramata, Toshikazu Hirayama, Yohji Arifuku
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Patent number: 5827233Abstract: A prefilled syringe comprises a barrel (1) having at a distal end a needle-connecting portion (11) and at the proximal end an open end; a plastic tubular container (3) having a mouth (31) and a flexible hollow cylindrical body (32) and containing a liquid medicament (S) previously charged therein, and a plunger (2) inserted into the barrel (1) through the open end thereof and slidably held therein. The tubular container (3) is held in the barrel (1) so that the mouth (31) thereof is placed in a lumen of the needle-connecting portion (11) of the barrel (1) and that the cylindrical body (32) is peeled off from the inner wall of the barrel (1) and squeezed into a space between the barrel (1) and plunger (2) when the plunger (2) is pushed into the barrel.Type: GrantFiled: December 24, 1996Date of Patent: October 27, 1998Assignee: Nissno CorporationInventors: Hitoshi Futagawa, Mitsuo Murakami, Masafumi Aramata, Toshikazu Hirayama, Yohji Arifuku
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Patent number: 4401297Abstract: The present invention relates to a sintering furnace for powder metallurgy of cemented carbides, cermets and ceramics, which comprises a main furnace body, a heating chamber provided in the main body, a table having a moving means for carrying a workpiece in or out of the heating chamber and a means for cooling the interior of the furnace with a heat exchanger fitted to the exterior of the main furnace body, and a method for the sintering and heat treatment of cemented carbides in the sintering furnace as claimed in claim 1, which comprises sintering cemented carbides and cooling rapidly at a cooling rate of at least 30.degree. C./min from the sintering temperature being at least a temperature at which a liquid phase appears to at most 1000.degree. C. by the use of an inert gas as a coolant.Type: GrantFiled: August 27, 1981Date of Patent: August 30, 1983Assignee: Sumitomo Electric Industries, Ltd.Inventors: Yoshihiko Doi, Toshikazu Hirayama, Yasushi Miyawaki, Masao Maruyama
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Patent number: D472628Type: GrantFiled: November 30, 2001Date of Patent: April 1, 2003Assignees: Nipro Corporation, Sunstar Inc.Inventors: Toshikazu Hirayama, Shuji Hasegawa, Toshio Tochiyama, Seiji Tokuoka, Tooru Eguchi, Junko Yoneda
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Patent number: D610679Type: GrantFiled: December 24, 2008Date of Patent: February 23, 2010Assignee: Nipro CorporationInventors: Naoki Nakagawa, Hidenori Takahashi, Toshikazu Hirayama