Patents by Inventor Yuko Iijima
Yuko Iijima 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: 8865886Abstract: An effluent produced in oxidation of a cellulosic material with an oxidizing agent in the presence of an N-oxyl compound and a bromide and/or iodide is deionized by electrodialysis to an inorganic salt concentration of less than 0.4%, whereby the N-oxyl compound in the effluent is concentrated and recovered. The N-oxyl compound thus recovered can be reused in oxidation of a cellulosic material. Preferably, the effluent is subjected to reduction treatment and ion exchange resin treatment prior to the electrodialysis.Type: GrantFiled: February 16, 2010Date of Patent: October 21, 2014Assignee: Nippon Paper Industries Co., Ltd.Inventors: Shoichi Miyawaki, Shiho Katsukawa, Hiroshi Abe, Yuko Iijima, Akira Isogai
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Patent number: 8414739Abstract: There is provided a filled paper containing a coated filler obtained by coating a filler with a acrylamide copolymer (composite PAM) comprising (A) an anionic polysaccharide and (B) a cationic and/or an amphoteric acrylamide copolymer. The composite PAM is obtained, for example, by mixing the component (A) and the component (B). Since the filler is treated with a combination of the components (A) and (B) different from each other in charge properties and structure, suitable coagulation effect can be attained and the coated filler has excellent affinity for pulp slurry. Therefore, even in the case of a highly filled paper, a large paper strengthening effect can be attained by using a small amount of the chemical agent.Type: GrantFiled: March 16, 2006Date of Patent: April 9, 2013Assignees: Harima Chemicals, Inc., Nippon Paper Industries Co., Ltd.Inventors: Yoshiharu Kimura, Takao Sezaki, Yuko Iijima, Koji Kutsuwa
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Patent number: 8377563Abstract: A papermaking additive comprising cellulose nanofibers whose aqueous solution at a concentration of 2% (w/v) has a B-type viscosity (60 rpm, 20° C.) of 500 to 7000 mPa·s, preferably 500 to 2000 mPa·s is used to prepare a paper having improved air resistance and smoothness. This additive is prepared by oxidizing a cellulosic material with an oxidizing agent in the presence of (1) N-oxyl compound(s) and (2) bromide, iodide or a mixture thereof to prepare oxidized cellulose, and finely grinding the oxidized cellulose in a wet condition to convert the oxidized cellulose into nanofibers.Type: GrantFiled: March 25, 2009Date of Patent: February 19, 2013Assignee: Nippon Paper Industruies Co., Ltd.Inventors: Shoichi Miyawaki, Shiho Katsukawa, Hiroshi Abe, Yuko Iijima, Akira Isogai
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Patent number: 8287692Abstract: Cellulose nanofibers are produced using a 4-hydroxy TEMPO derivative by treating a cellulosic material with an oxidizing agent in water in the presence of a cellulose oxidation catalyst containing an N-oxyl compound to prepare oxidized cellulos, and microfibrillating the oxidized cellulose.Type: GrantFiled: December 25, 2008Date of Patent: October 16, 2012Assignee: Nippon Paper Industries Co., Ltd.Inventors: Shoichi Miyawaki, Shiho Katsukawa, Hiroshi Abe, Yuko Iijima, Akira Isogai
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Publication number: 20120009661Abstract: A cellulosic material is oxidized with an oxidizing agent in the presence of (1) an N-oxyl compound and (2) a bromide, an iodide or a mixture thereof. The resulting material is subjected to defibration and dispersion treatment to prepare a cellulose nanofiber dispersion liquid. The dispersion liquid thus obtained is acidified so that the cellulose nanofibers are aggregated to form a gelatinous substance. Ultimately, the gelatinous substance is treated mechanically to obtain a cellulose gel dispersion liquid which has low water absorbency and does not tend to swell.Type: ApplicationFiled: February 16, 2010Publication date: January 12, 2012Inventors: Shoichi Miyawaki, Shiho Katsukawa, Hiroshi Abe, Yuko Iijima, Akira Isogai
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Publication number: 20110008638Abstract: A papermaking additive comprising cellulose nanofibers whose aqueous solution at a concentration of 2% (w/v) has a B-type viscosity (60 rpm, 20° C.) of 500 to 7000 mPa·s, preferably 500 to 2000 mPa·s is used to prepare a paper having improved air resistance and smoothness. This additive is prepared by oxidizing a cellulosic material with an oxidizing agent in the presence of (1) N-oxyl compound (s) and (2) bromide, iodide or a mixture thereof to prepare oxidized cellulose, and finely grinding the oxidized cellulose in a wet condition to convert the oxidized cellulose into nanofibers.Type: ApplicationFiled: March 25, 2009Publication date: January 13, 2011Inventors: Shoichi Miyawaki, Shiho Katsukawa, Hiroshi Abe, Yuko Iijima, Akira Isogai
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Publication number: 20100282422Abstract: The present invention aims to provide a process for producing cellulose nanofibers using a 4-hydroxy TEMPO derivative less expensive than TEMPO and a process capable of rapidly producing homogeneous cellulose nanofibers.Type: ApplicationFiled: December 25, 2008Publication date: November 11, 2010Inventors: Shoichi Miyawaki, Shiho Katsukawa, Hiroshi Abe, Yuko Iijima, Akira Isogai
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Publication number: 20090020250Abstract: There is provided a filled paper containing a coated filler obtained by coating a filler with a acrylamide copolymer (composite PAM) comprising (A) an anionic polysaccharide and (B) a cationic and/or an amphoteric acrylamide copolymer. The composite PAM is obtained, for example, by mixing the component (A) and the component (B). Since the filler is treated with a combination of the components (A) and (B) different from each other in charge properties and structure, suitable coagulation effect can be attained and the coated filler has excellent affinity for pulp slurry. Therefore, even in the case of a highly filled paper, a large paper strengthening effect can be attained by using a small amount of the chemical agent.Type: ApplicationFiled: March 16, 2006Publication date: January 22, 2009Inventors: Yoshiharu Kimura, Takao Sezaki, Yuko Iijima, Koji Kutsuwa
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Patent number: 7190694Abstract: A communications system connected via a bus capable of transmitting multiplexed packets of control signals and AV signals while providing an environment, which is the same as an environment where connections are made using analog signal lines. A register with a fixed address is taken to be a virtual plug for each of a plurality of equipment. When the plug enable for the input plug is set to 1, an isochronous communication packet for the AV signal on the channel set by the channel number is received. When the plug enable for the output plug is set to one and the isochronous communication packet for the information signal is sent on the channel, then the channel number is set in the channel number field at a transmission speed designated by the DR (Data Rate) field at the bandwidth presented in the bandwidth field.Type: GrantFiled: May 19, 2003Date of Patent: March 13, 2007Assignee: Sony CorporationInventors: Makoto Sato, Harumi Kawamura, Yuko Iijima, Hisato Shima
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Patent number: 7151771Abstract: A communications system connected via a bus capable of transmitting multiplexed packets of control signals and AV signals while providing an environment, which is the same as an environment where connections are made using analog signal lines. A register with a fixed address is taken to be a virtual plug for each of a plurality of equipment. When the plug enable for the input plug is set to 1, an isochronous communication packet for the AV signal on the channel set by the channel number is received. When the plug enable for the output plug is set to one and the isochronous communication packet for the information signal is sent on the channel, then the channel number is set in the channel number field at a transmission speed designated by the DR (Data Rate) field at the bandwidth presented in the bandwidth field.Type: GrantFiled: May 19, 2003Date of Patent: December 19, 2006Assignee: Sony CorporationInventors: Makoto Sato, Harumi Kawamura, Yuko Iijima, Hisato Shima
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Patent number: 7139642Abstract: The present invention aims to provide an improved entertainment property. In a robot system where a plurality of robot apparatus act autonomously, each robot apparatus has wireless communication means, and when the robot apparatus make conversation between themselves, the contents of the conversation are transmitted to and received by the robot apparatus as a command and/or a semantics through the wireless communication means of both.Type: GrantFiled: November 7, 2002Date of Patent: November 21, 2006Assignee: Sony CorporationInventors: Satoru Kamoto, Susumu Oikawa, Kazuyuki Iijima, Kazuo Ishii, Yuko Iijima, Noriyuki Fukushima, Seiichi Takamura, Jun Hiroi, Nozomu Ikeda
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Patent number: 6970431Abstract: When an interruption of a bus reset occurs in accordance with the IEEE1394 standard at the time of turn-on of a power source or the like, whether a loop connection has been made or not is discriminated. If it is determined that the loop connection has been made, “i.LINK NG” or “i.LINK LOOP” as a warning display showing that the loop connection has been made is displayed. By displaying such a warning, the user or the like can recognize the fact that the loop connection has been made. A measure for cancelling the loop connection can be performed. If it is determined that the loop connection is not performed, such a warning display is not performed but the ordinary operation according to the IEEE1394 standard is performed.Type: GrantFiled: June 12, 2000Date of Patent: November 29, 2005Assignee: Sony CorporationInventors: Yuko Iijima, Eiji Tadokoro, Hiraku Inoue
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Patent number: 6816967Abstract: An electronic device receives data containing content data transmitted through a bus in the form of a packet. The electronic equipment has a receiving portion, a judgment portion and an output controller. The receiving portion receives the data transmitted in the form of a packet through the bus. The judgment portion extracts copyright information from the data supplied from the reception portion, and judges on the basis of the copyright information thus extracted whether the content data contained in the data received are allowed to be copied. The output controller is supplied with the judgment result from the judgment portion to generate notification data corresponding to the judgment result.Type: GrantFiled: June 17, 2000Date of Patent: November 9, 2004Assignee: Sony CorporationInventors: Yuko Iijima, Eiji Tadokoro, Hiraku Inoue
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Patent number: 6816485Abstract: A communications system connected via a bus capable of transferring combinations of control signals and AV signals as packets while providing an environment which is the same as an environment where connections are made using analog signal lines. A register decided by an address is taken to be a virtual plug for each item of equipment. The plug enable for the input plug is set to 1 and a synchronous communication packet for the AV signal from the channel set by the channel number is received. The plug enable for the output plug is set to one and the synchronous communication packet for the information signal is sent to the channel set by the channel number at a transmission speed designated by the DR (Data Rate) at the bandwidth expressed by “Bandwidth”.Type: GrantFiled: October 17, 2002Date of Patent: November 9, 2004Assignee: Sony CorporationInventors: Makoto Sato, Harumi Kawamura, Yuko Iijima, Hisato Shima
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Patent number: 6748428Abstract: In a network connected with a plurality of electronic devices 11 to 16, an electronic device 13 as a leader inquires about system resource capacities from electronic devices 11 and 14 which can become controllers, in a step S1. The electronic device 13 further inquires about sizes of DCMs from electronic devices 12, 13, 15, and 16, respectively, in a step S2. The electronic device 13 calculates the memory capacities of the electronic devices 11 and 14 to which DCMs can be assigned, and the size of the DCM of each electronic device, in a step S3. Further, the electronic device 13 determines whether or not the DCM of each electronic device can be assigned to the electronic devices 11 and 14, in a step S4, and then assigns DCMs which can be possessed by the devices 11 and 14, respectively, in a step S5.Type: GrantFiled: December 3, 1999Date of Patent: June 8, 2004Assignee: Sony CorporationInventor: Yuko Iijima
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Publication number: 20040022201Abstract: A communications system connected via a bus capable of transferring combinations of control signals and AV signals as packets while providing an environment which is the same as an environment where connections are made using analog signal lines. A register decided by an address is taken to be a virtual plug for each item of equipment. The plug enable for the input plug is set to 1 and a synchronous communication packet for the AV signal from the channel set by the channel number is received. The plug enable for the output plug is set to one and the synchronous communication packet for the information signal is sent to the channel set by the channel number at a transmission speed designated by the DR (Data Rate) at the bandwidth expressed by “Bandwidth”.Type: ApplicationFiled: May 19, 2003Publication date: February 5, 2004Applicant: SONY CORPORATIONInventors: Makoto Sato, Harumi Kawamura, Yuko Iijima, Hisato Shima
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Publication number: 20030193935Abstract: A communications system connected via a bus capable of transferring combinations of control signals and AV signals as packets while providing an environment which is the same as an environment where connections are made using analog signal lines. A register decided by an address is taken to be a virtual plug for each item of equipment. The plug enable for the input plug is set to 1 and a synchronous communication packet for the AV signal from the channel set by the channel number is received. The plug enable for the output plug is set to one and the synchronous communication packet for the information signal is sent to the channel set by the channel number at a transmission speed designated by the DR (Data Rate) at the bandwidth expressed by “Bandwidth”.Type: ApplicationFiled: May 19, 2003Publication date: October 16, 2003Applicant: SONY CORPORATIONInventors: Makoto Sato, Harumi Kawamura, Yuko Iijima, Hisato Shima
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Patent number: 6629173Abstract: In order to secure the resources on a bus positively and execute the data transmission during a time zone set by a timer of a plurality of electronic equipment connected by a serial bus, a reserve operation setting unit 22 inputs reserve operation setting information for setting a predetermined equipment connected to the bus in a predetermined state at a predetermined time. A reserve operation execution unit 23 sets a predetermined equipment connected to the bus in a predetermined state at a predetermined time based on the information input from the reserve operation setting unit 22 or the information stored in a reserve operation storage unit 22. The reserve operation storage unit 24 stores the information for setting a reserve operation input to the reserve operation setting unit 22. A bus resources reservation unit 25 acquires or releases the bus resources based on the input to the reserve operation setting unit 22 or the storage in the reserve operation storage unit 24.Type: GrantFiled: January 10, 2000Date of Patent: September 30, 2003Assignee: Sony CorporationInventor: Yuko Iijima
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Patent number: 6584099Abstract: A communication command system controls communications between equipment having sub-devices for outputting different types of communications. A bus with different channels is connected to the input/output ports of the equipment to send communications back and forth between the equipment. A switch switches the connection between the sub-devices and the bus channels. A command master commands the switch to switch a particular sub-device to a particular bus channel and, in this manner, communications are set up between sub-devices of different equipment.Type: GrantFiled: October 24, 1996Date of Patent: June 24, 2003Assignee: Sony CorporationInventors: Makoto Sato, Harumi Kawamura, Yuko Iijima, Hisato Shima
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Publication number: 20030115390Abstract: In order to secure the resources on a bus positively and execute the data transmission during a time zone set by a timer of a plurality of electronic equipment connected by a serial bus, a reserve operation setting unit 22 inputs reserve operation setting information for setting a predetermined equipment connected to the bus in a predetermined state at a predetermined time. A reserve operation execution unit 23 sets a predetermined equipment connected to the bus in a predetermined state at a predetermined time based on the information input from the reserve operation setting unit 22 or the information stored in a reserve operation storage unit 22. The reserve operation storage unit 24 stores the information for setting a reserve operation input to the reserve operation setting unit 22. A bus resources reservation unit 25 acquires or releases the bus resources based on the input to the reserve operation setting unit 22 or the storage in the reserve operation storage unit 24.Type: ApplicationFiled: January 10, 2000Publication date: June 19, 2003Inventor: YUKO IIJIMA