Patents by Inventor Masayuki Fukuda
Masayuki Fukuda 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: 8382894Abstract: Silicon wafers wherein slip dislocations and warpages during device production are suppressed, contain BMDs with an octahedral shape, and of BMDs at a depth greater than 50 ?m from the surface of the wafer, the density of BMDs with diagonal size of 10 nm to 50 nm is ?1×1012/cm3, and the density of BSFs is ?1×108/cm3. The present silicon wafers preferably have an interstitial oxygen concentration of 4×1017 atoms/cm3 to 6×1017 atoms/cm3, and a density of BMDs with diagonal size of ?200 nm of not more than 1×107/cm3.Type: GrantFiled: October 26, 2009Date of Patent: February 26, 2013Assignee: Siltronic AGInventors: Katsuhiko Nakai, Masayuki Fukuda
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Patent number: 8343618Abstract: A silicon wafer in which both occurrences of slip dislocation and warpage are suppressed in device manufacturing processes is a silicon wafer having BMDs having an octahedral shape, wherein BMDs located at a position below the silicon wafer surface to a depth of 20 ?m and having a diagonal length of 200 nm or more are present at a concentration of ?2×109/cm3, and BMDs located at a position below a depth ?50 ?m have a diagonal length of ?10 nm to ?50 nm and a concentration of ?1×1012/cm3.Type: GrantFiled: December 15, 2009Date of Patent: January 1, 2013Assignee: Siltronic AGInventors: Masayuki Fukuda, Katsuhiko Nakai
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Patent number: 8229320Abstract: An electrophotographic image forming apparatus to which a cartridge is detachably mountable to form an image on a recording medium, the electrophotographic image forming apparatus including: a mounting portion to which the cartridge is detachably mountable; a cartridge holding member which holds the cartridge to move the cartridge to the mounting portion; a lock member which releasably locks the cartridge to the cartridge holding member; and a lock releasing member which releases the lock of the cartridge to the cartridge holding member by the lock member after the cartridge holding member moves the cartridge to the mounting portion.Type: GrantFiled: May 9, 2008Date of Patent: July 24, 2012Assignee: Canon Kabushiki KaishaInventors: Eiichiro Kimizuka, Masayuki Fukuda, Takahito Ueno
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Publication number: 20120107225Abstract: The present invention provides a titanium-based material for a bio-implant having a fourth generation function given thereto, by a method for producing a titanium-based material for a bio-implant having a zinc functional group, wherein the method comprises a soaking step in which a base material made of titanium and an alloy thereof is soaked in an alkali solution containing a zinc hydroxide complex.Type: ApplicationFiled: June 22, 2010Publication date: May 3, 2012Applicant: AKITA UNIVERSITYInventors: Osamu Yamamoto, Masayuki Fukuda
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Patent number: 8141874Abstract: A sheet conveying apparatus has a pair of conveying rotary members for conveying a sheet, an openable and closable conveying guide for guiding the sheet conveyed by the pair of conveying rotary members, a conveying path, which is disposed on a downstream side of the conveying guide, on which the sheet guide passes, a discharging portion on which the sheet having passed on the conveying path and discharged is stacked, and an obstructing member for obstructing the entrance of the conveying path. In a state in which the conveying guide is closed, the sheet conveyed by the pair of conveying rotary members is guided to the conveying path by the conveying guide. In a state in which the conveying guide is closed, the obstructing member is retracted from the entrance of the conveying path, and in a state in which the conveying guide is opened, the obstructing member obstructs the entrance of the conveying path.Type: GrantFiled: April 5, 2010Date of Patent: March 27, 2012Assignee: Canon Kabushiki KaishaInventors: Masayuki Fukuda, Kenji Ninomiya
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Patent number: 8032058Abstract: An electrophotographic image forming apparatus which allows a locking operation to be easily performed even when a lock mechanism for a developing cartridge is provided at a position hard of access for a user. The electrophotographic image forming apparatus includes a cartridge door opening and closing an opening portion for allowing mounting and detachment of the developing cartridge, a lock member which locks the developing cartridge mounted to a mounting portion so that the developing cartridge may not be detached from the mounting portion and which is rotatable to release the lock, and a link member which abuts the lock member and which can rotate to effect switching between the lock and lock releasing of the lock member, with an end portion of the link member being situated in the vicinity of the opening portion.Type: GrantFiled: May 7, 2008Date of Patent: October 4, 2011Assignee: Canon Kabushiki KaishaInventors: Masayuki Fukuda, Eiichiro Kimizuka
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Publication number: 20110192342Abstract: Dislocation-free single-crystal silicon is manufactured by the Czochralski method, wherein silicon which does not contain particles with an average particle diameter smaller than 250 ?m, is used as raw material for melting.Type: ApplicationFiled: January 31, 2011Publication date: August 11, 2011Applicant: SILTRONIC AGInventors: Masayuki Fukuda, Jun Fukuda, Yoshitomo Fukuda
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Publication number: 20100187756Abstract: A sheet conveying apparatus has a pair of conveying rotary members for conveying a sheet, an openable and closable conveying guide for guiding the sheet conveyed by the pair of conveying rotary members, a conveying path, which is disposed on a downstream side of the conveying guide, on which the sheet guide passes, a discharging portion on which the sheet having passed on the conveying path and discharged is stacked, and an obstructing member for obstructing the entrance of the conveying path. In a state in which the conveying guide is closed, the sheet conveyed by the pair of conveying rotary members is guided to the conveying path by the conveying guide. In a state in which the conveying guide is closed, the obstructing member is retracted from the entrance of the conveying path, and in a state in which the conveying guide is opened, the obstructing member obstructs the entrance of the conveying path.Type: ApplicationFiled: April 5, 2010Publication date: July 29, 2010Applicant: CANON KABUSHIKI KAISHAInventors: MASAYUKI FUKUDA, KENJI NINOMIYA
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Publication number: 20100163807Abstract: A silicon wafer in which both occurrences of slip dislocation and warpage are suppressed in device manufacturing processes is a silicon wafer having BMDs having an octahedral shape, wherein BMDs located at a position below the silicon wafer surface to a depth of 20 ?m and having a diagonal length of 200 nm or more are present at a concentration of ?2×109/cm3, and BMDs located at a position below a depth ?50 ?m have a diagonal length of ?10 nm to ?50 nm and a concentration of ?1×1012/cm3.Type: ApplicationFiled: December 15, 2009Publication date: July 1, 2010Applicant: SILTRONIC AGInventors: Masayuki Fukuda, Katsuhiko Nakai
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Publication number: 20100155903Abstract: An annealed wafer having enhanced gettering effects for Cu is produced by heating a silicon substrate containing a nitrogen concentration of 5×1014 to 1×1016/cm3, a carbon concentration of 1×1015 to 5×1016/cm3, and an oxygen concentration of 6×1017 to 11×1017/cm3 at a temperature of 650 to 800° C. for a time ?4 hours, and subjecting the heated substrate to argon annealing at a temperature of 1100 to 1250° C., wherein internal stacking fault density after annealing is ?5×108/cm3.Type: ApplicationFiled: December 9, 2009Publication date: June 24, 2010Applicant: Siltronic AGInventors: Kazunori Ishisaka, Katsuhiko Nakai, Masayuki Fukuda
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Patent number: 7711287Abstract: A cartridge that can be accurately positioned and stably held with respect to a main body of an electrophotographic image forming apparatus without causing a deterioration in operability for mounting and detaching the cartridge from the apparatus main body even if a reduction in cost and a reduction in size of the apparatus main body are realized and an electrophotographic image forming apparatus including such cartridge. The cartridge is a drum cartridge that has an electrophotographic photosensitive drum and is detachably mountable to the apparatus main body. The drum cartridge has lock portions that lock on both side plates of the apparatus main body at both ends in a longitudinal direction of the drum cartridge such that the apparatus main body follows the drum cartridge mounted on the apparatus main body.Type: GrantFiled: May 12, 2008Date of Patent: May 4, 2010Assignee: Canon Kabushiki KaishaInventors: Eiichiro Kimizuka, Masayuki Fukuda, Shigeo Miyabe
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Patent number: 7699312Abstract: A sheet conveying apparatus has a pair of conveying rotary members for conveying a sheet, an openable and closable conveying guide for guiding the sheet conveyed by the pair of conveying rotary members, a conveying path, which is disposed on a downstream side of the conveying guide, on which the sheet guide passes, a discharging portion on which the sheet having passed on the conveying path and discharged is stacked, and an obstructing member for obstructing the entrance of the conveying path. In a state in which the conveying guide is closed, the sheet conveyed by the pair of conveying rotary members is guided to the conveying path by the conveying guide. In a state in which the conveying guide is closed, the obstructing member is retracted from the entrance of the conveying path, and in a state in which the conveying guide is opened, the obstructing member obstructs the entrance of the conveying path.Type: GrantFiled: February 23, 2006Date of Patent: April 20, 2010Assignee: Canon Kabushiki KaishaInventors: Masayuki Fukuda, Kenji Ninomiya
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Publication number: 20100047563Abstract: Silicon wafers wherein slip dislocations and warpages during device production are suppressed, contain BMDs with an octahedral shape, and of BMDs at a depth greater than 50 ?m from the surface of the wafer, the density of BMDs with diagonal size of 10 nm to 50 nm is ?1×1012/cm3, and the density of BSFs is ?1×108/cm3. The present silicon wafers preferably have an interstitial oxygen concentration of 4×1017 atoms/cm3 to 6×1017 atoms/cm3, and a density of BMDs with diagonal size of ?200 nm of not more than 1×107/cm3.Type: ApplicationFiled: October 26, 2009Publication date: February 25, 2010Applicant: SILTRONIC AGInventors: Katsuhiko Nakai, Masayuki Fukuda
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Publication number: 20080286003Abstract: An electrophotographic image forming apparatus which allows a locking operation to be easily performed even when a lock mechanism for a developing cartridge is provided at a position hard of access for a user. The electrophotographic image forming apparatus includes a cartridge door opening and closing an opening portion for allowing mounting and detachment of the developing cartridge, a lock member which locks the developing cartridge mounted to a mounting portion so that the developing cartridge may not be detached from the mounting portion and which is rotatable to release the lock, and a link member which abuts the lock member and which can rotate to effect switching between the lock and lock releasing of the lock member, with an end portion of the link member being situated in the vicinity of the opening portion.Type: ApplicationFiled: May 7, 2008Publication date: November 20, 2008Applicant: CANON KABUSHIKI KAISHAInventors: Masayuki Fukuda, Eiichiro Kimizuka
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Publication number: 20080286004Abstract: A cartridge that can be accurately positioned and stably held with respect to a main body of an electrophotographic image forming apparatus without deteriorating operability for mounting and detaching the cartridge from the apparatus main body even if a reduction in cost and a reduction in size of the apparatus main body are realized and an electrophotographic image forming apparatus including the cartridge. The cartridge is a drum cartridge that has an electrophotographic photosensitive drum and is detachably mountable to the apparatus main body. The drum cartridge has lock portions that lock on both side plates of the apparatus main body at both ends in a longitudinal direction of the drum cartridge such that the apparatus main body follows the drum cartridge mounted on the apparatus main body.Type: ApplicationFiled: May 12, 2008Publication date: November 20, 2008Applicant: CANON KABUSHIKI KAISHAInventors: Eiichiro Kimizuka, Masayuki Fukuda, Shigeo Miyabe
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Publication number: 20080286000Abstract: An electrophotographic image forming apparatus to which a cartridge is detachably mountable to form an image on a recording medium, the electrophotographic image forming apparatus including: a mounting portion to which the cartridge is detachably mountable; a cartridge holding member which holds the cartridge to move the cartridge to the mounting portion; a lock member which releasably locks the cartridge to the cartridge holding member; and a lock releasing member which releases the lock of the cartridge to the cartridge holding member by the lock member after the cartridge holding member moves the cartridge to the mounting portion.Type: ApplicationFiled: May 9, 2008Publication date: November 20, 2008Applicant: CANON KABUSHIKI KAISHAInventors: Eiichiro Kimizuka, Masayuki Fukuda, Takahito Ueno
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Patent number: 7323128Abstract: An in-mold foam molding equipment, includes at least a movable partition member for dividing a molding space formed by a pair of molds into divided spaces, wherein the partition member is composed of a plurality of divisional partition members, wherein each of the divisional partition members individually has a retreat positioning protrusion and a insert positioning protrusion, and the divisional partition members are installed in a slider, wherein the slider is configured to move between the retreat positioning protrusions and the insert positioning protrusions, and the divisional partition members are configured to be movable in cooperation with the motion of the slider moving by contacting with the retreat positioning protrusions or the insert positioning protrusions, so that the divisional partition members divide the molding space into divided spaces, and therefore an integral molded article suppressed in occurrence of large protrusions and deep holes can be manufactured.Type: GrantFiled: February 5, 2007Date of Patent: January 29, 2008Assignee: JSP CorporationInventors: Seishiro Murata, Satoru Shioya, Masayuki Fukuda
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Publication number: 20070126139Abstract: An in-mold foam molding equipment, includes at least a movable partition member for dividing a molding space formed by a pair of molds into divided spaces, wherein the partition member is composed of a plurality of divisional partition members, wherein each of the divisional partition members individually has a retreat positioning protrusion and a insert positioning protrusion, and the divisional partition members are installed in a slider, wherein the slider is configured to move between the retreat positioning protrusions and the insert positioning protrusions, and the divisional partition members are configured to be movable in cooperation with the motion of the slider moving by contacting with the retreat positioning protrusions or the insert positioning protrusions, so that the divisional partition members divide the molding space into divided spaces, and therefore an integral molded article suppressed in occurrence of large protrusions and deep holes can be manufactured.Type: ApplicationFiled: February 5, 2007Publication date: June 7, 2007Applicant: JSP CORPORATIONInventors: Seishiro Murata, Satoru Shioya, Masayuki Fukuda
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Patent number: 7192265Abstract: An in-mold foam molding equipment, includes at least a movable partition member for dividing a molding space formed by a pair of molds into divided spaces, wherein the partition member is composed of a plurality of divisional partition members, wherein each of the divisional partition members individually has a retreat positioning protrusion and a insert positioning protrusion, and the divisional partition members are installed in a slider, wherein the slider is configured to move between the retreat positioning protrusions and the insert positioning protrusions, and the divisional partition members are configured to be movable in cooperation with the motion of the slider moving by contacting with the retreat positioning protrusions or the insert positioning protrusions, so that the divisional partition members divide the molding space into divided spaces, and therefore an integral molded article suppressed in occurrence of large protrusions and deep holes can be manufactured.Type: GrantFiled: May 19, 2004Date of Patent: March 20, 2007Assignee: JSP CorporationInventors: Seishiro Murata, Satoru Shioya, Masayuki Fukuda
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Publication number: 20060192831Abstract: A sheet conveying apparatus has a pair of conveying rotary members for conveying a sheet, an openable and closable conveying guide for guiding the sheet conveyed by the pair of conveying rotary members, a conveying path, which is disposed on a downstream side of the conveying guide, on which the sheet guide passes, a discharging portion on which the sheet having passed on the conveying path and discharged is stacked, and an obstructing member for obstructing the entrance of the conveying path. In a state in which the conveying guide is closed, the sheet conveyed by the pair of conveying rotary members is guided to the conveying path by the conveying guide. In a state in which the conveying guide is closed, the obstructing member is retracted from the entrance of the conveying path, and in a state in which the conveying guide is opened, the obstructing member obstructs the entrance of the conveying path.Type: ApplicationFiled: February 23, 2006Publication date: August 31, 2006Applicant: CANON KABUSHIKI KAISHAInventors: Masayuki Fukuda, Kenji Ninomiya