Patents by Inventor Minoru Isshiki
Minoru Isshiki 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).
-
Patent number: 6410642Abstract: An adhesive composition for bonding of semiconductor chips to their chip mounting component comprising a curable polymer composition that comprises a spherical filler having an average particle size from greater than 100 to 1,000 &mgr;m and an aspect ratio of 1 to 1.5. Semiconductor devices according to this invention are characterized in that a semiconductor chip therein is bonded to the mounting component for said chip by the aforementioned adhesive.Type: GrantFiled: June 20, 2000Date of Patent: June 25, 2002Assignee: Dow Corning Toray Silicone Co., Ltd.Inventors: Kimio Yamakawa, Minoru Isshiki, Katsutoshi Mine
-
Patent number: 6391081Abstract: A metal purification method and a metal refinement method in which metals of high purity can be easily refined and recovered without increasing the size of the purification and refining devices or complicating the operation. To this end, metals containing impurities are molten in a plasma arc containing active hydrogen to remove the impurities. If the metals contain ceramics inclusions, the metals are molten in a plasma arc containing active hydrogen and the ceramics inclusions are caused to float over the molten metal by exploiting the difference of density between the molten metal and the ceramics inclusions. The floating ceramics inclusions are decomposed and removed. For application to refining, the metal oxides are molten in a plasma arc containing active hydrogen so as to be reduced to metals.Type: GrantFiled: March 23, 2000Date of Patent: May 21, 2002Assignee: Sony CorporationInventors: Masahito Uchikoshi, Norio Yokoyama, Minoru Isshiki, Kouji Mimura
-
Patent number: 6384149Abstract: A polyvinyl chloride resin having an average particle diameter of not less than 150 &mgr;m and porosity at 31-1,011 psi of not less than 0.15 cc/g is suspended in an aqueous medium and chlorinated by blowing gaseous chlorine into the aqueous suspension. In this way, the floating resin formation during chlorination can be prevented and a chlorinated polyvinyl chloride resin excellent in free flow property and showing good resistance to initial discoloration and good thermal stability in heating and molding processes can be produced.Type: GrantFiled: December 19, 2000Date of Patent: May 7, 2002Assignee: Kaneka CorporationInventors: Tadashi Tadokoro, Takeyuki Suzuki, Minoru Isshiki
-
Patent number: 6379792Abstract: A silicone adhesive sheet for bonding a semiconductor chip to a chip attachment component comprising a crosslinkable silicone composition containing a silatrane derivative, and a method for manufacturing a silicone adhesive sheet by subjecting a crosslinkable silicone composition containing a silatrane derivative to a crosslinking reaction between backing materials that do not stick to the crosslinked product of said composition, where at least one of the backing materials has a larger dielectric constant than that of the crosslinked product. The present silicone adhesive sheet allows a semiconductor chip and a chip attachment component to be bonded in a short time at a relatively low temperature.Type: GrantFiled: July 6, 2000Date of Patent: April 30, 2002Assignee: Dow Corning Toray Silicone Co., Ltd.Inventors: Minoru Isshiki, Kimio Yamakawa, Yoshito Ushio, Ryoto Shima, Katsutoshi Mine
-
Publication number: 20020008123Abstract: A paste dispensing container comprising a cylindrical container having positioned therein a piston slidable along the walls of the container, a first end closed with a cap to seal paste within the container, a connecting portion at a second end of the container for connection with a pressurized fluid supply, and a leakage preventing cover having an air orifice covering the second end of the container. The paste dispensing container can be vacuum packaged in a gas-impermeable film for shipping and storage to prevent exposure of the paste contained therein to air.Type: ApplicationFiled: April 25, 2001Publication date: January 24, 2002Inventors: Kazumi Nakayoshi, Hiroki Ishikawa, Ryoto Shima, Junji Nakanishi, Tomoko Kato, Minoru Isshiki, Kimio Yamakawa
-
Publication number: 20010056152Abstract: A chlorinated vinyl chloride resin composition containing a chlorinated vinyl chloride resin which has a polymerization degree of from 600 to 1500 prior to chlorination and a chlorination degree of from 62 to 70 wt. %, an impact modifier, a stabilizer, a lubricant and titanium dioxide, wherein the content of zinc in titanium dioxide is 0.1% or less, which has improved thermal stability.Type: ApplicationFiled: December 3, 1998Publication date: December 27, 2001Inventors: TOSHIO OKUHARA, TAKEYUKI SUZUKI, MINORU ISSHIKI
-
Patent number: 6306950Abstract: A chlorinated vinyl chloride resin composition containing a chlorinated vinyl chloride resin which has a polymerization degree of from 600 to 1500 prior to chlorination arid a chlorination degree of from 62 to 70 wt. %, an impact modifier, a stabilizer, a lubricant and titanium dioxide, wherein the content of zinc in titanium dioxide is 0.1% or less, which has improved thermal stability.Type: GrantFiled: December 3, 1998Date of Patent: October 23, 2001Assignee: Kaneka CorporationInventors: Toshio Okuhara, Takeyuki Suzuki, Minoru Isshiki
-
Patent number: 6304000Abstract: A semiconductor device comprising a semiconductor chip, a semiconductor chip attachment site facing the semiconductor chip, and an adhesive silicone sheet bonding the semiconductor chip to the chip attachment site, wherein at least the surfaces of the sheet that connect the semiconductor chip and chip attachment site are a semi-cured product of a curable silicone composition.Type: GrantFiled: November 6, 2000Date of Patent: October 16, 2001Assignee: Dow Corning Toray Silicone Company, Ltd.Inventors: Minoru Isshiki, Katsutoshi Mine, Yoshiko Otani, Kimio Yamakawa
-
Publication number: 20010018124Abstract: A semiconductor device comprising a semiconductor element; a substrate; and a hot-melt adhesive sheet bonding the semiconductor element to the substrate, wherein the hot-melt adhesive sheet comprises a spacer having the form of a sheet and a hot melt adhesive on both sides of the spacer. A semiconductor device comprising a semiconductor element; a substrate; and a hot-melt adhesive sheet bonding the semiconductor element to the substrate, wherein the hot-melt adhesive sheet comprises a mixture of a hot melt adhesive and a spacer, wherein the adhesive is selected from a silicone-modified epoxy resin adhesive, a silicone adhesive, and a silicone-modified polyimide adhesive, and the spacer has the form of particles.Type: ApplicationFiled: March 21, 2001Publication date: August 30, 2001Inventors: Kimio Yamakawa, Minoru Isshiki, Yoshiko Otani, Katsutoshi Mine
-
Publication number: 20010014721Abstract: A polyvinyl chloride resin having an average particle diameter of not less than 150 &mgr;m and porosity at 31-1,011 psi of not less than 0.15 cc/g is suspended in an aqueous medium and chlorinated by blowing gaseous chlorine into the aqueous suspension. In this way, the floating resin formation during chlorination can be prevented and a chlorinated polyvinyl chloride resin excellent in free flow property and showing good resistance to initial discoloration and good thermal stability in heating and molding processes can be produced.Type: ApplicationFiled: December 19, 2000Publication date: August 16, 2001Applicant: Kaneka CorporationInventors: Tadashi Tadokoro, Takeyuki Suzuki, Minoru Isshiki
-
Patent number: 6242539Abstract: A polyvinyl chloride resin having an average particle diameter of not less than 150 &mgr;m and porosity at 31-1,011 psi of not less than 0.15 cc/g is suspended in an aqueous medium and chlorinated by blowing gaseous chlorine into the aqueous suspension. In this way, floating resin formation during chlorination can be prevented and a chlorinated polyvinyl chloride resin excellent in free flow property and showing good resistance to initial discoloration and good thermal stability in heating and molding processes can be produced.Type: GrantFiled: July 20, 1998Date of Patent: June 5, 2001Assignee: Kaneka CorporationInventors: Tadashi Tadokoro, Takeyuki Suzuki, Minoru Isshiki
-
Patent number: 6235862Abstract: An adhesive silicone sheet that enroute to its complete cure is inhibited from releasing low-viscosity silicone oil, that provides excellent bond between a semiconductor chip and the corresponding chip attachment site, and that as a consequence of these features supports the fabrication of highly reliable semiconductor devices, The adhesive silicone sheet is produced by a very efficient method which yields an adhesive silicone sheet having particularly good adhesiveness. The siliocone adhesive sheet is used to produce highly reliable semiconductor devices in which the semiconductor chip has been bonded to its attachment site using the subject adhesive silicone sheet.Type: GrantFiled: April 30, 1998Date of Patent: May 22, 2001Assignee: Dow Corning Toray Silicone Co., Ltd.Inventors: Minoru Isshiki, Katsutoshi Mine, Yoshiko Otani, Kimio Yamakawa
-
Patent number: 6231974Abstract: To provides a hot-melt adhesive sheet that provides very precise bonding and a stress-relaxation capacity. Also, to provide highly reliable semiconductor devices in which the semiconductor element is bonded to its element attachment site using this hot-melt adhesive sheet. Hot-melt adhesive sheet that characteristically has hot-melt adhesive on both surfaces of the sheet and spacer within the sheet. Also, semiconductor device characterized in that the semiconductor element therein is bonded to its element attachment site by the above-described hot-melt adhesive sheet.Type: GrantFiled: May 21, 1998Date of Patent: May 15, 2001Assignee: Dow Corning Toray Silicone Company, Ltd.Inventors: Kimio Yamakawa, Minoru Isshiki, Yoshiko Otani, Katsutoshi Mine
-
Patent number: 6225433Abstract: A curable silicon composition, comprising (A) 100 parts by weight of an organopolysiloxane containing silicon-bonded aryl groups and at least two alkenyl groups per molecule, and having a viscosity of from 0.01 to 1,000 Pa.s at 25° C., wherein the aryl groups comprise from 1 to 40 mole % of the total silicon-bonded organic groups in the organopolysiloxane; (B) an organopolysiloxane having a viscosity of from 0.001 to 10 Pa.s at 25° C. and containing at least 2 silicon-bonded hydrogen atoms per molecule, in a quantity sufficient to cure the composition; (C) a platinum catalyst in a quantity sufficient to cure the composition; and (D) 0.00001 to 100 parts by weight of an organopolysiloxane having a viscosity of from 0.01 to 10,000 Pa.s at 25° C.Type: GrantFiled: October 8, 1998Date of Patent: May 1, 2001Assignee: Dow Corning Toray Silicone Co., Ltd.Inventors: Minoru Isshiki, Katsutoshi Mine, Yoshiko Otani, Kimio Yamakawa
-
Patent number: 6197895Abstract: In producing chlorinated polyvinyl chloride resin having chlorination degree of 60-73% by weight, wherein polyvinyl chloride resin is suspended in an aqueous medium and chlorine gas is blown into said suspension under beam of a mercury lamp in the temperature range of 40-90° C., an organic peroxide compound having a 10 hour half-life in the range of 40-90° C. is added into the reaction vessel in the ratio of 0.01-1 parts to 100 parts of the polyvinyl chloride resin by weight before the chlorination reaction is started. By this method, the time for chlorination reaction can be shortened without sacrificing the initial coloring and the heat stability, whereby chlorinated polyvinyl chloride can be produced with significantly improved productivity.Type: GrantFiled: July 21, 1998Date of Patent: March 6, 2001Assignee: Kaneka CorporationInventors: Takeyuki Suzuki, Hiroaki Shiota, Minoru Isshiki
-
Patent number: 6140423Abstract: A chlorinated vinyl chloride resin composition, which is suitably used for the production of extruded pipes, containing a chlorinated vinyl chloride resin which has a polymerization degree of from 600 to 1500 prior to chlorination and a chlorination degree of from 62 to 70 wt. %, methyl methacrylate-butadiene-styrene copolymer particles having a butadiene content of less than 60 wt. % and a styrene content of larger than 30 wt. % in the whole particles, and a chlorinated polyethylene having a chlorine content of from 10 to 50 wt. %, in which the methyl methacrylate-butadiene-styrene copolymer particles have an average dispersed particle size of 2,000 angstroms or less in an extruded pipe produced from the composition.Type: GrantFiled: December 22, 1998Date of Patent: October 31, 2000Assignee: Kaneka CorporationInventors: Takeyuki Suzuki, Toshio Okuhara, Minoru Isshiki
-
Patent number: 6040395Abstract: This invention relates to a primer that improves adherence of a cured resin sealant to a cured silicone coating on an electrical element, wherein said primer is selected from the group consisting of:(i) a mixture of components (a) and (b),(ii) a reaction mixture of components (a) and (b),(iii) component (c),(iv) component (c) and a mixture of components (a) and (b), and(v) component (c) and a reaction mixture of components (a) and (b),where component (a) is silanol-functional organopolysiloxane; component (b) is epoxy-functional organoalkoxysilane; and component (c) is organopolysiloxane with the average unit formula: (R.sup.1 SiO.sub.3/2).sub.a (R.sup.2.sub.2 SiO.sub.2/2).sub.b (R.sup.2.sub.3 SiO.sub.1/2).sub.c (R.sup.3 O.sub.1/2).sub.dwhere R.sup.1 is an epoxy-functional monovalent organic group; each R.sup.2 is independently a monovalent hydrocarbon group, R.sup.Type: GrantFiled: May 21, 1999Date of Patent: March 21, 2000Assignee: Dow Corning Toray Silicone Co., Ltd.Inventors: Minoru Isshiki, Katsutoshi Mine, Kimio Yamakawa
-
Patent number: 5958176Abstract: An electrical part containing an electrical element, a cured silicone resin which has been treated with ultraviolet light, a cured sealing resin which has been integrally bonded to the UV treated silicone resin. The cured silicone resin is prepared from an addition reaction curable silicone composition which is a mixture or reaction mixture of (a) an organosiloxane which has silanol groups and (b) an alkoxysilane which has epoxy groups, and/or (c) an organosiloxane which can be expressed by the average unit formula(R.sup.1 SiO.sub.3/2).sub.a (R.sup.2.sub.2 SiO.sub.2/2).sub.b (R.sup.2.sub.3 SiO.sub.1/2).sub.c (R.sup.3 O.sub.1/2).sub.dwherein R.sup.1 is an epoxy group containing monovalent organic group R.sup.2 is monovalent hydrocarbon group, R.sup.3 is a hydrogen atom or an alkyl group with 1 to 4 carbon atoms, a, b and d are>0 and c is.gtoreq.0.Type: GrantFiled: July 24, 1997Date of Patent: September 28, 1999Assignee: Dow Corning Toray Silicone Co., Ltd.Inventors: Minoru Isshiki, Katsutoshi Mine, Kimio Yamakawa
-
Patent number: 5958515Abstract: This invention relates to a primer that improves adherence of a cured resin sealant to a cured silicone coating on an electrical element, wherein said primer is selected from the group consisting of:(i) a mixture of components (a) and (b),(ii) a reaction mixture of components (a) and (b),(iii) component (c),(iv) component (c) and a mixture of components (a) and (b), and(v) component (c) and a reaction mixture of components (a) and (b),where component (a) is silanol-functional organopolysiloxane; component (b) is epoxy-functional organoalkoxysilane; and component (c) is organopolysiloxane with the average unit formula:(R.sup.1 SiO.sub.3/2).sub.a (R.sup.2.sub.2 SiO.sub.2/2).sub.b (R.sup.2.sub.3 SiO.sub.1/2).sub.c (R.sup.3 O.sub.1/2).sub.dwhere R.sup.1 is an epoxy-functional monovalent organic group; each R.sup.2 is independently a monovalent hydrocarbon group, R.sup.Type: GrantFiled: September 3, 1997Date of Patent: September 28, 1999Assignee: Dow Corning Toray Silicone Co., LTD.Inventors: Minoru Isshiki, Katsutoshi Mine, Kimio Yamakawa
-
Patent number: 5872194Abstract: A curable composition containing a curable liquid-form organopolysiloxane composition and a curable liquid-form organic resin composition. The organic resin composition is contained as liquid particles in the organopolysiloxane composition. A cured product formed by curing the abovementioned curable liquid composition such that the cured product contains fine particles of a cured organic resin in a cured organopolysiloxane matrix. An electronic part which is covered by the cured product of the abovementioned curable liquid-form composition.Type: GrantFiled: July 8, 1997Date of Patent: February 16, 1999Assignee: Dow Corning Toray Silicone Co., Ltd.Inventors: Minoru Isshiki, Katsutoshi Mine, Kimio Yamakawa