Patents by Inventor Yoshikichi Teramoto
Yoshikichi Teramoto 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: 8283031Abstract: A semiconductive film formed from a resin composition comprising poly(ether ether ketone) and a conductive filler, wherein the average value of its thickness is 30 to 250 ?m, the maximum value of the thickness is 1 to 1.3 times as much as the minimum value thereof, the average value of its volume resistivity is 1.0×102 to 1.0×1014 ?cm, the maximum value of the volume resistivity is 1 to 30 times as much as the minimum value thereof, and the number of reciprocating folds as determined in accordance with the testing method for folding endurance is at least 5,000 times, and a production process thereof.Type: GrantFiled: October 1, 2004Date of Patent: October 9, 2012Assignee: Kureha CorporationInventors: Hideki Kitamura, Yoshikichi Teramoto, Kazuyuki Suzuki, Naomitsu Nishihata, Yasuhiro Suzuki
-
Publication number: 20110091756Abstract: In a lithium ion battery, including: a battery case; and a wound electrode body formed by attaching an unwinding prevention tape to a circumference of a wound electrode structure which is formed by winding a laminate of a tape-form negative electrode and a tape-form positive electrode together with a tape-form separator interposed therebetween, and a non-aqueous electrolytic solution, sealed up together within the battery case; the unwinding prevention tape is formed of a composite material of a vinylidene fluoride resin and an aromatic polyester resin. As a result, it is possible to provide a lithium ion battery which can stably prevent the unwinding of the wound electrode structure and a decrease of power even under a high-temperature service condition as encountered in a large-power use, and also such a wound electrode body for the lithium ion battery.Type: ApplicationFiled: May 12, 2009Publication date: April 21, 2011Applicant: KUREHA CORPORATIONInventors: Kazuyuki Suzuki, Mayumi Sugahara, Junya Yamamoto, Hideki Kitamura, Yoshikichi Teramoto
-
Publication number: 20070020450Abstract: A semiconductive film formed from a resin composition comprising poly(ether ether ketone) and a conductive filler, wherein the average value of its thickness is 30 to 250 ?m, the maximum value of the thickness is 1 to 1.3 times as much as the minimum value thereof, the average value of its volume resistivity is 1.0×102 to 1.0×1014 ?cm, the maximum value of the volume resistivity is 1 to 30 times as much as the minimum value thereof, and the number of reciprocating folds as determined in accordance with the testing method for folding endurance is at least 5,000 times, and a production process thereof.Type: ApplicationFiled: October 1, 2004Publication date: January 25, 2007Inventors: Hideki Kitamura, Yoshikichi Teramoto, Kazuyuki Suzuki, Naomitsu Nishihata, Yasuhiro Suzuki
-
Patent number: 6686427Abstract: A vinylidene fluoride polymer having good high-temperature coloring resistance is produced through suspension polymerization at 10-100° C. in a mixture solvent of 100 wt. parts of an aqueous medium and 10-50 wt. parts of a halogenated hydrocarbon solvent showing a good dissolving power to both a vinylidene fluoride monomer and a polymerization initiator and represented by a formula of: CX3CX2CHX2, wherein X is a fluorine or chlorine atom, and 7 X's include 4-6 fluorine atoms and 1-3 chlorine atoms. The vinylidene fluoride polymer is characterized by an elutable total organic carbon content in pure water at 95° C. of at most 1.1 &mgr;g/cm2.Type: GrantFiled: January 25, 2002Date of Patent: February 3, 2004Assignee: Kureha Chemical Industry Company, LimitedInventors: Takumi Katsurao, Toshio Hosokawa, Katsuo Horie, Yoshikichi Teramoto, Aisaku Nagai
-
Patent number: 6610766Abstract: The invention relates to polyvinylidene fluoride resin compositions comprising 100 parts by weight of a polyvinylidene fluoride resin, and 0.03 to 10 parts by weight of at least one compound selected from the group consisting of alkyl quaternary ammonium sulfates and alkyl quaternary ammonium sulfites.Type: GrantFiled: March 11, 1999Date of Patent: August 26, 2003Assignee: Kureha Kagaku Kogyo K.K.Inventors: Hideki Kitamura, Satoru Matsunaga, Yoshikichi Teramoto
-
Publication number: 20020143103Abstract: A vinylidene fluoride polymer having good high-temperature coloring resistance is produced through suspension polymerization at 10-100° C. in a mixture solvent of 100 wt. parts of an aqueous medium and 10-50 wt.Type: ApplicationFiled: January 25, 2002Publication date: October 3, 2002Inventors: Takumi Katsurao, Toshio Hosokawa, Katsuo Horie, Yoshikichi Teramoto, Aisaku Nagai
-
Patent number: 6238775Abstract: The invention relates to a transfer material-carrying member formed from a resin composition comprising at least two resins selected from the group consisting of (A) a polyester resin containing a predominant repeating unit composed of ethylene terephthalate and having a reduced viscosity of at least 0.9 dl/g, (B) a polyamide resin, and (C) a polycarbonate resin, wherein the compositional proportions by mass % of the respective resins are included within a range of a pentagon having points (98, 2, 0), (85, 15, 0), (65, 15, 20), (72, 0, 28) and (90, 0, 10) as vertexes when represented by a triangular coordinate indicated in the above order (A, B, C). The member has excellent mechanical fatigue endurance, tensile elongation at break, mechanical endurance, stiffness and the like and a high specific dielectric constant and makes it possible to lower voltage required upon repeated charging and discharging.Type: GrantFiled: March 3, 1999Date of Patent: May 29, 2001Assignee: Kureha Kagaku Kogyo K.K.Inventors: Yoshikichi Teramoto, Hideki Kitamura, Satoru Matsunaga
-
Patent number: 6136494Abstract: A transfer sheet comprising not less that 75% by mass of a polycarbonate resin, and having a ratio of an infrared absorbency at a wave-number of 155 mm.sup.-1 to that at a wave-number of 160 mm.sup.-1 of not less than 0.02 and less than 0.3, a melting viscosity of not less than 2,500 Pa.multidot.s when measured at 280.degree. C. by a Koka-type flow tester and thickness of 130 to 250 .mu.m. The transfer sheet can satisfy requirements of a mechanical durability, flame retardant properties and a modability simultaneously.Type: GrantFiled: March 6, 1997Date of Patent: October 24, 2000Assignee: Kureha Kagaku Kogyo Kabushiki KaishaInventors: Yoshikichi Teramoto, Tooru Misawa, Satoru Matsunaga
-
Patent number: 5833070Abstract: A stretched PCTFE (polychlorotrifluoroethylene) film is provided with a good moisture-proofness (low moisture permeability) even at a relatively small thickness and at a small crystallinity The film is characterized by a crystallinity A (%) of 15-75% and a moisture permeability B (mg/m.sup.2.day) at a film thickness of 20 .mu.m, satisfying a relationship of B/(100-A).ltoreq.3.0. The film may suitably be produced through a process characterized by a sequence of a relatively low-temperature melt-extrusion and a low temperature stretching. The film is suitably used for constituting moisture-proof packaged products, such as an EL device or a packaged drug product.Type: GrantFiled: June 2, 1997Date of Patent: November 10, 1998Assignee: Kureha Kagaku Kogyo Kabushiki KaishaInventors: Toshiya Mizuno, Yoshikichi Teramoto, Yasuhiro Tada
-
Patent number: 5612163Abstract: A transfer sheet for printing media of electrophotographic copying machines or printers comprises a polycarbonate-based resin or a composition containing not less than 75% by mass of a polycarbonate-based resin, and having characteristics that:the ratio of infrared absorbance at the wave number of 155 mm.sup.-1 to that at 160 mm.sup.-1 of said sheet is 0.3 to 0.6;the melt viscosity at the shear rate of 200/sec at 280.degree. C. of said sheet is not less than 2,000 Pa.multidot.s; andthe thickness of said sheet is 130 to 250 .mu.m.Type: GrantFiled: April 5, 1996Date of Patent: March 18, 1997Assignee: Kureha Kagaku Kogyo Kabushiki KaishaInventors: Yoshikichi Teramoto, Tooru Misawa, Satoru Matsunaga
-
Patent number: 5286814Abstract: A heat-resistant stretched film is obtained by stretching a resin composition comprising 100 parts by weight of a poly(arylene sulfide) of a substantially linear structure and 5 to less than 100 parts by weight of a melt-stable poly(arylene thioether-ketone). The poly(arylene sulfide) has a melt viscosity of at least 1,000 poises as measured at 310.degree. C. and a shear rate of 200 sec.sup.-1. The poly(arylene thioether-ketone) has predominant recurring units of the formula ##STR1## wherein the --CO-- and --S-- groups are bonded in the para position to each other through the benzene ring, and has the following physical properties (a)-(c):(a) a melting point, Tm being 310.degree.-380.degree. C.;(b) a melt crystallization temperature, Tmc (420.degree. C./10 min) being at least 210.degree. C. and a residual melt crystallization enthalpy, .DELTA.Hmc (420.degree. C./10 min) being at least 10 J/g; and(c) a reduced viscosity being 0.3-2 dl/g at 25.degree. C. and a polymer concentration of 0.Type: GrantFiled: April 26, 1991Date of Patent: February 15, 1994Assignee: Kureha Kagaku Kogyo K. K.Inventors: Toshiya Mizuno, Yoshikichi Teramoto, Takeshi Saito, Juichi Wakabayashi, Yoshikatsu Satake, Ken Kashiwadate, Takayuki Katto
-
Patent number: 5223585Abstract: Disclosed herein is a heat-resistant film obtained by biaxially-stretching a composition which comprises (A) 50-90 parts by weight of a polyetheretherketone having predominant recurring units of the formula: ##STR1## and (B) 50-10 parts by weight of a substantially linear poly(arylene sulfide) having melt viscosity of at least 1,000 poises. A production process of such a heat-resistant film is also disclosed, which comprises biaxially stretching the above composition in a temperature range at least equal to the crystallization temperature (Tc) of the poly(arylene sulfide) but not higher than the crystallization temperature (Tc) of the polyetheretherketone.Type: GrantFiled: November 5, 1991Date of Patent: June 29, 1993Assignee: Kureha Kagaku Kogyo K. K.Inventors: Toshiya Mizuno, Yoshikichi Teramoto, Takeshi Saito, Juichi Wakabayashi
-
Patent number: 5115092Abstract: A poly(arylene sulfide) sheet excellent in planarity and smoothness is formed of a composition composed at least principally of a substantially linear, high molecular poly(arylene sulfide) having a melt viscosity of at least 1,000 poises. It has an elongation at break of at least 10% at 23.degree. C. and a Young's modulus of at least 5 kg/mm.sup.2 at 200.degree. C., and per area of 1 cm.times.2 cm on at least one of its surfaces, contains not more than 1 convex or concave whose angle of elevation or depression is at least 2.degree. and whose height or depth is at least 10 .mu.m. The sheet is produced by melting the composition, extruding the melt through a slit die, cooling and solidifying the extrudate into a sheet, preheating the sheet for 3-100 seconds in a temperature range of from a temperature 20.degree. C. lower than the glass transition temperature of the polymer to a temperature 25.degree. C.Type: GrantFiled: April 19, 1990Date of Patent: May 19, 1992Assignee: Kureha Kagaku KogyoInventors: Toshiya Mizuno, Yoshikichi Teramoto, Takeshi Saito, Juichi Wakabayashi
-
Patent number: 5100593Abstract: A poly(arylene sulfide) sheet excellent in planarity and smoothness is formed of a poly(arylene sulfide) having a melt viscosity, .eta..sup.* of 1,000-25,000 poises as measured at 310.degree. C. and a shear rate of 200 sec.sup.-1, and a melt crystallization temperature, Tc.sub.2 of 170.degree.-240.degree. C., wherein Tc.sub.2 is an exothermic peak temperature of crystallization which appears upon the measurement by a differential scanning calorimeter at a cooling rate of 10.degree. C./min after the polymer is heated from 23.degree. to 380.degree. C. at a rate of 10.degree. C./min and then held for 3 minutes at 380.degree. C. It has a surface roughness, Ra of 0.09 .mu.m or less on at least one side thereof and a degree of crystallization of at least 5%. Its number of flexings to break, Y satisfies the following equation (I):log Y.gtoreq.7.11-2.34 log t (I)wherein t means a thickness (.mu.m) of the sheet.Type: GrantFiled: January 10, 1991Date of Patent: March 31, 1992Assignee: Kureha Kagaku Kogyo K.K.Inventors: Toshiya Mizuno, Yoshikichi Teramoto, Juichi Wakabayashi, Takeshi Saito
-
Patent number: 5095078Abstract: Disclosed herein is a heat-resistant film obtained by biaxially-stretching a composition which comprises (A) 50-90 parts by weight of a polyetheretherketone having predominant recurring units of the formula: ##STR1## and (B) 50-10 parts by weight of a substantially linear poly(arylene sulfide) having melt viscosity of at least 1,000 poises. A production process of such a heat-resistant film is also disclosed, which comprises biaxially stretching the above composition in a temperature range at least equal to the crystallization temperature (Tc) of the poly(arylene sulfide) but not higher than the crystallization temperature (Tc) of the polyetheretherketone.Type: GrantFiled: April 13, 1990Date of Patent: March 10, 1992Assignee: Kureha Kagaku Kogyo K. K.Inventors: Toshiya Mizuno, Yoshikichi Teramoto, Takeshi Saito, Juichi Wakabayashi
-
Patent number: 5013823Abstract: A poly(arylene sulfide) sheet excellent in planarity and smoothness is formed of a poly(arylene sulfide) having a melt viscosity, .eta.* of 1,000-25,000 poises as measured at 310.degree. C. and a shear rate of 200 sec.sup.-1, and a melt crystallization temperature, Tc.sub.2 or 170.degree.-240.degree. C., wherein Tc.sub.2 is an exothermic peak temperature of crystallization which appears upon the measurement by a differential scanning calorimeter at a cooling rate of 10.degree. C./min after the polymer is heated from 23.degree. C. to 380.degree. C. at a rate of 10.degree. C./min and then held for 3 minutes at 380.degree. C. It has a surface roughness, Ra of 0.09 .mu.m or less on at least one side thereof and a degree of crystallization of at least 5%. Its number of flexings to break, Y satisfies the following equation (I):log Y.gtoreq.7.11-2.34log t (I)wherein t means a thickness (.mu.m) of the sheet.Type: GrantFiled: November 28, 1989Date of Patent: May 7, 1991Assignee: Kureha Kagaku Kogyo K.K.Inventors: Toshiya Mizuno, Yoshikichi Teramoto, Juichi Wakabayashi, Takeshi Saito
-
Patent number: 5006605Abstract: A biaxially-stretched film is made of a resin composition composed of 100 parts by weight of a substantially linear poly(arylene sulfide) having a melt viscosity of at least 1,000 poises and 2-25 parts by weight of a styrene-based resin. The film is produced by diluting a master batch, which has been prepared in advance and is composed of the poly(arylene sulfide) and styrene-based resin, with an additional supply of the poly(arylene sulfide) so as to prepare a resin composition containing the polystyrene-based resin in an amount of 2-25 parts by weight per 100 parts by weight of the poly(arylene sulfide), and then biaxially stretching the thus-prepared resin composition.Type: GrantFiled: August 31, 1989Date of Patent: April 9, 1991Assignee: Kureha Kagaku Kogyo K.K.Inventors: Toshiya Mizuno, Yoshikichi Teramoto, Takeshi Saito, Juichi Wakabayashi
-
Patent number: 4976908Abstract: A poly(arylene sulfide) sheet excellent in planarity and smoothness is formed of a composition composed at least principally of a substantially linear, high molecular poly(arylene sulfide) having a melt viscosity of at least 1,000 poises. It has an elongation at break of at least 10% at 23.degree. C. and a Young's modulus of at least 5 kg/mm.sup.2 at 200.degree. C., and per area of 1 cm.times.2 cm on at least one of its surfaces, contains not more than 1 convexity or concavity whose angle of elevation or depression is at least 2.degree. and whose height or depth is at least 10 .mu.m. The sheet is produced by melting the composition, extruding the melt through a slit die, cooling and solidifying the extrudate into a sheet, preheating the sheet for 3-100 seconds in a temperature range of from a temperature 20.degree. C. lower than the glass transition temperature of the polymer to a temperature 25.degree. C.Type: GrantFiled: December 28, 1988Date of Patent: December 11, 1990Assignee: Kureha Kagaku Kogyo K. K.Inventors: Toshiya Mizuno, Yoshikichi Teramoto, Takeshi Saito, Juichi Wakabayashi
-
Patent number: 4894419Abstract: A biaxially-stretched film is made of a resin composition composed of 100 parts by weight of a substantially linear poly(arylene sulfide) having a melt viscosity of at least 1,000 poises and 0.5-80 parts by weight of a styrene-based resin. The film is produced by diluting a master batch, which has been prepared in advance and is composed of the poly(arylene sulfide) and styrene-based resin, with an additional supply of the poly(arylene sulfide) so as to prepare a resin composition containing the polystyrene-based resin in an amount of 0.5-80 parts by weight per 100 parts by weight of the poly(arylene sulfide), and then biaxially stretching the thus-prepared resin composition.Type: GrantFiled: May 6, 1988Date of Patent: January 16, 1990Assignee: Kureha Kagaku Kogyo K.K.Inventors: Toshiya Mizuno, Yoshikichi Teramoto, Takeshi Saito, Juichi Wakabayashi
-
Patent number: 4731390Abstract: Disclosed herein is a biaxially stretched polyparaphenylene sulfide film comprising a resin composition consisting essentially of 100 parts by weight of a resin of polyparaphenylene sulfide series and from 0.3 to 15 parts by weight of poly(4-methylpentene-1).Type: GrantFiled: April 1, 1987Date of Patent: March 15, 1988Assignee: Kureha Kagaku Kogyo Kabushiki KaishaInventors: Toshiya Mizuno, Satoshi Hirose, Yoshikichi Teramoto