Patents Assigned to Mitsubishi Plastics Industries, Limited
  • Patent number: 5560506
    Abstract: A method of making a bottle with a handle, wherein a synthetic resin parison is disposed in half-cylindrical molds with a handle body, which is blow-molded and at the same time integrated with the handle body, characterized in that the parison is disposed between the opened molds; the handle body is tacked to a face of matching faces of the half-cylindrical molds; the molds are closed; and the blow-molding is performed.
    Type: Grant
    Filed: May 23, 1994
    Date of Patent: October 1, 1996
    Assignee: Mitsubishi Plastics Industries Limited
    Inventors: Tateo Yanagisawa, Hisayoshi Yamada, Katsumi Sakamoto, Seiki Inagawa, Yukihide Umetsu, Takeshi Uchida, Hideyo Nakahara, Yoshiharu Fukumoto
  • Patent number: 5466499
    Abstract: A heat-shrinkable polystyrene tube made of a composition comprising, as main components, a block copolymer having styrene-type hydrocarbon blocks and conjugated diene-type hydrocarbon blocks, and a polymer containing a styrene-type hydrocarbon, wherein the conjugated diene-type blocks in the block copolymer constitute from 5 to 40 wt % of the entire composition.
    Type: Grant
    Filed: April 5, 1994
    Date of Patent: November 14, 1995
    Assignee: Mitsubishi Plastics Industries Limited
    Inventors: Jun Takagi, Hirotsugu Fujita
  • Patent number: 5441804
    Abstract: A magneto-optical recording medium has on the substrate a recording layer made of a multi-layered metallic thin film comprising a first unit layer and a second unit layer. The first unit layer is composed of (Fe.sub.x Co.sub.1-x).sub.1-y M.sub.y where M represents at least one metal selected from the group consisting of Pt, Pd and Au, 0.5.ltoreq..times..ltoreq.1.0, and 0.01.ltoreq.y.ltoreq.0.1. The second unit layer is composed of a% least one metal selected from the group consisting of Nd, Dy, Gd and Tb. The first and second unit layers are superimposed alternately one on another.
    Type: Grant
    Filed: August 4, 1994
    Date of Patent: August 15, 1995
    Assignee: Mitsubishi Plastics Industries Limited
    Inventors: Toshiyuki Akitake, Shingetsu Yamada
  • Patent number: 5403454
    Abstract: A heat-shrinkable polyester tube, which is a tube having heat shrinkability imparted by subjecting an unstretched tube made of a thermoplastic polyester resin to tubular stretching, and which has a crystallinity of not higher than 20% and a shrinkage of more than 5% and not more than 26% in the longitudinal direction (MD) and a shrinkage of at least 25% in the radial direction (TD).
    Type: Grant
    Filed: July 18, 1994
    Date of Patent: April 4, 1995
    Assignee: Mitsubishi Plastics Industries Limited
    Inventors: Kazuo Taniguchi, Tetsuo Murakami
  • Patent number: 5368811
    Abstract: A heat-shrinkable polyester tube, which is a tube having heat shrinkability imparted by subjecting an unstretched tube made of a thermoplastic polyester resin to tubular stretching, and which has a crystallinity of not higher than 20% and a shrinkage of more than 5% and not more than 26% in the longitudinal direction (MD) and a shrinkage of at least 25% in the radial direction (TD).
    Type: Grant
    Filed: February 12, 1993
    Date of Patent: November 29, 1994
    Assignee: Mitsubishi Plastics Industries Limited
    Inventors: Kazuo Taniguchi, Tetsuo Murakami
  • Patent number: 5338503
    Abstract: A method of making a bottle with a handle, wherein a synthetic-resin parison is disposed in half-cylindrical molds with a handle body, which is blow-molded and at the same time integrated with the handle body, characterized in that the parison is disposed between the opened molds; the handle body is tacked to a face of matching faces of the half-cylindrical molds; the molds are closed; and the blow-molding is performed.
    Type: Grant
    Filed: May 5, 1993
    Date of Patent: August 16, 1994
    Assignee: Mitsubishi Plastics Industries Limited
    Inventors: Tateo Yanagisawa, Hisayoshi Yamada, Katsumi Sakamoto, Seiki Inagawa, Yukihide Umetsu, Takeshi Uchida, Hideyo Nakahara, Yoshiharu Fukumoto
  • Patent number: 5339239
    Abstract: An information collecting system comprises an access terminal connectable to a data base through a network and a host computer, an IC memory card adapted for removable insertion into the access terminal, and a portable personal terminal. Requests for an item of information, from a customer, are inputted and recorded in the IC memory card using the personal terminal and the IC memory card is inserted into the access terminal. The request for information is transmitted through the access terminal to the data base and the requested information, transmitted from the data base, is stored in the IC memory card. Thereafter, the IC memory card, storing the information, is inserted into the personal terminal whereby the requested information is displayed on a display formed in the personal terminal.
    Type: Grant
    Filed: October 11, 1990
    Date of Patent: August 16, 1994
    Assignees: Mitsubishi Plastics Industries Limited, Hudson Soft Co., Ltd., JAL Data Communication & Systems Co., Ltd.
    Inventors: Toshiyuki Manabe, Osamu Murakami, Keiichi Takeuchi, Junichi Matsuura
  • Patent number: 5302435
    Abstract: A plastic sheet having a groove as a ruled line in at least one surface of a plastic sheet. The groove is composed of a cut portion or a deep recess portion and a shallow recess portion in the longitudinal direction of the groove, and chamfered portions having a radius of curvature of 0.05-1 mm are formed at both ends in the longitudinal direction of the bottom of the shallow recess portion.
    Type: Grant
    Filed: November 18, 1992
    Date of Patent: April 12, 1994
    Assignee: Mitsubishi Plastics Industries Limited
    Inventor: Tadashi Hashimoto
  • Patent number: 5262376
    Abstract: A reversible heat-sensitive recording material comprising a polymer resin matrix material and organic low molecular weight compounds dispersed in the matrix material, wherein as the low molecular weight compounds, (A) at least one of higher ketones having at least 15 carbon atoms and (B) at least one of aliphatic saturated dicarboxylic acids having at least 12 carbon atoms, are used in combination at a weight ratio of (A) to (B) within a range of from 98:2 to 30:70.
    Type: Grant
    Filed: December 15, 1992
    Date of Patent: November 16, 1993
    Assignee: Mitsubishi Plastics Industries Limited
    Inventor: Hiroshi Higashi
  • Patent number: 5108676
    Abstract: A method of forming a plastic plate includes melt extruding a thermoplastic resin containing a flake-like inorganic filler with an extruder into a former while a back pressure is applied to the extruded thermoplastic resin to thereby form it into a plate like body. The molten resin is extruded from at least one extruder into a channel or channels corresponding to the extruders which are formed in an adapter. The molten resin is fed to a cavity having at least one partition plate, formed in the former which is communicatively connected to the adapter so that a molten resin stream or streams introduced from the channel or channels are respectively divided and developed into at least two plate like bodies, and the plate-like bodies are merged in an overlapping state, followed by heat-bonding them.
    Type: Grant
    Filed: April 10, 1991
    Date of Patent: April 28, 1992
    Assignee: Mitsubishi Plastics Industries Limited
    Inventors: Tatsuya Hayashi, Takao Yamagishi
  • Patent number: 5076990
    Abstract: A method for recording and erasing a visible image on a card having a recording area with a smooth surface of a synthetic resin, which includes a step of subjecting the smooth surface in the recording area to frosting treatment at a temperature within a range of from the glass transition temperature to the melting point of the synthetic resin, to form a frosted surface having a strain, and step of defrosting the frosted surface by heating it at a temperature higher than the temperature for the frosting treatment, to return it to a smooth surface, whereby a visible image is formed in the recording area by the contrast between the frosted surface and the smooth surface.
    Type: Grant
    Filed: November 28, 1989
    Date of Patent: December 31, 1991
    Assignee: Mitsubishi Plastics Industries Limited
    Inventor: Masami Kitamura
  • Patent number: 5076776
    Abstract: An annular die for a lamination product comprises a center core portion 2, four circular-plate-like rings 1 arranged around the center core portion in the vertical direction so as to form a resin passage, which is communicated with a die lip 7, at the inner surface of the circular-plate-like rings, wherein openings for feeding resin are formed so as to open at the outer circumferential portions of mating surfaces 11 of the circular-plate-like rings; manifolds 5 are formed in either one of the mating surfaces of the rings so as to extend from the opening 4 in a spiral form, the depth of the manifolds being gradually decreased toward the inside of the mating surfaces; and a final resin-flowing area 51 is formed to communicate the manifolds 5 with the resin passage.
    Type: Grant
    Filed: August 16, 1990
    Date of Patent: December 31, 1991
    Assignee: Mitsubishi Plastics Industries Limited
    Inventors: Takao Yamada, Yoshiaki Higuchi
  • Patent number: 5024891
    Abstract: A polyamide resin-metal laminate comprising a metal substrate having a heat-treated epoxy resin coating layer on its surface and a polyamide resin laminated on the coating layer of the substrate, said coating layer having the following surface analytical spectrum values as measured by electron spectroscopy for chemical analysis (ESCA method):(1) Relative elemental content of carbon element (C.sub.1s spectrum): at least 50 atomic %,(2) Relative contents based on the total content of C.dbd.O, C--O, C.dbd.C--C.dbd.C, CH and C--C functional groups of C.sub.1s spectrum, as determined by the respective waveform analyses: C.dbd.O group: at least 4.0 atomic %, and C--O group: at most 25 atomic %.
    Type: Grant
    Filed: September 19, 1989
    Date of Patent: June 18, 1991
    Assignee: Mitsubishi Plastics Industries limited
    Inventors: Norio Yoshiga, Masahiro Kawamura, Hiroshi Nonoyama
  • Patent number: 4976289
    Abstract: A flat strip-like metallic material having both surfaces coated with a first synthetic resin layer is passed between plural pairs of upper and lower rollers so that a U-shaped recess is formed at the central portion in the longitudinal direction of the strip material and ring-like projection at both edges of the strip material. Then, the strip material is bent into a spiral form. The spirally wound strip material is passed to a transferring means and first, second and third extruders to extrude molten resin and first, second and third pressing rollers operating in association with the repsective extruders, whereby a second synthetic resin layer is formed at the outer circumferential portion of the adjoining edges of the sprially wound strip material, a third synthetic resin layer is formed on the back side of the recess portion of the same, and a fourth synthetic resin layer is formed on the outer circumferential surface of the recess portion and the adjoining edges of the spirally wound strip material.
    Type: Grant
    Filed: June 7, 1989
    Date of Patent: December 11, 1990
    Assignee: Mitsubishi Plastics Industries Limited
    Inventors: Noboru Umemori, Osamu Kouda, Yukio Horii
  • Patent number: 4964522
    Abstract: A thermoplastic blown bottle with a handle comprises a bottle body with a concave portion at its upper circumferential part and a handle attached to the concave portion, wherein the handle has a grip portion in an elongated form, fitting parts extending laterally from the both ends of the grip portion, and projections extending outwardly from the end portion of the fitting parts to be engaged with the innermost part of the concave portion so as to fix the handle.
    Type: Grant
    Filed: July 26, 1989
    Date of Patent: October 23, 1990
    Assignees: Mitsubishi Plastics Industries Limited, Kikkoman Corporation
    Inventors: Yukihide Umetsu, Hideo Hasegawa, Toshio Takahashi, Masayuki Miyagawa
  • Patent number: 4952133
    Abstract: In forming a blown bottle with a handle as a one-piece-molded product, a thermoplastic parison and a handle are previously held with a correct positional relation by respective holders and they are simultaneously moved in a blow mold to be subjected to blow molding.
    Type: Grant
    Filed: August 8, 1989
    Date of Patent: August 28, 1990
    Assignee: Mitsubishi Plastics Industries Limited
    Inventors: Hideo Hasegawa, Toshio Takahashi, Masayuki Miyagawa
  • Patent number: 4909978
    Abstract: A method of forming a blown bottle with a handle as a one-piece-molded product, wherein a thermoplastic parison and a handle are held in correct positional relationship by respective holders and are simultaneously moved in a blow mold to be subjected to blow molding. The parison is blow molded by injecting a pressurized fluid into it. Blow molding results in connection of the parison with the handle.
    Type: Grant
    Filed: May 12, 1988
    Date of Patent: March 20, 1990
    Assignee: Mitsubishi Plastics Industries Limited
    Inventors: Hideo Hasegawa, Toshio Takahashi, Masayuki Miyagawa
  • Patent number: 4864711
    Abstract: A method of producing a lined Hume pipe wherein an inner surface of a Hume pipe having a large-diameter socket at one end thereof and a spigot at the other end is covered with a synthetic resin pipe.
    Type: Grant
    Filed: May 24, 1988
    Date of Patent: September 12, 1989
    Assignees: Mitsubishi Plastics Industries Limited, Haneda Humepipe Co., Ltd.
    Inventor: Sueo Yokota
  • Patent number: 4769270
    Abstract: A substrate for a printed circuit board, comprising a metal core plate having apertures and an inorganic fiber cloth impregnated with a heat resistant thermoplastic resin, coated thereon, wherein said apertures are filled with a mixture of said resin and an inorganic filler.
    Type: Grant
    Filed: April 23, 1987
    Date of Patent: September 6, 1988
    Assignee: Mitsubishi Plastics Industries Limited
    Inventors: Hiroshi Nagamatsu, Kaname Iwasaki
  • Patent number: D318229
    Type: Grant
    Filed: April 26, 1988
    Date of Patent: July 16, 1991
    Assignees: Mitsubishi Plastics Industries Limited, Kikkoman Corporation
    Inventor: Yukihide Umetsu