Patents Assigned to Lumica Corporation
  • Patent number: 9772070
    Abstract: A chemical illuminant includes an outer case comprising sealable opposite ends situated in a lengthwise direction of the outer case; one ampoule housed in the outer case; a pair of compositions that emit light when mixed with each other; and a spacer arranged in the outer case, wherein one of the compositions is contained in a space formed inside of the outer case, but outside of the ampoule, and the other of the compositions is contained in the ampoule, a space in which the one of the compositions is contained is formed between the spacer and an inner surface of the outer case, at least one recess is formed at a periphery of the spacer, and the ampoule is supported in the recess.
    Type: Grant
    Filed: September 14, 2015
    Date of Patent: September 26, 2017
    Assignee: Lumica Corporation
    Inventors: Shiro Harada, Yuichi Komuro
  • Patent number: 8815128
    Abstract: Provided are an oxidizing liquid for a chemiluminescent material, which has a flash point higher than that of a conventional oxidizing liquid and also has high safety while maintaining the level of chemiluminescent performance; and a chemiluminescence system. Disclosed are an oxidizing liquid for a chemiluminescent material, which produces a chemiluminescence phenomenon when mixed with a fluorescent liquid containing an oxalic acid ester and a fluorescent substance, includes hydrogen peroxide and a solvent and has a flash point of 60° C. or higher, wherein a solvent to be contained in the oxidizing liquid is a mixture of at least two compounds other than phthalate compounds; and a chemiluminescence system using the oxidizing liquid and a fluorescent liquid.
    Type: Grant
    Filed: January 27, 2011
    Date of Patent: August 26, 2014
    Assignee: Lumica Corporation
    Inventors: Masataka Kobayashi, Hiroyuki Sano
  • Patent number: 8110145
    Abstract: It is intended to provide a method whereby residual detergent (surfactant) can be conveniently and accurately detected in the step of washing or rinsing dishes or clothes, and a test device usable in examining the rinsed conditions. Namely, a method characterized by comprising bringing a test substance with a composition (test agent) comprising an oxalic acid ester, a fluorescent substance, hydrogen peroxide and a strong acid and thus easily detecting the residual detergent sticking to the surface of the test subject from the chemiluminescence thus caused; and a test device which is most suitable for storing the test agent as described above.
    Type: Grant
    Filed: April 21, 2011
    Date of Patent: February 7, 2012
    Assignee: Lumica Corporation
    Inventor: Shiro Harada
  • Patent number: 7955860
    Abstract: It is intended to provide a method whereby residual detergent (surfactant) can be conveniently and accurately detected in the step of washing or rinsing dishes or clothes, and a test device usable in examining the rinsed conditions. Namely, a method characterized by comprising bringing a test substance with a composition (test agent) comprising an oxalic acid ester, a fluorescent substance, hydrogen peroxide and a strong acid and thus easily detecting the residual detergent sticking to the surface of the test subject from the chemiluminescence thus caused; and a test device which is most suitable for storing the test agent as described above.
    Type: Grant
    Filed: December 29, 2006
    Date of Patent: June 7, 2011
    Assignee: Lumica Corporation
    Inventor: Shiro Harada
  • Patent number: 7833111
    Abstract: A light-emitting golf ball is provided. The light-emitting golf ball is characterized in that hemispherical first hollow portions extend from the surface toward the center of a core, second hollow portions having a diameter less than that of the first hollow portions extend from bottom zones of the first hollow portions toward the center of the core, narrow holes extend through the core from the second hollow portions to portions of the core that are opposed to the second hollow portions, a ball body includes a transparent cover layer extending over the core surface, chemical light-emitting bodies include sealed vessels made of a flexible transparent material, the sealed vessels have cylindrical portions and round light-emitting portions having a diameter greater than that of the cylindrical portions, the cylindrical portions are tightly fit in the second hollow portions, and the light-emitting portions are fit in the first hollow portions.
    Type: Grant
    Filed: May 18, 2005
    Date of Patent: November 16, 2010
    Assignee: Lumica Corporation
    Inventor: Shiro Harada
  • Patent number: 7416689
    Abstract: The present invention provides a chemiluminescent composition including an oxalate and a fluorescent material wherein the chemiluminescent composition is mixed with a composition including hydrogen peroxide to induce chemiluminescence. The chemiluminescent composition comprises a solvent for the oxalate and the fluorescent material, which includes an acetyl citrate ester or an organic solvent containing an acetyl citrate ester. As an alternative to dibutyl phthalate which is suspected to be one of endocrine disrupting chemicals, the solvent of the present invention can assure safety to human body while maintaining excellent storage stability and luminescent performance.
    Type: Grant
    Filed: April 9, 2004
    Date of Patent: August 26, 2008
    Assignee: Lumica Corporation
    Inventor: Tetsuro Yamate
  • Publication number: 20080132363
    Abstract: The present invention provides a light-emitting ball, including surface layers and a tube covered therewith, for a ball game. A plurality of light-transmissive, elastic luminescent-body fixtures including light-emitting panels and luminescent body-retaining sections are arranged in the ball such that the light-emitting panels are exposed from holes, arranged in the surface layers, having substantially a circular shape. The luminescent body-retaining sections are substantially circular and have a size greater than that of the light-emitting panels. Outer end portions of the luminescent body-retaining sections are fixed between the surface layers and the tube. Luminescent-body insertion ports laterally extending in surface portions of the light-emitting panels are connected to cavities laterally extending in the luminescent body-retaining sections; hence, luminescent bodies can be detachably attached to the ball. The ball is practical in that the ball can be hit by a hand, kicked, or thrown against a floor.
    Type: Application
    Filed: February 24, 2005
    Publication date: June 5, 2008
    Applicant: Lumica Corporation
    Inventor: Shiro Harada
  • Patent number: 7234827
    Abstract: A first object is to prevent the leakage of chemiluminescent liquid during chemiluminescence. A second object is to provide enhanced shock resistance. A third object is to provide enhanced hydraulic-pressure resistance and a product at a low cost. A chemiluminescent device comprises a container, and a synthetic-resin ampoule contained in the flexible container. The ampoule has a surface formed with a groove extending along the circumferential direction thereof.
    Type: Grant
    Filed: January 14, 2004
    Date of Patent: June 26, 2007
    Assignee: Lumica Corporation
    Inventor: Masahiko Fujita
  • Patent number: 7216998
    Abstract: A first object is to prevent the leakage of chemiluminescent liquid during chemiluminescence. A second object is to provide enhanced shock resistance. A third object is to provide enhanced hydraulic-pressure resistance and a product at a low cost. A chemiluminescent device comprises a container, and a synthetic-resin ampoule contained in the flexible container. The ampoule has a surface formed with a groove extending along the circumferential direction thereof.
    Type: Grant
    Filed: November 27, 2002
    Date of Patent: May 15, 2007
    Assignee: Lumica Corporation
    Inventor: Masahiko Fujita
  • Patent number: 7147171
    Abstract: There is provided a diffuser for volatile material such as a volatile aromatic or chemical agent. The diffuser has a flexible casing having one or more vent holes formed therein and a breakable glass capsule hermetically enclosing a volatile agent. The capsule is contained in the flexible casing. A liquid-absorbent member is adapted to hold the volatile liquid.
    Type: Grant
    Filed: December 19, 2005
    Date of Patent: December 12, 2006
    Assignee: Lumica Corporation
    Inventors: Shiro Harada, Masahiko Fujita
  • Patent number: 7048203
    Abstract: The first object of the present invention is to provide a diffuser for volatile material such as a volatile aromatic or chemical agent, capable of promptly diffusing the volatile constituent of the liquid into a surrounding air in a simple operation. The second object of the present invention is to enable a long-term storage. The third object is to provide a compact diffuser enabling a user to enjoy different aroma according to a time and a place. The diffuser has a flexible casing having an inner space and a vent hole formed therein and a breakable glass capsule enclosing a volatile material, and a liquid-absorbent member.
    Type: Grant
    Filed: December 10, 2002
    Date of Patent: May 23, 2006
    Assignee: Lumica Corporation
    Inventors: Shiro Harada, Masahiko Fujita
  • Patent number: 6889826
    Abstract: The present invention provides a container including a housing with an opening and a wall. The wall includes an inner case 2 fitting into an outer case 1 while leaving a given distance therebetween to form first and second chambers. The first chamber 3 is located around the periphery of the opening of the housing. Further, a capsule 4 is housed in the first chamber 3. First and second substances capable of chemiluminescence upon reaction with one another are contained in the capsule 4 and in the second chamber 6, respectively.
    Type: Grant
    Filed: October 23, 2002
    Date of Patent: May 10, 2005
    Assignee: Lumica Corporation
    Inventors: Shiro Harada, Masahiko Fujita, Toshifumi Shinohara
  • Patent number: 6776495
    Abstract: The chemiluminescent device has a luminous body capable of generating light through a chemiluminescent reaction, and an outer layer for covering the luminous body. The outer layer is made of closed-cell plastic foam having a forming ratio in the range of 3 to 50%, preferably in the range of 20 to 30%. Closed-cell foamed polyethylene having no adverse environmental effect may be advantageously used as the closed-cell plastic foam. The chemiluminescent device having the outer layer made of closed-cell plastic foam provides increased luminous area, unsusceptibility to ambient temperature, and enhanced softness and shock-absorbability to achieve satisfactory luminescent effect, safety and reliability. The outer layer may have an outer surface formed with an irregularity to provide further enhanced luminescent effect.
    Type: Grant
    Filed: December 11, 2002
    Date of Patent: August 17, 2004
    Assignee: Lumica Corporation
    Inventor: Jun Nomiyama
  • Publication number: 20040141310
    Abstract: A first object is to prevent the leakage of chemiluminescent liquid during chemiluminescence. A second object is to provide enhanced shock resistance. A third object is to provide enhanced hydraulic-pressure resistance and a product at a low cost. A chemiluminescent device comprises a container, and a synthetic-resin ampoule contained in the flexible container. The ampoule has a surface formed with a groove extending along the circumferential direction thereof.
    Type: Application
    Filed: January 14, 2004
    Publication date: July 22, 2004
    Applicant: Lumica Corporation
    Inventor: Masahiko Fujita
  • Patent number: 6544093
    Abstract: A highly entertaining revolving and flying toy which is manufactured at low cost and can be seen in the dark. A revolving disk-shaped body 2 is provided with an insert pocket 2g in which chemical luminous body 3 is placed.
    Type: Grant
    Filed: July 3, 2001
    Date of Patent: April 8, 2003
    Assignee: Lumica Corporation
    Inventor: Yuichi Komuro
  • Publication number: 20020034918
    Abstract: A highly entertaining revolving and flying toy which is manufactured at low cost and can be seen in the dark. A revolving disk-shaped body 2 is provided with an insert pocket 2g in which chemical luminous body 3 is placed.
    Type: Application
    Filed: July 3, 2001
    Publication date: March 21, 2002
    Applicant: Lumica Corporation
    Inventor: Yuichi Komuro
  • Patent number: D503005
    Type: Grant
    Filed: September 2, 2003
    Date of Patent: March 15, 2005
    Assignee: Lumica Corporation
    Inventor: Masahiko Fujita
  • Patent number: D693021
    Type: Grant
    Filed: September 5, 2012
    Date of Patent: November 5, 2013
    Assignee: Lumica Corporation
    Inventor: Shiro Harada