Patents by Inventor Izumi Mega

Izumi Mega 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).

  • Terminal-blocked isocyanate prepolymer having oxadiazine ring, process for producing the same, and composition for surface-coating material
    Patent number: 6710151
    Abstract: The end-blocked isocyanate prepolymer having an oxadiazine ring according to the present invention is characterized in that at least one of isocyanate groups of a NCO-terminated isocyanate prepolymer, which has NCO groups at the ends and comprises units derived from an oxadiazinetrione compound (A) represented by the following formula (1) and units derived from an active hydrogen compound (B) represented by the following formula (2), is blocked with a unit derived from an end-blocking agent (C) having at least one active hydrogen in one molecule, and that the end-blocked isocyanate prepolymer has a softening point of not lower than 50° C.
    Type: Grant
    Filed: November 12, 2002
    Date of Patent: March 23, 2004
    Assignee: Mitsui Chemicals, Inc.
    Inventors: Toshiaki Kuwatsuka, Hideaki Ogata, Manabu Shimoda, Ryuuji Haseyama, Izumi Mega
  • Terminal-blocked isocyanate prepolymer having oxadiazine ring, process for producing the same, and composition for surface-coating material
    Publication number: 20030162930
    Abstract: The end-blocked isocyanate prepolymer having an oxadiazine ring according to the present invention is characterized in that at least one of isocyanate groups of a NCO-terminated isocyanate prepolymer, which has NCO groups at the ends and comprises units derived from an oxadiazinetrione compound (A) represented by the following formula (1) and units derived from an active hydrogen compound (B) represented by the following formula (2), is blocked with a unit derived from an end-blocking agent (C) having at least one active hydrogen in one molecule, and that the end-blocked isocyanate prepolymer has a softening point of not lower than 50° C.
    Type: Application
    Filed: November 12, 2002
    Publication date: August 28, 2003
    Inventors: Toshiaki Kuwatsuka, Hideaki Ogata, Manabu Shimoda, Ryuuji Haseyama, Izumi Mega
  • Urethane resin composition for sealing optoelectric conversion devices
    Publication number: 20030036620
    Abstract: A urethane resin composition for an optoelectric conversion element sealer according to the present invention is a urethane resin composition for an optoelectric conversion element sealer comprising a component (A) containing a compound having isocyanate groups and a component (B) containing a compound having hydroxyl groups, wherein the compound having isocyanate groups is at least one compound selected from the group consisting of an aromatic isocyanate having a structure in which the isocyanate groups are not directly bonded to a benzene ring, an aliphatic isocyanate, an alicyclic isocyanate, and derivatives of these isocyanates.
    Type: Application
    Filed: September 24, 2001
    Publication date: February 20, 2003
    Inventors: Hisashi Kawanabe, Izumi Mega, Satoshi Yamasaki, Kunihiro Yamada, Hisato Itou, Masaaki Torisu
  • Diguanamines and preparation process, derivatives and use thereof
    Patent number: 5596039
    Abstract: Provided by the present invention are novel diguanamine derivatives, led by 2,5/2,6-bis(4,6-diamino-1,3,5-triazin-2-yl)-bicyclo[2.2.1]heptanes and 1,3/1,4-bis(4,6-diamino-1,3,5-triazin-2-yl)-cyclohexanes, and derivatives thereof, applications of these compounds in fields such as adhesives and paints, utilization of these compounds in flame-retarding, thermal stabilization and compatibilization methods of resins, thermosetting molding compositions and thermosetting expansion-molding compositions making use of these compounds, as well as polymeric microspheres also using these compounds. These compounds are expected to find wide spread industrial utility as various excellent properties can be obtained by using them.
    Type: Grant
    Filed: February 24, 1994
    Date of Patent: January 21, 1997
    Assignee: Mitsui Toatsu Chemicals, Incorporated
    Inventors: Tetsuya Oishi, Hiroshi Ozawa, Minato Karasawa, Masamitsu Inomata, Izumi Mega, Atsuyoshi Yamauchi
  • Diguanamines and preparation process, derivatives and use thereof
    Patent number: 5545702
    Abstract: Provided by the present invention are novel diguanamine derivatives, led by 2,5/2,6-bis(4,6-diamino-1,3,5-triazin-2-yl)-bicyclo[2.2.1]heptanes and 1,3/1,4-bis(4,6-diamino-1,3,5-triazin-2-yl)-cyclohexanes, and derivatives thereof, applications of these compounds in fields such as adhesives and paints, utilization of these compounds in flame-retarding, thermal stabilization and compatibilization methods of resins, thermosetting molding compositions and thermosetting expansion-molding compositions making use of these compounds, as well as polymeric microspheres also using these compounds. These compounds are expected to find wide spread industrial utility as various excellent properties can be obtained by using them.
    Type: Grant
    Filed: October 3, 1995
    Date of Patent: August 13, 1996
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Tetsuya Oishi, Hiroshi Ozawa, Minato Karasawa, Masamitsu Inomata, Izumi Mega, Atsuyoshi Yamauchi, Kazunori Kamada, Shigeru Nakahata, Katsumi Sakamoto, Tatsunobu Nakashima, Akito Watanabe, Jin Suzuki, Kouhei Ohkawa, Satoshi Furusawa, Hiroshi Ono, Kazuo Sugazaki
  • Diguanamines and preparation process, derivatives and use thereof
    Patent number: 5536795
    Abstract: Provided by the present invention are novel diguanamine derivatives, led by 2,5/2,6-bis(4,6-diamino-1,3,5-triazin-2-yl)-bicyclo[2.2.1]heptanes and 1,3/1,4-bis(4,6-diamino-1,3,5-triazin-2-yl)-cyclohexanes, and derivatives thereof, applications of these compounds in fields such as adhesives and paints, utilization of these compounds in flame-retarding, thermal stabilization and compatibilization methods of resins, thermosetting molding compositions and thermosetting expansion-molding compositions making use of these compounds, as well as polymeric microspheres also using these compounds. These compounds are expected to find wide spread industrial utility as various excellent properties can be obtained by using them.
    Type: Grant
    Filed: March 30, 1995
    Date of Patent: July 16, 1996
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Tetsuya Oishi, Hiroshi Ozawa, Minato Karasawa, Masamitsu Inomata, Izumi Mega, Atsuyoshi Yamauchi
  • Diguanamines and preparation process, derivatives and use thereof
    Patent number: 5480947
    Abstract: Provided by the present invention are novel diguanamine derivatives, led by 2,5/2,6-bis(4,6-diamino-1,3,5-triazin-2-yl)-bicyclo[2.2.1]heptanes and 1,3/1,4-bis(4,6-diamino-1,3,5-triazin-2-yl)-cyclohexanes, and derivatives thereof, applications of these compounds in fields such as adhesives and paints, utilization of these compounds in flame-retarding, thermal stabilization and compatibilization methods of resins, thermosetting molding compositions and thermosetting expansion-molding compositions making use of these compounds, as well as polymeric microspheres also using these compounds. These compounds are expected to find wide spread industrial utility as various excellent properties can be obtained by using them.
    Type: Grant
    Filed: March 30, 1995
    Date of Patent: January 2, 1996
    Assignee: Mitsui Toatsu Chemicals, Inc.
    Inventors: Tetsuya Oishi, Hiroshi Ozawa, Minato Karasawa, Masamitsu Inomata, Izumi Mega, Atsuyoshi Yamauchi, Kazunori Kamada, Shigeru Nakahata, Katsumi Sakamoto, Tatsunobu Nakashima, Akito Watanabe, Jin Suzuki, Kouhei Ohkawa, Satoshi Furusawa, Hiroshi Ono, Kazuo Sugazaki