Patents by Inventor Naonobu Eto

Naonobu Eto 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).

  • Blue light-emitting compounds, processes of preparing the same, and luminescent element including the same
    Publication number: 20060261328
    Abstract: The present invention provides blue-light emitting compounds capable of emitting blue light at a high luminance for a long time upon the application of electric energy, processes of producing the compounds, and luminescent elements including the blue light-emitting compounds. One of the compounds according to the present invention is characterized by the chemical structure represented by formula (1).
    Type: Application
    Filed: March 15, 2004
    Publication date: November 23, 2006
    Inventors: Tadao Nakaya, Ryoji Matsumoto, Michiaki Tobita, Tomoyuki Saikawa, Naonobu Eto, Tatsuro Ishitobi
  • Luminescent polymers and light emitting devices
    Publication number: 20050282998
    Abstract: The present invention provides luminescent polymers which can easily be formed into a film or a sheet, and which can easily be incorporated into a luminescent element. The present invention also provides luminescent elements which can be produced easily by the employment of the luminescent polymers.
    Type: Application
    Filed: October 24, 2003
    Publication date: December 22, 2005
    Inventors: Tadao Nakaya, Michiaki Tobita, Naonobu Eto, Toshihiro Kodera
  • Recording medium with non-porous ink-receiving layer and method of use thereof
    Patent number: 5101218
    Abstract: A recording medium comprising a substrate and a non-porous ink receiving layer is provided. The ink receiving layer contains a water-insoluble polymer containing a cationic resin. The recording medium may be employed for recording by attaching droplets of a recording liquid thereon.
    Type: Grant
    Filed: August 25, 1989
    Date of Patent: March 31, 1992
    Assignee: Canon Kabushiki Kaisha
    Inventors: Mamoru Sakaki, Ryuichi Arai, Takashi Akiya, Shigeo Toganoh, Masahiko Higuma, Naonobu Eto, Hidemasa Mouri, Michiaki Tobita, Masahiko Ishida, Shunzo Kono
  • Recording member
    Patent number: 4911977
    Abstract: A recording member comprises a condensation product of an isocyanate compound and a polyether-polyol. A recording member comprises a substrated and an ink-receiving layer formed thereon in which a condensation product of an isocyanate compound and a polyether-polyol is contained. A recording member comprises a condensation product of an isocyanate compound and a polyether-polyol as main component and is in the form of a film.
    Type: Grant
    Filed: January 29, 1987
    Date of Patent: March 27, 1990
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hidemasa Mouri, Michiaki Tobita, Naonobu Eto
  • Recording medium with non-porous ink-receiving layer
    Patent number: 4877680
    Abstract: A recording medium comprising a substrate and a non-porous ink receiving layer is provided. The ink receiving layer contains a water-insoluble polymer containing a cationic resin. The recording medium may be employed for recording by attaching droplets of a recording liquid thereon.
    Type: Grant
    Filed: September 20, 1988
    Date of Patent: October 31, 1989
    Assignee: Canon Kabushiki Kaisha
    Inventors: Mamoru Sakaki, Ryuichi Arai, Takashi Akiya, Shigeo Toganoh, Masahiko Higuma, Naonobu Eto, Hidemasa Mouri, Michiaki Tobita, Masahiko Ishida, Shunzo Kono
  • Ink-receiving composite polymer material
    Patent number: 4868581
    Abstract: There are disclosed an ink-receiving composite polymer material wherein a nonvolatile organic compound is caused to penetrate into and diffuse through an ink-receiving polymer forming, from any one surface side thereof, and a recording medium for ink-jet recording wherein a nonvolatile organic compound is caused to penetrate into and diffuse through an ink-receiving layer, from the surface thereof.
    Type: Grant
    Filed: December 17, 1986
    Date of Patent: September 19, 1989
    Assignee: Cannon Kabushiki Kaisha
    Inventors: Hidemasa Mouri, Michiaki Tobita, Naonobu Eto, Masahiko Ishida, Shunzo Kouno, Takashi Akiya, Shigeo Toganoh, Masahiko Higuma, Mamoru Sakaki, Ryuichi Arai
  • Recording medium
    Patent number: 4801497
    Abstract: A recording medium comprises an ink receiving layer provided on a substrate, wherein said ink receiving layer contains a cationically modified product of polyvinyl alcohol and a water soluble polymer having no active hydrogen.
    Type: Grant
    Filed: December 4, 1986
    Date of Patent: January 31, 1989
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shunzo Kono, Hidemasa Mouri, Michiaki Tobita, Masahiko Ishida, Naonobu Eto, Takashi Akiya, Shigeo Toganoh, Masahiko Higuma, Mamoru Sakaki, Ryuichi Arai
  • Recording member and recording method using the same
    Patent number: 4756961
    Abstract: A light-transmissive recording member comprises a light-transmissive substrate and an ink acceptor provided on said substrate, wherein powdery particles are imparted onto the surface of said ink acceptor.
    Type: Grant
    Filed: May 20, 1985
    Date of Patent: July 12, 1988
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hidemasa Mouri, Michiaki Tobita, Naonobu Eto
  • Recording medium
    Patent number: 4642247
    Abstract: A recording medium for recording with aqueous ink without direct contact of recording means therewith comprises an under layer and an upper layer provided thereon. The upper layer is formed of substantially water-resistant resin and is sufficiently thin to provide immediate water and air permeability and the under layer is more hydrophilic than the upper layer. There is also provided a recording process employing aqueous ink droplets and a recording medium as mentioned above.
    Type: Grant
    Filed: June 26, 1985
    Date of Patent: February 10, 1987
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hidemasa Mouri, Michiaki Tobita, Naonobu Eto, Shunzo Kouno, Kosuke Ohkura, Shigeo Toganoh, Ryuichi Arai, Mamoru Sakaki, Kazuo Iwata, Hiromi Shibasaki