Patents by Inventor Kiyokatsu Fujinami

Kiyokatsu Fujinami 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).

  • Mercury recovery apparatus
    Patent number: 6866814
    Abstract: Both ends of a bulb of a waste fluorescent lamp are cut off, a phosphor layer formed on an interior surface of the bulb is detached, so that mercury-containing phosphor powder can be obtained. The mercury-containing phosphor powder is subjected to a heating and reducing process with the dry-method, by mixing an organic reducing agent with the phosphor powder and heating the mixture, to vaporize and separate mercury from the phosphor powder. The vaporized mercury is then cooled and condensed, to collect mercury.
    Type: Grant
    Filed: May 21, 2004
    Date of Patent: March 15, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kenji Fujiwara, Kiyokatsu Fujinami
  • Mercury recovery method and mercury recovery apparatus
    Publication number: 20040213719
    Abstract: Both ends of a bulb of a waste fluorescent lamp are cut off, a phosphor layer formed on an interior surface of the bulb is detached, so that mercury-containing phosphor powder can be obtained. The mercury-containing phosphor powder is subjected to a heating and reducing process with the dry-method, by mixing an organic reducing agent with the phosphor powder and heating the mixture, to vaporize and separate mercury from the phosphor powder. The vaporized mercury is then cooled and condensed, to collect mercury.
    Type: Application
    Filed: May 21, 2004
    Publication date: October 28, 2004
    Inventors: Kenji Fujiwara, Kiyokatsu Fujinami
  • Mercury recovery method
    Patent number: 6800112
    Abstract: Both ends of a bulb of a waste fluorescent lamp are cut off, a phosphor layer formed on an interior surface of the bulb is detached, so that mercury-containing phosphor powder can be obtained. The mercury-containing phosphor powder is subjected to a heating and reducing process with the dry-method, by mixing an organic reducing agent with the phosphor powder and heating the mixture, to vaporize and separate mercury from the phosphor powder. The vaporized mercury is then cooled and condensed, to collect mercury.
    Type: Grant
    Filed: March 28, 2002
    Date of Patent: October 5, 2004
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Kenji Fujiwara, Kiyokatsu Fujinami
  • Mercury recovery method and mercury recovery apparatus
    Publication number: 20020167120
    Abstract: Both ends of a bulb of a waste fluorescent lamp are cut off, a phosphor layer formed on an interior surface of the bulb is detached, so that mercury-containing phosphor powder can be obtained. The mercury-containing phosphor powder is subjected to a heating and reducing process with the dry-method, by mixing an organic reducing agent with the phosphor powder and heating the mixture, to vaporize and separate mercury from the phosphor powder. The vaporized mercury is then cooled and condensed, to collect mercury.
    Type: Application
    Filed: March 28, 2002
    Publication date: November 14, 2002
    Inventors: Kenji Fujiwara, Kiyokatsu Fujinami