Patents by Inventor Ippei FUJINAGA (DECEASED)

Ippei FUJINAGA (DECEASED) 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).

  • METHOD OF PRODUCING AMORPHOUS CARBON MATERIAL FOR THE NEGATIVE ELECTRODE OF LITHIUM ION SECONDARY BATTERY, AND LITHIUM ION SECONDARY BATTERY
    Publication number: 20140161713
    Abstract: An amorphous carbon material for lithium-ion secondary battery negative electrode is capable of reducing capacity degradation due to repeated charge and discharge cycles, storage while being charged, or floating charge. A method for producing an amorphous carbon material for a negative electrode of a lithium-ion secondary battery includes the steps of: pulverizing and classifying a raw coke composition obtained from a heavy-oil composition undergone coking by delayed coking process to obtain powder of the raw coke composition, the raw coke composition having a H/C atomic ratio that is a ratio of hydrogen atoms H and carbon atoms C of 0.30 to 0.50 and having a micro-strength of 7 to 17 mass %; giving compressive stress and shear stress to the powder of the raw coke composition to obtain a carbonized composition precursor; and heating the carbonized composition precursor under an inert atmosphere at a temperature from 900° C. to 1,500° C.
    Type: Application
    Filed: May 17, 2013
    Publication date: June 12, 2014
    Inventors: Takashi SUZUKI, Noriyo ISHIMARU, Takashi OYAMA, Tamotsu TANO, Toshiyuki ODA, Ippei FUJINAGA (DECEASED), Tomoaki URAI, Seiji OKAZAKI, Katsuaki KURATA, Toshiaki HIRAMOTO, Akino SATO, Wataru ODA
  • METHOD OF PRODUCING AMORPHOUS CARBON MATERIAL FOR THE NEGATIVE ELECTRODE OF LITHIUM ION SECONDARY BATTER, AND LITHIUM ION SECONDARY BATTERY
    Publication number: 20130251621
    Abstract: An amorphous carbon material for lithium-ion secondary battery negative electrode is capable of reducing capacity degradation due to repeated charge and discharge cycles, storage while being charged, or floating charge. A method for producing an amorphous carbon material for a negative electrode of a lithium-ion secondary battery includes the steps of: pulverizing and classifying a raw coke composition obtained from a heavy-oil composition undergone coking by delayed coking process to obtain powder of the raw coke composition, the raw coke composition having a H/C atomic ratio that is a ratio of hydrogen atoms H and carbon atoms C of 0.30 to 0.50 and having a micro-strength of 7 to 17 mass %; giving compressive stress and shear stress to the powder of the raw coke composition to obtain a carbonized composition precursor; and heating the carbonized composition precursor under an inert atmosphere at a temperature from 900° C. to 1,500° C.
    Type: Application
    Filed: May 17, 2013
    Publication date: September 26, 2013
    Applicants: TODA KOGYO CORP., JX NIPPON OIL & ENERGY CORPORATION
    Inventors: Takashi SUZUKI, Noriyo ISHIMARU, Takashi OYAMA, Tamotsu TANO, Toshiyuki ODA, Ippei FUJINAGA (DECEASED), Tomoaki URAl, Seiji OKAZAKI, Katsuaki KURATA, Toshiaki HIRAMOTO, Akino SATO, Wataru ODA