Patents by Inventor Syuji Machida

Syuji Machida 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).

  • Process for production of ethylene copolymers
    Patent number: 4843135
    Abstract: A new ethylene copolymer comprising:a repeating unit (A) represented by the formula: --CH.sub.2 --CH.sub.2 --;a repeating unit (B) represented by the formula: ##STR1## (wherein R.sup.1 is defined as hereinbefore), and a repeating unit (C) represented by the formula: ##STR2## (wherein R.sup.2 and R.sup.3 are defined as hereinbefore), said repeating units (A), (B) and (C) being orientated in a random and straight chain arrangement, said repeating unit (B) content being 0 to 45 mol %, said repeating unit (C) content being 0.001 to 45 mol %, and said copolymer having a weight average molecular weight of at least 5,000.A process for producing said ethylene copolymer by using a catalyst containing a specific chromium compound.
    Type: Grant
    Filed: September 16, 1988
    Date of Patent: June 27, 1989
    Assignee: Idemitsu Kosan Company Limited
    Inventors: Masato Tanaka, Syuji Machida, Michitake Uoi
  • Ethylene copolymers and process for production
    Patent number: 4833224
    Abstract: A new ethylene copolymer comprising: a repeating unit (A) represented by the formula:--CH.sub.2 --CH.sub.2 --;a repeating unit (B) represented by the formula: ##STR1## (wherein R.sup.1 is defined as hereinbefore), and a repeating unit (C) represented by the formula: ##STR2## (wherein R.sup.2 and R.sup.3 are defined as hereinbefore), said repeating units (A), (B) and (C) being orientated in a random and straight chain arrangement, said repeating unit (B) content being 0 to 45 mol %, said repeating unit (C) content being 0.001 to 45 mol %, and said copolymer having a weight average molecular weight of at least 5,000.A process for producing said ethylene copolymer by using a catalyst containing a specific chromium compound.
    Type: Grant
    Filed: October 6, 1986
    Date of Patent: May 23, 1989
    Assignee: Idemitsu Kosan Company Limited
    Inventors: Masato Tanaka, Syuji Machida, Michitake Uoi