Patents by Inventor Nobuhiko Nakayama

Nobuhiko Nakayama 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).

  • Polyolefin resin modifier, polyolefin resin composition and oriented polyolefin film
    Publication number: 20020072569
    Abstract: A crystalline polyolefin resin composition contains:
    Type: Application
    Filed: December 6, 2001
    Publication date: June 13, 2002
    Applicant: Idemitsu Petrochemical Co., Ltd.
    Inventors: Nobuhiko Nakayama, Isao Masada, Akira Aoki, Manabu Kaminaka
  • Polyolefin base porous film
    Patent number: 6403666
    Abstract: Provided is a polyolefin base porous film comprising a polyolefin composition in which calcium carbonate particles, preferably calcium carbonate particles subjected to surface treatment with chain carboxylic acid having 3 to 6 carbon atoms are dispersed. This polyolefin base porous film is characterized by that the leached solution with water has a pH which falls in the vicinity of neutrality and has a low stimulation to the skin, and therefore it is useful for goods contacting human bodies, particularly a back sheet for a sanitary napkin.
    Type: Grant
    Filed: November 19, 1999
    Date of Patent: June 11, 2002
    Assignee: Tokuyama Corporation
    Inventors: Nobuhiko Nakayama, Masaji Enokuchi
  • Polyolefin resin modifier, polyolefin resin composition and oriented polyolefin film
    Patent number: 6339128
    Abstract: A crystalline polyolefin resin composition contains: (A1) 4 to 20 wt % of a polyolefin resin component having an elution temperature of 36 to 104° C. and a molecular weight of 100,000 to 1,000,000 measured by TREF/SEC; and (B) 96 to 80 wt % of a crystalline polyolefin resin component different from the above component (A1), the wt % being based on the total weight of the components (A1) and (B).
    Type: Grant
    Filed: March 29, 2000
    Date of Patent: January 15, 2002
    Assignee: Idemitsu Petrochemical Co., Ltd.
    Inventors: Nobuhiko Nakayama, Isao Masada, Akira Aoki, Manabu Kaminaka