Patents by Inventor Motohiko Muramatsu

Motohiko Muramatsu 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).

  • Patent number: 5464028
    Abstract: A vented filter cigarette with a filter having a fiber filter material and a plug wrap paper wrapping the fiber filter material, a tobacco rod, and tipping paper having a plurality of pores and connecting the filter and the tobacco rod. An embossment is formed in a region of the plug wrap paper corresponding to the pores of the tipping paper. The embossment creates a slight gap between the tipping paper and the circumference of the filter around the pores, with the result that the tightness between the tipping paper and the circumference of the filter is loosened, the filter ventilation is increased, and the variation in the filter ventilation is decreased.
    Type: Grant
    Filed: April 11, 1994
    Date of Patent: November 7, 1995
    Assignee: Japan Tobacco, Inc.
    Inventors: Kazuko Takeda, Motohiko Muramatsu, Takashi Koyama
  • Patent number: 5394895
    Abstract: The vented filter cigarette is produced by combining a filter having a highly air-permeable circumferential surface and a tipping paper having a plurality of pores. The tipping paper has an embossment in the area of the pores formed therein. The embossment serves to create a slight gap between the tipping paper and the circumferential surface of the filter, by which the tightness therebetween is loosened. Thus, the filter ventilation is increased, and the variation in the degree of the ventilation can be reduced.
    Type: Grant
    Filed: August 1, 1994
    Date of Patent: March 7, 1995
    Assignee: Japan Tobacco, Inc.
    Inventors: Motohiko Muramatsu, Kazuko Takeda, Yasuyuki Futamura, Takayoshi Sagawa