Patents by Inventor Ryujiro Kouichi

Ryujiro Kouichi 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).

  • Resinous composition for the prolonged release of fragrant substances
    Patent number: 4515909
    Abstract: A resinous composition for fragrant substances is provided which comprises an ethylene-vinyl acetate copolymer containing from about 5% to about 35% of vinyl acetate monomer, by weight, and a diffusing agent selected from the group consisting of benzyl benzoate, benzyl salicylate, and di-(lower alkyl)phthalates, and mixtures thereof. The diffusing agent is absorbed in the copolymer. When fragrant substances are enclosed in a container made from the resinous composition of the present invention or the composition of the present invention is impregnated with such fragrant substances, a well-balanced, mild fragrance, inherent to the fragrant substance employed, is uniformly released over a long period of time.
    Type: Grant
    Filed: September 29, 1982
    Date of Patent: May 7, 1985
    Inventors: Kiyohito Sawano, Ryujiro Kouichi, Hideaki Oota, Masashi Takano, Michio Moroe