Patents Assigned to Sakai Engineering Co., Ltd.
  • Ultra-lightweight, open-pore foamed cellulose materials with large surface areas, having ion-exchangeable functional groups introduced therein
    Patent number: 5298615
    Abstract: An ultra-lightweight, open-pore foamed cellulose material with an increased surface area, having ion exchangeable functional groups introduced in it. The cellulose material presents a three-dimensional network structure which, upon swollen, has a particle diameter of 0.8 to 12.0 mm, a mean pore diameter of 0.1 to 1.7 mm, a specific surface area of 1.0 to 10.0 m.sup.2 /g, a true density of 1.4 to 1.6 g/cm.sup.3 and a porosity of 90% or greater. The ion exchangeable functional groups, for instance, may be cationic polyethyleneimine.
    Type: Grant
    Filed: April 5, 1991
    Date of Patent: March 29, 1994
    Assignees: Sakai Engineering Co., Ltd., Agro-Systems Corporation Limited
    Inventors: Tomomi Matsui, Kimiaki Yasuda, Michiyo Nojiri, Masanao Ohno
  • Antibacterial and deodorant processing agent and processing method using same
    Patent number: 5268168
    Abstract: An antibacterial and deodorant processing agent for the sanitary processing, in particular, for the sanitary processing of a fiber material having a hydrophobic surface, which comprises a derivative of an aminoglycoside antibiotic, and a method for the antibacterial and deodorant processing of a fiber material having a hydrophobic surface with the use of said antibacterial and deodorant processing agent.
    Type: Grant
    Filed: February 14, 1991
    Date of Patent: December 7, 1993
    Assignees: Sakai Engineering Co., Ltd., Meiji Seika Kaisha, Ltd.
    Inventors: Matsuko Katayama, Kimiaki Yasuda, Hidehi Takebe, Katsuharu Iinuma, Toshio Yoneta