Patents by Inventor Masanao Ohno

Masanao Ohno 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).

  • 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