Patents by Inventor Shun-ichi TAJIMA

Shun-ichi TAJIMA 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).

  • METHOD FOR RECYCLING WATER ABSORBENT RESIN AND METHOD FOR PRODUCING WATER ABSORBENT RESIN
    Publication number: 20250066574
    Abstract: Provided are a method for producing a recycled water-absorbing resin which achieves reduction in deterioration of water absorption performance and reduction in coloration, and a method for producing a water-absorbing resin with use of the recycled water-absorbing resin. The present disclosure relates to, for example, a method for producing a recycled water-absorbing resin from a used absorbent article, the method including: a urea removal step of removing urea so that a urea content in the recycled water-absorbing resin becomes 2 mass % or less; and a recovery step of recovering a water-absorbing property.
    Type: Application
    Filed: February 6, 2023
    Publication date: February 27, 2025
    Inventors: Nobuhiro KOBAYASHI, Daisuke MATSUI, Kazuki KIMURA, Kazushi TORII, Mariko TAMAKI, Shun-ichi TAJIMA, Kunihiko ISHIZAKI