Patents by Inventor . FERIANTO

. FERIANTO 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).

  • Publication number: 20240041103
    Abstract: There is disclosed a method for making a filter element comprising the steps of: advancing two or more sheets of filtering material in a longitudinal direction; separating the two or more sheets of longitudinally advancing filtering material; gathering the separated sheets of longitudinally advancing filtering material to form a partially gathered rod of filtering material having a longitudinally extending recess; inserting an additive release vessel into the longitudinally extending recess; gathering the filtering material around the additive release vessel to close the recess and thereby form a rod comprising a longitudinally extending core of filtering material and one or more additive release vessels.
    Type: Application
    Filed: December 8, 2021
    Publication date: February 8, 2024
    Inventors: Rosi Ana QOLBI, Sudirman WIDIARTO, Areif RAHMAN, Hendra Kresa WIJAYA, . GIYANTO, . WURYANTO, . FERIANTO