Patents by Inventor Stephane Derrien

Stephane Derrien 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).

  • ALKALINE BATTERY SEPARATORS HAVING CONTROLLED PORE SIZE
    Publication number: 20240128587
    Abstract: An alkaline battery separator is made from a blend of polyvinyl alcohol and a cellulose derivative, and has a controlled pore size.
    Type: Application
    Filed: September 27, 2023
    Publication date: April 18, 2024
    Inventor: Stéphane DERRIEN
  • Alkaline battery separators having controlled pore size
    Patent number: 11811086
    Abstract: An alkaline battery separator is made from a blend of polyvinyl alcohol and a cellulose derivative, and has a controlled pore size.
    Type: Grant
    Filed: September 26, 2018
    Date of Patent: November 7, 2023
    Inventor: Stéphane Derrien
  • ALKALINE BATTERY SEPARATORS HAVING CONTROLLED PORE SIZE
    Publication number: 20200350541
    Abstract: An alkaline battery separator is made from a blend of polyvinyl alcohol and a cellulose derivative, and has a controlled pore size.
    Type: Application
    Filed: September 26, 2018
    Publication date: November 5, 2020
    Inventor: Stéphane DERRIEN
  • Filter Media
    Publication number: 20150001148
    Abstract: A filter element is disclosed made from a gathered paper web that may be crimped, embossed, and/or corrugated. In accordance with the present disclosure, the paper web is treated with at least two different additives. The first additive comprises amphiphilic molecules, having hydrophilic and hydrophobic ends such as a ketene dimer that has one or more branching groups. The second additive, on the other hand, may comprise a polymer component such as a polyalkylene glycol. The filter element may also be treated with a polyamine or an amino acid or salt thereof. In one embodiment, the filter element may be incorporated into the filter of a smoking article. The two additives together may improve smoke taste, reduce some smoke phenols, and reduce some smoke carbonyls.
    Type: Application
    Filed: June 26, 2014
    Publication date: January 1, 2015
    Inventors: Jiayi Pan, Christophe Le Moigne, Nathalie Durot, Michel Barale, Stephane Derrien