Patents by Inventor Pirjo SAIKKONEN

Pirjo SAIKKONEN 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: 20240110107
    Abstract: Provided is a method for upgrading polymer waste-based material. The method includes providing a polymer waste-based feedstock, providing a crude oil-derived feedstock, blending the polymer waste-based feedstock, the crude oil-derived feedstock, and optionally a further feed material, to provide a feed mixture, hydrotreating the feed mixture at hydrodesulphurisation conditions to provide a hydrotreated material boiling in the middle distillate range, and recovering at least a jet fuel component from the hydrotreated material.
    Type: Application
    Filed: December 30, 2021
    Publication date: April 4, 2024
    Applicant: Neste Oyj
    Inventors: Kati SANDBERG, Pirjo SAIKKONEN, Ville PAASIKALLIO, Andrea PÉREZ NEBREDA
  • Patent number: 11718800
    Abstract: The present disclosure relates to methods for preparing aviation fuel component from a feedstock containing fossil hydrotreating feed and a second feed containing esters of fatty acids and rosins, free fatty acids and resin acids. The method includes subjecting the feedstock to hydrotreatment reaction conditions to produce a hydrotreated stream, separating the hydrotreated stream to three fractions from which at least part the highest boiling fraction is subjected to hydrocracking reaction to produce a hydrocracked stream. At least part of the hydrocracked stream is admixed with at least part of the hydrotreated stream, and their admixture is processed further until desired conversion of the feedstock to the aviation fuel component is obtained.
    Type: Grant
    Filed: November 23, 2020
    Date of Patent: August 8, 2023
    Assignee: NESTE OYJ
    Inventors: Ulla Kiiski, Salla Likander, Kati Sandberg, Pirjo Saikkonen
  • Patent number: 11692148
    Abstract: A method is disclosed for preparing a renewable fuel blend. The method includes subjecting at least two feedstocks of different biological origins to catalytic cracking in a catalytic cracking unit and to hydrotreatment in a hydrotreatment unit to form a fuel blend having an aromatic hydrocarbon content from 26 to 42 wt-% and a paraffinic hydrocarbon content of less than 53 wt-%, as measured according to ASTM D2425-04 (2011). The fuel blend is formed by mixing the at least two feedstocks together before subjecting them to the catalytic cracking and hydrotreatment, or by obtaining a first fuel component and at least one further fuel component from the catalytic cracking and hydrotreatment of the at least two feedstocks, and mixing the first fuel component and the at least one further fuel component together.
    Type: Grant
    Filed: November 22, 2018
    Date of Patent: July 4, 2023
    Assignee: NESTE OYJ
    Inventors: Jenni Nortio, Ulla Kiiski, Pirjo Saikkonen
  • Publication number: 20230134111
    Abstract: The present disclosure relates to methods for preparing aviation fuel component from a feedstock containing fossil hydrotreating feed and a second feed containing esters of fatty acids and rosins, free fatty acids and resin acids. The method includes subjecting the feedstock to hydrotreatment reaction conditions to produce a hydrotreated stream, separating the hydrotreated stream to three fractions from which at least part the highest boiling fraction is subjected to hydrocracking reaction to produce a hydrocracked stream. At least part of the hydrocracked stream is admixed with at least part of the hydrotreated stream, and their admixture is processed further until desired conversion of the feedstock to the aviation fuel component is obtained.
    Type: Application
    Filed: November 23, 2020
    Publication date: May 4, 2023
    Applicant: Neste Oyj
    Inventors: Ulla KIISKI, Salla LIKANDER, Kati SANDBERG, Pirjo SAIKKONEN
  • Publication number: 20200362254
    Abstract: A method is disclosed for preparing a renewable fuel blend. The method includes subjecting at least two feedstocks of different biological origins to catalytic cracking in a catalytic cracking unit and to hydrotreatment in a hydrotreatment unit to form a fuel blend having an aromatic hydrocarbon content from 26 to 42 wt-% and a paraffinic hydrocarbon content of less than 53 wt-%, as measured according to ASTM D2425-04 (2011). The fuel blend is formed by mixing the at least two feedstocks together before subjecting them to the catalytic cracking and hydrotreatment, or by obtaining a first fuel component and at least one further fuel component from the catalytic cracking and hydrotreatment of the at least two feedstocks, and mixing the first fuel component and the at least one further fuel component together.
    Type: Application
    Filed: November 22, 2018
    Publication date: November 19, 2020
    Applicant: Neste Oyj
    Inventors: Jenni NORTIO, Ulla KIISKI, Pirjo SAIKKONEN