Patents by Inventor Elsa Olmos

Elsa Olmos 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).

  • Use of a polymer product for deposit formation control in manufacture of paper or board
    Patent number: 11441273
    Abstract: The invention relates to a use of a water-soluble polymer product comprising amphoteric polyacrylamide, which has neutral or cationic net charge at pH 7, a weight-average molecular weight of 2,500,000-18,000,000 g/mol and a total ionicity of 4-28 mol-%. The polymer product is used for controlling deposit formation caused by hydrophobic substances in manufacture of paper or board, where a fibre web is formed from an aqueous suspension of fibres. The invention relates also to a method for controlling deposit formation caused by hydrophobic substances in manufacture of paper or board, where a fibre web is formed from an aqueous suspension of fibres, as well as to produced paper or board.
    Type: Grant
    Filed: November 22, 2017
    Date of Patent: September 13, 2022
    Assignee: Kemira Oyj
    Inventors: Matti Hietaniemi, Asko Karppi, Maarit Latvanen, Elsa Olmos
  • Use of a polymer product for deposit formation control in manufacture of paper or board
    Publication number: 20210301473
    Abstract: The invention relates to a use of a water-soluble polymer product comprising amphoteric polyacrylamide, which has neutral or cationic net charge at pH 7, a weight-average molecular weight of 2 500 000-18 000 000 g/mol and a total ionicity of 4-28 mol-%. The polymer product is used for controlling deposit formation caused by hydrophobic substances in manufacture of paper or board, where a fibre web is formed from an aqueous suspension of fibres. The invention relates also to a method for controlling deposit formation caused by hydrophobic substances in manufacture of paper or board, where a fibre web is formed from an aqueous suspension of fibres, as well as to produced paper or board.
    Type: Application
    Filed: November 22, 2017
    Publication date: September 30, 2021
    Applicant: KEMIRA OYJ
    Inventors: Matti Hietaniemi, Asko Karppi, Maarit Latvanen, Elsa Olmos