Patents by Inventor Heikki Koivuniemi

Heikki Koivuniemi 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 freeze-drying cells in a hydrogel comprising nanofibrillar cellulose and freeze-dried cells in an aerogel comprising nanofibrillar cellulose
    Patent number: 11969505
    Abstract: The present disclosure provides a method for freeze-drying cells in a hydrogel comprising nanofibrillar cellulose, the method comprising providing a hydrogel comprising nanofibrillar cellulose, providing cells, combining the cells and the hydrogel comprising nanofibrillar cellulose to form a cell system, and freeze drying the cell system to obtain dried cells in a hydrogel comprising nanofibrillar cellulose. The present disclosure also provides a freeze-dried hydrogel comprising nanofibrillar cellulose and cells.
    Type: Grant
    Filed: April 4, 2022
    Date of Patent: April 30, 2024
    Assignee: UPM-KYMMENE CORPORATION
    Inventors: Heli Paukkonen, Vili-Veli Auvinen, Marjo Yliperttula, Patrick Laurën, Arto Urtti, Timo Laaksonen, Arto Merivaara, Tiina Hakkarainen, Outi Monni, Anne Mäkelä, Petter Somersalo, Piia-Riitta Karhemo, Heikki Joensuu, Raili Koivuniemi, Kari Luukko, Markus Nuopponen
  • Method and arrangement for optimizing oxidation during burning of gaseous and liquid fuels
    Patent number: 6109911
    Abstract: A method and an arrangement for reducing emissions of nitrogen oxides in a combustion apparatus provided with a tubular furnace. The method comprises burning odor gases at first sub-stoichiometrically, and subsequently supplying additional air to the furnace (3) in the transverse direction thereof in such a manner that the final air ratio is over 1. The arrangement comprises an additional air duct (7) which extends to the furnace of the boiler and from which additional air is supplied to the furnace (3) in the transverse direction of the furnace (3).
    Type: Grant
    Filed: October 7, 1998
    Date of Patent: August 29, 2000
    Assignee: Kvaerner Pulping Oy
    Inventors: Ari Tamminen, Risto Syrjalainen, Heikki Koivuniemi, Erkki Valimaki