Patents Assigned to Raision Tehtaat Oy AB
  • Process for preparing a synthetic ester from a vegetable oil
    Patent number: 5885946
    Abstract: The object of the invention is a process for preparing a synthetic ester from a vegetable oil by a two-stage transesterification process. Further objects of the invention are lubricants containing a synthetic ester prepared by the process according to the invention.
    Type: Grant
    Filed: March 4, 1997
    Date of Patent: March 23, 1999
    Assignee: Raision Tehtaat Oy Ab
    Inventor: Merja Lamsa
  • Reducing level of interference chemicals in water circulation of wood-based fibre suspension processes
    Patent number: 5578169
    Abstract: The invention relates to a method for reducing the amount of interference substances in the water circulations of processes involving wood-based fibre suspensions by binding the disturbance substances to the fibres by means of cationic starch. The amount of the said starch added to the fibre suspension is approximately 0.04-0.5% of the fibre weight.
    Type: Grant
    Filed: May 5, 1994
    Date of Patent: November 26, 1996
    Assignee: Raision Tehtaat OY AB
    Inventor: Tapio Vihervaara
  • Use of a stanol fatty acid ester for reducing serum cholesterol level
    Patent number: 5502045
    Abstract: The invention relates to a substance which lowers cholesterol levels in serum and which is a .beta.-sitostanol fatty acid ester or fatty acid ester mixture, and to a method for preparing the same. The substance can be used as such or added to a food.
    Type: Grant
    Filed: November 22, 1993
    Date of Patent: March 26, 1996
    Assignee: Raision Tehtaat Oy AB
    Inventors: Tatu Miettinen, Hannu Vanhanen, Ingmar Wester