Patents by Inventor Tapio Mattila

Tapio Mattila 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 the preparation of aqueous solutions containing performic acid as well as their use
    Patent number: 6049002
    Abstract: The method for the preparation of aqueous solutions containing performic acid formed by reaction of formic acid and hydrogen peroxide n the presence of a catalyst, the catalyst being a compound containing at least one ester group and/or group (a) differing from a carboxylic acid group and an alcoholic group, preferably a carboxylic acid ester, and aqueous solutions containing performic acid, formic acid, hydrogen peroxide, and a compound containing at least one ester group and/or group (a) differing from a carboxylic acid group, and the use of such solutions.
    Type: Grant
    Filed: October 28, 1996
    Date of Patent: April 11, 2000
    Assignee: Kemira Chemicals B.V.
    Inventors: Tapio Mattila, deceased, Reijo Aksela
  • Process for preparing a substantially pure aqueous solution of hydrogen peroxide
    Patent number: 5705040
    Abstract: A process for preparing a substantially pure aqueous solution of hydrogen peroxide is described. An impure hydrogen peroxide solution is vaporized in a vaporizer to form a vapor containing hydrogen peroxide and a concentrated hydrogen peroxide solution in equilibrium therewith. The solution also contains impurities. A substantially pure hydrogen peroxide solution is obtained by a partially condensing the vapor containing hydrogen peroxide. In addition to the solution, a residual vapor, in equilibrium with the solution and having a lower hydrogen peroxide concentration, can be condensed in a separate condenser. The concentration of the hydrogen peroxide solution obtained by the process can be regulated, for example, by regulating the condensation efficiency of the partial condensation.
    Type: Grant
    Filed: February 15, 1996
    Date of Patent: January 6, 1998
    Inventors: Pekka Johnsson, Tapio Mattila, Kari Saari
  • Method for converting vegetable material into chemicals
    Patent number: 4732708
    Abstract: The invention relates to a method for converting biopolyesters consisting of straight-chain hydroxyacid monomers containing 10 to 40 carbon atoms, such as suberin and cutin, into a plain mixture of organic acids and their salts containing only a few main components. The depolymerization is carried out according to the invention by oxidizing either with a strong oxidizer or by dehydrating oxidation with strong alkali at elevated temperature.
    Type: Grant
    Filed: February 20, 1986
    Date of Patent: March 22, 1988
    Assignee: Kemira Oy
    Inventors: Rainer Ekman, Christer Eckerman, Tapio Mattila, Elias Suokas
  • Coating composition
    Patent number: 4412023
    Abstract: A coating composition especially for chipboard (particle board) which releases formaldehyde is described, to which coating composition is added 0.2-10% by weight of cyclic urea, especially ethylene urea.
    Type: Grant
    Filed: November 2, 1981
    Date of Patent: October 25, 1983
    Assignee: Tikkurilan Varitehtaat Oy
    Inventors: Olof Jernstrom, Tapio Mattila, Kyosti Penttinen, Hannu Toivonen
  • Method for producing 5-nitro-2-furfuryl acetate
    Patent number: 4045453
    Abstract: Furfuryl acetate is reacted at 0.degree.-20.degree. C with a mixture containing strong nitric acid and less than 7 mole, preferably less than 5 mole, acetic anhydride per 1 mole furfuryl acetate, in order to produce an intermediate of nitration, whereafter water is added and the aqueous solution is neutralized to a pH of 4.7-6.5 and finally the mixture is heated to 40.degree.-60.degree. C.
    Type: Grant
    Filed: August 18, 1975
    Date of Patent: August 30, 1977
    Assignee: Kemira Oy
    Inventors: Ilkka Renvall, Tapio Mattila
  • Esterification of furfuryl alcohol and its derivates
    Patent number: 4008256
    Abstract: Furfuryl alcohol is esterified by means of an aliphatic anhydride or its halogen derivative using aliphatic, tertiary amines as catalysts.
    Type: Grant
    Filed: August 7, 1975
    Date of Patent: February 15, 1977
    Assignee: Kemira Oy
    Inventors: Ilkka Renvall, Tapio Mattila