Patents by Inventor Osmo Hormi

Osmo Hormi 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).

  • Process for the preparation of 3-substituted thiophenes
    Patent number: 5512685
    Abstract: The invention relates to a process for the preparation of 3-substituted thiophenes in which the substituent is a C.sub.4 -C.sub.18 -alkyl group. According to the invention, the preparation is carried out by allowing an alkali metal salt of a C.sub.4 -C.sub.18 -alkyl-succinic acid to react with a compound of sulfur and phosphorus, e.g. tetraphosphorus decasulfide, in an organic solvent at a temperature of 100.degree.-180.degree. C., the product obtained being 3-(C.sub.4 -C.sub.18 -alkyl)thiophene. The said reaction may be the last step in a process in which the initial material is maleic acid anhydride with which .alpha.-C.sub.4 -C.sub.18 -alkene is combined so that C.sub.4 -C.sub.18 -alkenylsuccinic acid anhydride is obtained, whereafter this is hydrogenated catalytically to produce C.sub.4 -C.sub.18 -alkylsuccinic acid anhydride. This is thereafter reacted with an alkali metal hydroxide so that an alkali salt of the C.sub.4 -C.sub.
    Type: Grant
    Filed: December 20, 1994
    Date of Patent: April 30, 1996
    Assignee: Neste Oy
    Inventors: Hannele Jarvinen, Leila Lahtinen, Osmo Hormi, Jan Nasman, Anna-Liisa Tammi
  • Process for making a macroporous styrene polymer
    Patent number: 5300604
    Abstract: The invention relates to novel methylene bisphosphonic acid derivatives carrying a styrene group attached to the methylene carbon. The novel compounds are useful e.g. for functionalizing polymers of styrene type, especially macroporous styrene polymers, by copolymerizing the novel derivative with styrene and optional crosslinking agents. The invention also provides for new crosslinking agents especially suitable for the said purpose.
    Type: Grant
    Filed: December 11, 1992
    Date of Patent: April 5, 1994
    Inventors: Jan-Anders H. Nasman, Osmo Hormi, Esko Pajunen, Mats J. Sundell
  • Bisphosphonic acid derivatives and their use
    Patent number: 5200554
    Abstract: The invention relates to novel methylene bisphosphonic acid derivatives carrying a styrene group attached to the methylene carbon. The novel compounds are useful e.g. for functionalizing polymers of styrene type, especially macroporous styrene polymers, by copolymerizing the novel derivative with styrene and optional crosslinking agents. The invention also provides for new crosslinking agents especially suitable for the said purpose.
    Type: Grant
    Filed: January 21, 1992
    Date of Patent: April 6, 1993
    Inventors: Jan-Anders H. Nasman, Osmo Hormi, Esko O. Pajunen, Mats J. Sundell