Patents by Inventor Christianus A. A. Claesen

Christianus A. A. Claesen 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).

  • Copolyestercarbonate composition derived from dihydricphenol, carbonate precursor and alpha omega-dicarboxylic acid
    Patent number: 5510448
    Abstract: A composition comprising a copolyestercarbonate derived from a dihydric phenol, a carbonate precursor, and an aliphatic alpha omega dicarboxylic acid or ester precursor wherein the dicarboxylic acid or ester precursor has from 10 to about 20 carbon atoms, inclusive, and is present in the copolyestercarbonate in quantities of from about 2 to 30 mole percent of the dihydric phenol.
    Type: Grant
    Filed: January 17, 1995
    Date of Patent: April 23, 1996
    Assignee: General Electric Company
    Inventors: Luca P. Fontane, Kenneth F. Miller, Christianus A. A. Claesen, Peter W. van Es, Theodorus O. N. de Vroomen, Clayton V. Quinn, Richard W. Campbell
  • Thermoplastic composition with boron compounds
    Patent number: 5466733
    Abstract: The invention relates to a material which comprises at least 20% of polyphenylene ether and which comprises as a flame-retardant 0.05-10% by weight of a boron compound, for example, boric acid, B.sub.2 O.sub.3, borate, salts or borate esters related to the polyphenylene ether, as well as, optionally, a plasticiser and further conventionally used additives.
    Type: Grant
    Filed: January 24, 1994
    Date of Patent: November 14, 1995
    Assignee: General Electric Company
    Inventors: Theodorus L. Hoeks, Christianus A. A. Claesen, Johannes H. G. M. Lohmeijer, James E. Pickett
  • Phenolic compound end capped polyester carbonate
    Patent number: 5321114
    Abstract: A composition comprising a copolyestercarbonate derived from a dihydric phenol, a carbonate precursor, and an aliphatic alpha omega dicarboxylic acid or ester precursor wherein the dicarboxylic acid or ester precursor has from 10 to about 20 carbon atoms, inclusive, and is present in the copolyestercarbonate in quantities of from about 2 to 30 mole percent of the dihydric phenol.
    Type: Grant
    Filed: April 8, 1993
    Date of Patent: June 14, 1994
    Assignee: General Electric Company
    Inventors: Luca P. Fontana, Kenneth F. Miller, Christianus A. A. Claesen, Peter W. van Es, Theodorus O. N. de Vroomen, Clayton B. Quinn, Richard W. Campbell
  • Polymer mixture comprising polyphenylene ether, sterically hindered amine and epoxy compound and articles manufactured therefrom
    Patent number: 5210119
    Abstract: The invention relates to polymer mixtures which comprise a polyphenylene ether, a sterically hindered amine, an epoxy compound, and a salt of a fatty acid. The polymer mixtures according to the invention have a good stability against discoloring by light.
    Type: Grant
    Filed: July 3, 1991
    Date of Patent: May 11, 1993
    Assignee: General Electric Company
    Inventors: Christianus A. A. Claesen, Hideo Koike
  • Tri or tetraesters of aliphatic monocarboxylic acids of 6 to 9 carbon atoms and pentaerythritol as mold releases for aromatic polycarbonates
    Patent number: 5210124
    Abstract: A composition comprising an aromatic polycarbonate in admixture with a mold release effective amount of an ester of an aliphatic carboxylic acid of 6 to about 9 carbon atoms and a trihydric or tetrahydric alcohol.
    Type: Grant
    Filed: July 22, 1991
    Date of Patent: May 11, 1993
    Assignee: General Electric Company
    Inventors: Thomas W. Hovatter, Christianus A. A. Claesen, Hermanus B. Savenije
  • Polymer mixture having aromatic polycarbonate, styrene I containing copolymer and/or graft polymer and a flame-retardant, articles formed therefrom
    Patent number: 5204394
    Abstract: The invention relates to a polymer mixture which comprises an aromatic polycarbonate, a styrene-containing copolymer and/or a styrene-containing graft polymer and a flame-retardant. It has been found that the use of a certain type of flame-retardants, namely oligomeric phosphates leads to a polymer mixture having improved properties. In particular to a polymer mixture having a good combination of flame retardancy, non-juicing characteristics of the flame retardant, good plastifying effect and good heat resistance.
    Type: Grant
    Filed: May 20, 1992
    Date of Patent: April 20, 1993
    Assignee: General Electric Company
    Inventors: Johannes C. Gosens, Charles F. Pratt, Herman B. Savenije, Christianus A. A. Claesen
  • Phosphine oxide substituted polycarbonate
    Patent number: 5194564
    Abstract: Novel flame retardant polycarbonates are prepared that maintain a T.sub.g and an impact strength similar to that of non-modified polycarbonates. More particular, phosphine oxide containing polycarbonates are prepared that demonstrate improved flame retardancy and the retention of impact strength and glass transition temperature.
    Type: Grant
    Filed: June 18, 1992
    Date of Patent: March 16, 1993
    Assignee: General Electric Company
    Inventors: Gary C. Davis, Christianus A. A. Claesen, Erwin M. A. Gijzen
  • Polymer containing fluorinated polymer and boron compound
    Patent number: 5182325
    Abstract: The flame-retardant properties of polymers with an aromatic main chain can be improved by incorporating therein a fluorine compound in combination with a boron compound.
    Type: Grant
    Filed: October 12, 1989
    Date of Patent: January 26, 1993
    Assignee: General Electric Co.
    Inventors: Christianus A. Claesen, Johannus H. G. M. Lohmeijer, Michael P. J. Boogers, Jan Bussink, Hermannus B. Savenije, Theodorus L. Hoeks, Johannes C. Gosens
  • Polymer mixture comprising polyphenylene ether, sterically hindered amine and epoxy compound and articles manufactured therefrom
    Patent number: 5045578
    Abstract: The invention relates to polymer mixtures which comprise a polyphenylene ether, a sterically hindered amine, an epoxy compound, and a salt of a fatty acid. The polymer mixtures according to the invention have a good stability against discoloring by light.
    Type: Grant
    Filed: October 13, 1988
    Date of Patent: September 3, 1991
    Assignee: General Electric Co.
    Inventors: Christianus A. A. Claesen, Hideo Koike
  • Phosphorylating agent
    Patent number: 4692542
    Abstract: The invention relates to phosphorylating agents containing at least one protected hydroxyl group and at least one leaving group. According to the invention, a methylsulphonylethyl group (Mse) is used as the hydroxyl protecting group. Typical examples of such phosphorylating agents are the compounds (MseO).sub.2 POL, (MseO)POLL', (MseO).sub.2 PL and (MseO)PLL', in which L and L' are leaving groups. The invention also relates to processes for preparing these phosphorylating agents and processes for the phosphorylation of organic hydroxyl or amine compounds, in particular nucleosides and (poly)nucleotides.
    Type: Grant
    Filed: June 20, 1984
    Date of Patent: September 8, 1987
    Assignee: Stichting Katholieke Universiteit
    Inventors: Godefridus I. Tesser, Christianus A. A. Claesen
  • Polymer mixture having aromatic polycarbonate styrene I containing copolymer and/or graft polymer and a flame-retardant, articles formed therefrom
    Patent number: RE36188
    Abstract: The invention relates to a polymer mixture which comprises an aromatic polycarbonate, a styrene-containing copolymer and/or a styrene-containing graft polymer and a flame-retardant. It has been found that the use of a certain type of flame-retardants, namely oligomeric phosphates leads to a polymer mixture having improved properties. In particular to a polymer mixture having a good combination of flame retardancy, non-juicing characteristics of the flame retardant, good plastifying effect and good heat resistance.
    Type: Grant
    Filed: September 3, 1997
    Date of Patent: April 6, 1999
    Assignee: General Electric Company
    Inventors: Johannes C. Gosens, Charles F. Pratt, Herman B. Savenije, Christianus A. A. Claesen