Patents by Inventor Raf Samijn

Raf Samijn 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).

  • Patent number: 6632472
    Abstract: A redispersible or soluble product, optionally having a solids content higher than 10% by weight, obtainable by freeze drying an aqueous dispersion of a latex comprising a polyanion and a polymer or copolymer of a substituted or unsubstituted thiophene; a printing ink comprising the above product; a coating dispersion or solution comprising the above product; and a method for making an antistatic or electroconductive layer comprising the steps of redispersing or diluting the above product by adding water or an organic solvent so as to obtain a dispersion or solution, optionally adding other ingredients to the coating solution or dispersion and applying the dispersion or solution to an object.
    Type: Grant
    Filed: June 26, 2001
    Date of Patent: October 14, 2003
    Assignee: Agfa-Gevaert
    Inventors: Frank Louwet, Raf Samijn
  • Patent number: 6427595
    Abstract: According to the present invention there is provided a heat-sensitive imaging element for making lithographic printing plates. The heat-sensitive imaging element comprises an image-forming layer comprising hydrophobic thermoplastic polymer particles having a specific particle size and polydispersity for obtaining printing plates with an improved sensitivity, excellent developability, high throughput and less scumming.
    Type: Grant
    Filed: December 12, 1997
    Date of Patent: August 6, 2002
    Assignee: Agfa-Gevaert
    Inventors: Marc Van Damme, Joan Vermeersch, Frank Louwet, Raf Samijn
  • Publication number: 20020016440
    Abstract: A redispersible or soluble product, optionally having a solids content higher than 10% by weight, obtainable by freeze drying an aqueous dispersion of a latex comprising a polyanion and a polymer or copolymer of a substituted or unsubstituted thiophene; a printing ink comprising the above product; a coating dispersion or solution comprising the above product; and a method for making an antistatic or electroconductive layer comprising the steps of redispersing or diluting the above product by adding water or an organic solvent so as to obtain a dispersion or solution, optionally adding other ingredients to the coating solution or dispersion and applying the dispersion or solution to an object.
    Type: Application
    Filed: June 26, 2001
    Publication date: February 7, 2002
    Inventors: Frank Louwet, Raf Samijn
  • Patent number: 6028618
    Abstract: A thermal printing head comprising an outermost protective layer and a coating on the outermost surface of the outermost protective layer, wherein the coating comprises a hydrolyzed silane, the silane having the general formula: SiR.sup.1 R.sup.2 R.sup.3 R.sup.4 wherein R.sup.1, R.sup.2 and R.sup.3 are independently a C1 to C4 alkoxy group, a substituted C1 to C4 alkoxy group, bromine or chlorine; and R.sup.4 is a C1 to C4 alkyl group; a substituted C1 to C4 alkyl group, a C1 to C4 alkoxy group or a substituted C1 to C4 alkoxy group; a coating process therefor; and a thermographic printing process utilizing said coated thermal printing head.
    Type: Grant
    Filed: February 4, 1998
    Date of Patent: February 22, 2000
    Assignee: Agfa-Gevaert
    Inventors: Geert Defieuw, Raf Samijn, Johan Loccufier