Patents by Inventor Dirk Bollen

Dirk Bollen 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).

  • Publication number: 20140065387
    Abstract: The present invention relates to a dispersion comprising metallic, metal oxide or metal precursor nanoparticles and a polymeric dispersant, the dispersant comprising an anchor group with affinity for the metallic, metal oxide or metal precursor nanoparticles that is chemically bonded to a polymeric backbone characterized in that the dispersant has a 95 wt. % decomposition at a temperature below 300° C. as measured by Thermal Gravimetric Analysis. It further relates to metallic fluids or inks prepared from the dispersion and to the preparation of the dispersion and the metallic fluid or inks.
    Type: Application
    Filed: December 19, 2011
    Publication date: March 6, 2014
    Applicant: AGFA-GEVAERT NV
    Inventors: Xavier Andre, Dirk Bollen, Johan Loccufier
  • Patent number: 7129031
    Abstract: A green-sensitized black-and-white silver halide negative working photographic material comprising a support having thereon at least one light-sensitive silver halide emulsion layer containing tabular silver halide grains, further comprising in said emulsion layer or in a layer adjacent thereto, a heteroatomic sulfinic acid compound, a disulfide compound or a combination thereof, wherein each of said compounds has a solubilizing group having a pKa-value of 10 or less.
    Type: Grant
    Filed: June 18, 2004
    Date of Patent: October 31, 2006
    Assignee: Agfa-Gevaert
    Inventors: Johan Loccufier, Dirk Bollen
  • Publication number: 20050191589
    Abstract: A green-sensitized black-and-white silver halide negative working photographic material comprising a support having thereon at least one light-sensitive silver halide emulsion layer containing tabular silver halide grains, further comprising in said emulsion layer or in a layer adjacent thereto, a heteroatomic sulfinic acid compound, a disulfide compound or a combination thereof, wherein each of said compounds has a solubilizing group having a pKa-value of 10 or less.
    Type: Application
    Filed: June 18, 2004
    Publication date: September 1, 2005
    Inventors: Johan Loccufier, Dirk Bollen
  • Publication number: 20050003313
    Abstract: A blue-sensitized black-and-white silver halide negative working photographic material has been disclosed, wherein said material comprises a support having thereon at least one light-sensitive silver halide emulsion layer containing tabular silver halide grains and wherein the said material further comprises in at least one emulsion layer or in a non-light-sensitive layer adjacent thereto, a heteroatomic sulfinic acid compound, a disulfide compound or a combination thereof, wherein each of said compounds has a solubilizing group having a pKa-value of 10 or less.
    Type: Application
    Filed: June 18, 2004
    Publication date: January 6, 2005
    Inventor: Dirk Bollen
  • Patent number: 6579671
    Abstract: A recording material comprising a support and a thermosensitive element containing one or more of silver behenate, silver palmitate, and silver stearate, an organic reducing agent therefor in thermal working relationship therewith and a binder, wherein the silver behenate, palmitate, or stearate is not associated with mercury and/or lead ions, production processes for particles of substantially light-insensitive organic silver salt primarily comprising silver behenate, silver palmitate, or stearate, with described X-ray characteristics in the substantial absence of organic solvent.
    Type: Grant
    Filed: May 14, 2001
    Date of Patent: June 17, 2003
    Assignee: AGFA-Gevaert
    Inventors: Sabine Emmers, Bartholomeus Horsten, Ingrid Geuens, Yvan Gilliams, Dirk Bollen, Ivan Hoogmartens, Andre Bellens
  • Publication number: 20020150849
    Abstract: A recording material comprising a support and a thermosensitive element containing one or more of silver behenate, silver palmitate, and silver stearate, an organic reducing agent therefor in thermal working relationship therewith and a binder, wherein the silver behenate, palmitate, or stearate is not associated with mercury and/or lead ions, production processes for particles of substantially light-insensitive organic silver salt primarily comprising silver behenate, silver palmitate, or stearate, with described X-ray characteristics in the substantial absence of organic solvent.
    Type: Application
    Filed: May 14, 2001
    Publication date: October 17, 2002
    Applicant: Agfa-Gevaert
    Inventors: Sabine Emmers, Bartholomeus Horsten, Ingrid Geuens, Yvan Gilliams, Dirk Bollen, Ivan Hoogmartens, Andre Bellens
  • Patent number: 6214532
    Abstract: Method of preparing a photosensitive element containing a silver halide emulsion with homogeneous and thin tabular crystals, comprising the steps of: (1) forming silver halide nuclei by simultaneously adding an aqueous silver salt and a halide salt solution to a reaction vessel (a), containing an aqueous solution of a protective colloid, (2) transfering the dispersion of silver halide nuclei formed in vessel (a) to a mixing chaiber (b) and diluting said dispersion, (3) growing in a growth chamber (c) said nuclei of the diluted dispersion by adding and mixing an aqueous silver salt and a halide salt solution and collecting the grown crystals in reaction vessel (a) which is a part of a closed circuitry together with the mixing and growth chambers (b) and (c), (4) transfering said silver halide crystal dispersion to mixing chamber (b) and diluting the dispersion, (5) further growing the silver halide crystals in growth chamber (c) and collecting the silver halide crystals in reaction vessel a), (6) concent
    Type: Grant
    Filed: December 13, 1999
    Date of Patent: April 10, 2001
    Assignee: Agfa-Gevaert
    Inventor: Dirk Bollen
  • Patent number: 6159667
    Abstract: A recording material comprising a support and a thermosensitive element containing silver behenate, an organic reducing agent therefor in thermal working relationship therewith and a binder, wherein the silver behenate is not associated with mercury and/or lead ions and when the recording material is irradiated with a copper K.alpha..sub.1 X-ray source the ratio, normalized to a quantity of silver in the recording material of 1 g per m.sup.2 thereof, of the sum of the peak heights of the X-ray diffraction lines attributable to silver behenate at Bragg angles, 2.THETA., of 6.01.degree., 7.56.degree., 9.12.degree., 10.66.degree., 12.12.degree. and 13.62.degree. to the sum of the peak heights of the X-ray diffraction lines at Bragg angles, 2.THETA., of 25.60.degree., 35.16.degree. and 43.40.degree. of NIST standard 1976, rhombohedral Al.sub.2 O.sub.3, determined with the same X-ray diffractometer in the same state of adjustment, is greater than 0.
    Type: Grant
    Filed: March 17, 1999
    Date of Patent: December 12, 2000
    Assignee: Agfa-Gevaert
    Inventors: Sabine Emmers, Bartholomeus Horsten, Ingrid Geuens, Yvan Gilliams, Andre Bellens, Dirk Bollen, Ivan Hoogmartens
  • Patent number: 6127102
    Abstract: A recording material comprising a support and a thermosensitive element containing silver stearate, an organic reducing agent therefor in thermal working relationship therewith and a binder, wherein the silver stearate is not associated with mercury and/or lead ions and when the recording material is irradiated with a copper K.alpha..sub.1 X-ray source the ratio of the sum of the peak heights of the X-ray diffraction lines attributable to silver stearate at Bragg angles, 2.THETA., of 2.THETA., of 3.62.degree., 5.45.degree., 7.30.degree., 9.04.degree., 10.97.degree. and 12.71.degree. to the sum of the peak heights of the X-ray diffraction lines at Bragg angles, 2.THETA., of 25.60.degree., 35.16.degree. and 43.40.degree. of NIST standard 1976, rhombohedral Al.sub.2 O.sub.
    Type: Grant
    Filed: June 1, 1999
    Date of Patent: October 3, 2000
    Assignee: Agfa-Gevaert N.V.
    Inventors: Ingrid Geuens, Yvan Gilliams, Dirk Bollen, Yvan Hoogmartens, Andre Bellens
  • Patent number: 6114100
    Abstract: A recording material comprising a support and a thermosensitive element comprising silver palmitate, an organic reducing agent therefor in thermal working relationship therewith and a binder, wherein the silver palmitate is not associated with mercury and/or lead ions and when the recording material is irradiated with a copper K.alpha..sub.1 X-ray source the ratio of the sum of the peak heights of the X-ray diffraction lines attributable to silver palmitate at Bragg angles, 2.THETA., of 4.01.degree., 6.049.degree., 8.031.degree., 10.06.degree., 12.08.degree. and 14.09.degree. to the sum of the peak heights of the X-ray diffraction lines at Bragg angles, 2.THETA., of 25.60.degree., 35.16.degree. and 43.40.degree. of NIST standard 1976, rhombohedral Al.sub.2 O.sub.
    Type: Grant
    Filed: June 1, 1999
    Date of Patent: September 5, 2000
    Assignee: Agfa-Gevaert N.V.
    Inventors: Ingrid Geuens, Yvan Gilliams, Dirk Bollen, Yvan Hoogmartens, Andre Bellens
  • Patent number: 6096486
    Abstract: A recording material comprising a support and a thermosensitive element containing silver behenate, an organic reducing agent therefor in thermal working relationship therewith and a binder, wherein the silver behenate is not associated with mercury and/or lead ions and when the recording material is irradiated with a copper K.alpha..sub.1 X-ray source the ratio, normalized to a quantity of silver in the recording material of 1 g per m.sup.2 thereof, of the sum of the peak heights of the X-ray diffraction lines attributable to silver behenate at Bragg angles, 2.THETA., of 6.01.degree., 7.56.degree., 9.12.degree., 10.66.degree., 12.12.degree. and 13.62.degree. to the sum of the peak heights of the X-ray diffraction lines at Bragg angles, 2.THETA., of 25.60.degree., 35.16.degree. and 43.40.degree. of NIST standard 1976, rhombohedral Al.sub.2 O.sub.3, determined with the same X-ray diffractometer in the same state of adjustment, is greater than 0.
    Type: Grant
    Filed: December 10, 1997
    Date of Patent: August 1, 2000
    Assignee: Agfa-Gevaert
    Inventors: Sabine Emmers, Bartholomeus Horsten, Ingrid Geuens, Yvan Gilliams, Andre Bellens, Dirk Bollen, Ivan Hoogmartens