Patents by Inventor Jan Bouwstra

Jan Bouwstra 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: 20180135167
    Abstract: A transparent sheet material comprising an organic, polymeric substrate and inorganic layers on each side of the substrate, wherein the overall thickness of the inorganic layer(s) on each side of the substrate is less than 5nm
    Type: Application
    Filed: December 14, 2015
    Publication date: May 17, 2018
    Inventors: Jan Bouwstra, Hindrik De Vries, Serguei Starostine
  • Publication number: 20170350006
    Abstract: A method for preparing a transparent sheet material comprising an organic, polymeric substrate and inorganic layers on each side of the substrate, the method comprising the steps of: a) providing an apparatus for generating a glow discharge plasma, said apparatus comprising at least two opposing electrodes, a power supply for the electrodes and a treatment space between the electrodes; b) providing the treatment space with a gas mixture at about atmospheric pressure, the gas mixture comprising a reactive gas and a precursor; and c) moving a transparent substrate through the treatment space comprising the gas mixture at an average speed of at least 1 m/min while applying an electrical potential across the electrodes, thereby generating a glow discharge plasma in the treatment space and depositing an inorganic layer on one or both sides of the substrate; wherein the electrodes apply a discharge energy to the substrate of less than 25 J/cm2.
    Type: Application
    Filed: December 14, 2015
    Publication date: December 7, 2017
    Inventors: Jan Bouwstra, Hindrik De Vries, Serguei Starostine
  • Publication number: 20080107666
    Abstract: The invention relates to recombinant collagen like polypeptides that are not glycosylated thereby reducing the immunogenicity of recombinant collagen-like polypeptides while at the same time preventing or reducing phosphorylation of these polypeptides. Such non-glycosylated polypeptides may be used in a wide variety of medical or cosmetic applications.
    Type: Application
    Filed: February 22, 2006
    Publication date: May 8, 2008
    Inventors: Andries Johannes van Es, Jan Bouwstra, Peter Franciscus van Asten
  • Publication number: 20070274983
    Abstract: The present invention provides a method and composition for the treatment and/or prevention of infection, said method comprising orally administering a composition to a mammal, said composition comprising a galactose containing indigestible oligosaccharide and immunoglobulin from the milk or colostrum of hyperimmunized cows.
    Type: Application
    Filed: August 24, 2005
    Publication date: November 29, 2007
    Inventors: Sebastianus Gerardus Kluijtmans, Akihiko Ikegawa, Jan Bouwstra
  • Publication number: 20070031501
    Abstract: The invention relates to the use of gelatin-like proteins, or polypeptides, with an increased calculated glass transition temperature as stabilisers in lyophilized biological or pharmaceutical compositions.
    Type: Application
    Filed: August 4, 2004
    Publication date: February 8, 2007
    Inventors: Andries Van Es, Jan Bouwstra, Yuzo Toda
  • Publication number: 20070004034
    Abstract: The invention relates to a support for culturing cells, in particular to microcarriers coated with gelatine or gelatine-like proteins. Such microcarriers serve as support for culturing anchorage dependent cells. In particular the invention relates to a process for the preparation of a cell culture support comprising the step of coating a microcarrier bead with gelatine or gelatine-like protein, said gelatine or gelatine-like protein having a molecular weight of about 40 kDa to about 200 kDa.
    Type: Application
    Filed: December 23, 2003
    Publication date: January 4, 2007
    Inventors: Jan Bouwstra, Andries van Es, Yuzo Toda
  • Publication number: 20060241032
    Abstract: The invention concerns a cell support comprising an RGD-enriched gelatine that has a more even distribution of RGD sequences than occurring in a natural gelatine and with a minimum level of RGD sequences. More precise the percentage of RGD sequences related to the total number of amino acids is at least 0.4 and if the RGD-enriched gelatine comprises 350 amino acids or more, each stretch of 350 amino acids contains at least one RGD motif. Preferably the RGD-enriched gelatines are prepared by recombinant technology, and have a sequence that is derived from a human gelatine or collagen amino acid sequence. The invention also relates to RGD-enriched gelatines that are used for attachment to integrins. In particular The RGD-enriched gelatines of the invention are suitable for coating a cell culture support for growing anchordependant cell types.
    Type: Application
    Filed: March 26, 2004
    Publication date: October 26, 2006
    Inventors: Jan Bouwstra, Andries Van Es, Yuzo Toda
  • Publication number: 20060204511
    Abstract: The invention relates to methods for preparing vaccine and pharmaceutical compositions comprising recombinant or synthetic gelatin as a stabiliser and to the vaccine and pharmaceutical formulations themselves, as prepared by these methods.
    Type: Application
    Filed: August 4, 2004
    Publication date: September 14, 2006
    Inventors: Jan Bouwstra, Yuzo Toda, Andries Van Es
  • Publication number: 20060204457
    Abstract: This invention relates to a cosmetic composition for protection against UV radiation and its detrimental effects comprising a cosmetically and dermatologically acceptable carrier and a UV absorbing compound, not being flavonoid, which is covalently linked to a carrier molecule.
    Type: Application
    Filed: February 25, 2004
    Publication date: September 14, 2006
    Inventors: Yuzo Toda, Sebastianus Gerardus Kluijtmans, Jan Bouwstra
  • Publication number: 20060181592
    Abstract: The present invention relates to a recording medium, in particular an ink-jet recording medium of photographic quality that has excellent ink absorption speed, good drying characteristics and a good image printing quality. According to the present invention, an ink-jet recording medium is provided, comprising a support and an ink-receiving layer which has an asymmetric membrane structure comprising a dense top layer adjacent to a microporous sublayer, said ink-receiving layer comprising at least one water-swellable polymer. The present invention is further directed to methods for obtaining such a medium.
    Type: Application
    Filed: January 26, 2006
    Publication date: August 17, 2006
    Applicant: Fuji Photo Film B.V.
    Inventors: Iskandar Gandasasmita, Andries van Es, Jan Bouwstra, Yoichiro Kamiyama, Yuzo Toda, Antonius Josephus Kemperman, Geert Koops
  • Publication number: 20060081566
    Abstract: The present invention is directed to a method and arrangement for controlling a glow discharge plasma in a gas or gas mixture under atmospheric conditions, in a plasma discharge space comprising at least two spaced electrodes (2), wherein at least one plasma pulse having an absolute pulse maximum is generated by applying an AC plasma energizing voltage to the electrodes (2) causing a plasma current and a displacement current. The plasma is controlled by providing a relative decrease of the displacement current after the pulse maximum. In a preferred embodiment, the energizing voltage is applied through a series circuit of a choke coil (3) and a non-saturable inductor (4).
    Type: Application
    Filed: August 12, 2005
    Publication date: April 20, 2006
    Applicant: Fuji Photo Film B.V.
    Inventors: Hindrik DeVries, Yoichiro Kamiyama, Jan Bouwstra, Mauritius Van de Sanden, Eugen Aldea, Paul Peeters
  • Publication number: 20060083760
    Abstract: The invention provides oil-in-water emulsions comprising recombinant collagen-like polymer in an amount sufficient to act as stabiliser of the emulsion. The polymer is especially a polypeptide which is free of helix structure, has an isoelectric point at least 0.5 pH units removed from the pH of the oil-in-water emulsion. Furthermore, amphiphilic recombinant collagen-like polymers are provided for use in oil-in-water emulsions. The amphiphilic polymers are polar at one end as a result of a relative abundance of polar amino acids, and apolar at the other end as a result of a relative abundance of apolar amino acids.
    Type: Application
    Filed: September 26, 2003
    Publication date: April 20, 2006
    Inventors: Joseph Olijve, Jan Bouwstra, Frederik Wolf De, Marc Werten, Hendrik Wisselink, Richele Wind, Tanja Bosch Van Den, Yuzo Toda
  • Publication number: 20060022606
    Abstract: The present invention provides an arrangement and method for generating a uniform and stable plasma. The arrangement comprises a discharge space (7) between at least a pair of electrodes (1, 2), which electrodes (1, 2) are arranged for providing an electric field and for generating a plasma in the electric field. At least one of the electrodes (1) has a boundary surface (6) with the discharge space (7). The boundary surface is comprised of one or more alternately arranged conductive (4) and insulating regions (5). The invention further relates to an electrode (1) for use in the arrangement described. The invention may, for example, be used in dielectric barrier discharge configurations, or in arrangements for generating plasmas at atmospheric pressures, or for generating plasmas at low temperatures, such as generating atmospheric pressure glow plasmas (APG) for material processing or surface (3) treatment purposes.
    Type: Application
    Filed: August 13, 2004
    Publication date: February 2, 2006
    Inventors: Hindrik DeVries, Jan Bouwstra, Eugen Aldea, Mauritius Van De Sanden
  • Publication number: 20050150602
    Abstract: Method of generating an atmospheric pressure glow discharge plasma (APG), wherein said plasma is generated in a discharge space formed between at least one first electrode surface and at least one second electrode surface. The method comprises at least the steps of supplying a gaseous substance to said discharge space and powering said first and said second electrode surface for generating said plasma. Said step of supplying a gaseous substance to the discharge space comprises providing at least one intermediate gas supply stream from at least one of said first and second electrode surfaces. The step of supplying said gaseous substance to the discharge space further comprises providing a main gas supply stream for forcing the at least one intermediate gas supply stream in a direction along the first and second electrode surfaces.
    Type: Application
    Filed: August 31, 2004
    Publication date: July 14, 2005
    Inventors: Hindrik DeVries, Jan Bouwstra
  • Publication number: 20050119170
    Abstract: The invention relates to compositions suitable for plasma substitution comprising as a plasma expander a recombinant gelatin-like protein. Characteristic is that the gelatin-like protein essentially is free of hydroxyproline. This absence of hydroxyproline prevents the composition from gelling and thus allows the use of high-molecular weight proteins in order to establish a suitable colloid osmotic pressure. Specific advantage of the gelatin-like proteins is that these avoid the risk of anaphylactic shock that exists in conjunction with the use of commercially available preparations.
    Type: Application
    Filed: March 6, 2002
    Publication date: June 2, 2005
    Inventors: Jan Bouwstra, Yuzo Toda
  • Publication number: 20050101531
    Abstract: The invention relates to compositions suitable for plasma substitution comprising as a plasma expander a recombinant gelatin-like protein. Characteristic is that the gelatin-like protein can be a monomer or a polymer like a dimer, trimer or a tetramer of a human recombinant gelatin-like protein having an isolectric point of less than 8. The resulting gelatin-like proteins provide a method to control the clearance rate of a plasma expander by its molecular weight. Preferably the gelatin-like proteins have a low hydroxyproline content which prevents the composition from gelling and thus allows the use of high-molecular weight proteins in order to establish a suitable colloid osmotic pressure. An additional advantage of the gelatin-like proteins is that these avoid the risk of anaphylactic shock that exists in conjunction with the use of commercially available preparations.
    Type: Application
    Filed: September 10, 2003
    Publication date: May 12, 2005
    Inventors: Jan Bouwstra, Yuzo Toda