Patents by Inventor Petrus Johannes Geutjes

Petrus Johannes Geutjes 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: 10266809
    Abstract: A process for making an oligo(alkylene glycol) functionalized co-polyisocyanopeptide, wherein the process includes the steps of: i) copolymerizing a first comonomer of an oligo(alkylene glycol) functionalized isocyanopeptide grafted with a linking group and a second comonomer of a non-grafted oligo(alkylene glycol) functionalized isocyanopeptide, wherein the molar ratio between the first comonomer and the second comonomer is 1:500 and 1:30 and ii) adding a reactant of a spacer unit and a cell adhesion factor to the copolymer obtained by step i), wherein the spacer unit is represented by general formula A-L-B, wherein the linking group and group A are chosen to react and form a first coupling and the cell adhesion factor and group B are chosen to react and form a second coupling, wherein the first coupling and the second coupling are independently selected from the group consisting of alkyne-azide coupling, dibenzocyclooctyne-azide coupling, oxanorbornmadiene-based-azide couplings, vinylsulphone-thiol coupling
    Type: Grant
    Filed: July 16, 2014
    Date of Patent: April 23, 2019
    Assignee: STICHTING KATHOLIEKE UNIVERSITEIT
    Inventors: Alan Edward Rowan, Zaskia Hillet Eksteen Akeroyd, Christopher Wilson, Petrus Johannes Geutjes, Wouter F. J. Feitz, Egbert Oosterwijk
  • Publication number: 20160137977
    Abstract: A process for making an oligo(alkylene glycol) functionalized co-polyisocyanopeptide, wherein the process includes the steps of: i) copolymerizing a first comonomer of an oligo(alkylene glycol) functionalized isocyanopeptide grafted with a linking group and a second comonomer of a non-grafted oligo(alkylene glycol) functionalized isocyanopeptide, wherein the molar ratio between the first comonomer and the second comonomer is 1:500 and 1:30 and ii) adding a reactant of a spacer unit and a cell adhesion factor to the copolymer obtained by step i), wherein the spacer unit is represented by general formula A-L-B, wherein the linking group and group A are chosen to react and form a first coupling and the cell adhesion factor and group B are chosen to react and form a second coupling, wherein the first coupling and the second coupling are independently selected from the group consisting of alkyne-azide coupling, dibenzocyclooctyne-azide coupling, oxanorbornmadiene-based-azide couplings, vinylsulphone-thiol coupling
    Type: Application
    Filed: July 16, 2014
    Publication date: May 19, 2016
    Inventors: Alan Edward ROWAN, Zaskia Hillet EKSTEEN AKEROYD, Christopher WILSON, Petrus Johannes GEUTJES, Wouter F.J. FEITZ, Egbert OOSTERWIJK
  • Publication number: 20090274734
    Abstract: Described is a method for obtaining hollow particles, having a particle wall and a particle lumen, the particle having dimensions of between 1 nm and 100 ?m, from a mixture comprising a liquid medium comprising at least one colloid or solute, the method comprising freezing said mixture and lyophilising the obtained frozen mixture, characterised in that a volume of at least 0.1 ?l of the mixture is subjected to a freezing step comprising: (a) (1) quench freezing the mixture resulting in a quench frozen mixture, and (2) incubating said quench frozen mixture at a temperature above the quench freezing temperature and below the melting point of the liquid medium, orb) (1) reducing the temperature of the mixture at a rate of 1 to 100° C./minute to below the freezing temperature of the mixture and (2) incubating said frozen mixture at a temperature above the temperature of the mixture and below the melting point of the liquid medium.
    Type: Application
    Filed: December 2, 2005
    Publication date: November 5, 2009
    Applicant: Stichting Katholieke Universiteit
    Inventors: Wilhelmina Francisca Daamen, Petrus Johannes Geutjes, Antonius Henricus Minardus Severus Maria Van Kuppevelt