Patents by Inventor Hans Wicher Kuijper

Hans Wicher Kuijper 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).

  • Nerve cap and production thereof
    Patent number: 10850004
    Abstract: The invention is directed to a nerve cap for covering a nerve stump, comprising a tubular body with a closed end and an open end and essentially consisting of biodegradable polymeric material to prevent or treat symptoms caused by neuroma. The polymeric material preferably comprises a poly(DL-lactide-co-?-caprolactone) copolymer obtained by the copolymerizaton of DL-lactide and ?-caprolactone, which copolymer has a lactide content of 51-75 mol %.
    Type: Grant
    Filed: March 7, 2016
    Date of Patent: December 1, 2020
    Assignee: Polyganics IP B.V.
    Inventors: Pieter van den Berg, Hans Wicher Kuijper, Leendert Willem Schwab, Mariëtta Johanna Olga Elizabeth Bertleff, Harmen Hendrikus de Vries
  • Nerve Cap and Production Thereof
    Publication number: 20200289704
    Abstract: The invention is directed to a nerve cap for covering a nerve stump, comprising a tubular body with a closed end and an open end and essentially consisting of biodegradable polymeric material to prevent or treat symptoms caused by neuroma. The polymeric material preferably comprises a poly(DL-lactide-co-?-caprolactone) copolymer obtained by the copolymerizaton of DL-lactide and ?-caprolactone, which copolymer has a lactide content of 51-75 mol %.
    Type: Application
    Filed: May 8, 2020
    Publication date: September 17, 2020
    Inventors: Pieter van den Berg, Hans Wicher Kuijper, Leendert Willem Schwab, Mariëtta Johanna Olga Elizabeth Bertleff, Harmen Hendrikus de Vries
  • Nerve Cap and Production Thereof
    Publication number: 20180339083
    Abstract: The invention is directed to a nerve cap for covering a nerve stump, comprising a tubular body with a closed end and an open end and essentially consisting of biodegradable polymeric material to prevent or treat symptoms caused by neuroma. The polymeric material preferably comprises a poly(DL-lactide-co-?-caprolactone) copolymer obtained by the copolymerizaton of DL-lactide and ?-caprolactone, which copolymer has a lactide content of 51-75 mol %.
    Type: Application
    Filed: March 7, 2016
    Publication date: November 29, 2018
    Inventors: Pieter van den Berg, Hans Wicher Kuijper, Leendert Willem Schwab, Mariëtta Johanna Olga Elizabeth Bertleff, Harmen Hendrikus de Vries
  • DL-lactide-?-caprolactone copolymers
    Patent number: 8309137
    Abstract: The present invention relates to specific DL-lactide-?-caprolactone copolymers and the application of these polymers in the production of biodegradable medical applications. According to the present invention a polymeric material comprising poly(DL-lactide-co-?-caprolactone) is provided, which is obtained by the copolymerization of DL-lactide and ?-caprolactone, having a lactide content of 51-75 mol %, most preferably of 62-69 mol %.
    Type: Grant
    Filed: July 22, 2010
    Date of Patent: November 13, 2012
    Assignee: Polyganics BV
    Inventors: Catharina Everdina Hissink, Theodorus Adrianus Cornelius Flipsen, Hans Wicher Kuijper, Rob Steendam
  • DL-Lactide-Epsilon-Caprolactone Copolymers
    Publication number: 20100312340
    Abstract: The present invention relates to specific DL-lactide-?-caprolactone copolymers and the application of these polymers in the production of biodegradable medical applications. According to the present invention a polymeric material comprising poly(DL-lactide-co-?-caprolactone) is provided, which is obtained by the copolymerization of DL-lactide and ?-caprolactone, having a lactide content of 51-75 mol %, most preferably of 62-69 mol %. The materials of the present invention have excellent mechanical properties and may be used to provide articles for medical application, in particular nerve guides.
    Type: Application
    Filed: July 22, 2010
    Publication date: December 9, 2010
    Applicant: Polyganics BV
    Inventors: Catharina Everdina Hissink, Theodorus Adrianus C. Flipsen, Hans Wicher Kuijper, Rob Steendam
  • DL-lactide-?-coprolactone copolymers
    Patent number: 7785628
    Abstract: The present invention relates to specific DL-lactide-?-caprolactone copolymers and the application of these polymers in the production of biodegradable medical applications. According to the present invention a polymeric material comprising poly(DL-lactide-co-?-caprolactone) is provided, which is obtained by the copolymerization of DL-lactide and ?-caprolactone, having a lactide content of 51-75 mol %, most preferably of 62-69 mol %. The materials of the present invention have excellent mechanical properties and may be used to provide articles for medical application, in particular nerve guides.
    Type: Grant
    Filed: December 2, 2002
    Date of Patent: August 31, 2010
    Assignee: Polyganics BV
    Inventors: Catharina Everdina Hissink, Theodorus Adrianus C. Flipsen, Hans Wicher Kuijper, Rob Steendam
  • DL-lactide-epsilon-coprolactone copolymers
    Publication number: 20030147934
    Abstract: The present invention relates to specific DL-lactide-&egr;-caprolactone copolymers and the application of these polymers in the production of biodegradable medical applications. According to the present invention a polymeric material comprising poly(DL-lactide-co-&egr;-caprolactone) is provided, which is obtained by the copolymerization of DL-lactide and &egr;-caprolactone, having a lactide content of 51-75 mol %, most preferably of 62-69 mol %.
    Type: Application
    Filed: December 2, 2002
    Publication date: August 7, 2003
    Applicant: Polyganics B.V.
    Inventors: Catharina Everdina Hissink, Theodorus Adrianus C. Flipsen, Hans Wicher Kuijper, Rob Steendam