Patents by Inventor Petra Mela

Petra Mela 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: 20240100771
    Abstract: A system for electro-writing of a polymer melt comprises a print-head and a feed mechanism configured to controllably feed solid polymer base material towards the print-head, wherein the print-head comprises a nozzle, a heater and an insulating spacer, wherein the print-head is configured to eject the polymer melt via the nozzle, wherein the nozzle is configured to be held at a selectable electric potential, wherein the heater is arranged in the print-head and proximate the nozzle, wherein the heater is configured to heat the solid polymer base material beyond its melting point to create the polymer melt in the print-head, wherein insulating spacer is arranged between the heater and the nozzle, wherein the insulating spacer electrically insulates the heater and the nozzle, and wherein the insulating spacer is at least partially surrounded by the heater.
    Type: Application
    Filed: December 7, 2021
    Publication date: March 28, 2024
    Inventors: Kilian MÜLLER, Sarah BURKHARDT, Petra MELA, Stefan LEONHARDT, Sebastian Tobias PAMMER, Johannes SCHWEIGER
  • Publication number: 20240001606
    Abstract: A system for electro-spinning/writing of a polymer material, the system comprising a print-head configured to eject the polymer material via a nozzle, a collector configured to receive the polymer material ejected from the nozzle, a displacement assembly configured to adjust a distance between the print-head and the collector, and a vat containing or configured to contain a liquid, wherein the vat is further configured to receive the collector, wherein the displacement assembly is configured to retract the collector and at least a part of the polymer material received by the collector into the liquid in the vat in accordance with a height of the received polymer material.
    Type: Application
    Filed: December 1, 2021
    Publication date: January 4, 2024
    Inventors: Kilian MÜLLER, Sarah BURKHARDT, Stefan LEONHARDT, Sebastian Tobias PAMMER, Petra MELA, Johannes SCHWEIGER
  • Publication number: 20220257371
    Abstract: The disclosure relates to a melt electrowritten soft tissue scaffold and methods of making the same. The scaffold has a body having a first region comprising a first set of fibres and a second set of fibres, the first region being anisotropic. The first set of fibres are arranged approximately parallel relative to one another, each fibre of the first set of fibres has a serpentine arrangement forming peaks and troughs, the first set of fibres has a first Young's modulus. The second set of fibres are arranged approximately parallel relative to one another, the second set of fibres being arranged transversely relative to the first set of fibres, each fibre of the second set of fibres has a serpentine arrangement forming peaks and troughs, the second set of fibres has a second Young's modulus. The first Young's modulus is unequal to the second Young's modulus. In some embodiments the body further comprises a second region extending from the first region. The second region supports the first region.
    Type: Application
    Filed: October 15, 2021
    Publication date: August 18, 2022
    Inventors: Dietmar HUTMACHER, Juan Elena PARDO, Onur BAS, Navid TOOSISAIDY, Petra MELA
  • Patent number: 7655383
    Abstract: The present invention relates to a photochemical method for manufacturing nanometrically surface-decorated substrates, i.e. the creation of periodic and aperiodic patterns of highly ordered inorganic nanostructures on a substrate. This method is based on the selective photochemical modification of a self-assembled monolayer of metal compound loaded polymer core-shell systems on widely variable substrates. Light exposure through an appropriate mask causes selective chemical modification of the polymer core shell system. By subsequently placing the substrate in an appropriate chemical solution that eradicates the non-modified polymer, the pattern given by the used mask is reproduced on the surface. Finally, the remaining organic matrix is removed and metal salt is transformed to the single metal or metal oxide nanodots by means of gas plasma treatment.
    Type: Grant
    Filed: August 24, 2006
    Date of Patent: February 2, 2010
    Assignee: DWI an der RWTH
    Inventors: Petra Mela, Marcell Ott, Joachim Spatz, Blazej Gorzolnik, Martin Möller
  • Publication number: 20090308842
    Abstract: The present invention relates to a photochemical method for manufacturing nanometrically surface-decorated substrates, i.e. the creation of periodic and aperiodic patterns of highly ordered inorganic nanostructures on a substrate. This method is based on the selective photochemical modification of a self-assembled monolayer of metal compound loaded polymer core-shell systems on widely variable substrates. Light exposure through an appropriate mask causes selective chemical modification of the polymer core shell system. By subsequently placing the substrate in an appropriate chemical solution that eradicates the non-modified polymer, the pattern given by the used mask is reproduced on the surface. Finally, the remaining organic matrix is removed and metal salt is transformed to the single metal or metal oxide nanodots by means of gas plasma treatment.
    Type: Application
    Filed: August 24, 2006
    Publication date: December 17, 2009
    Inventors: Petra Mela, Marcell Ott, Joachim Spatz, Blazej Gorzolnik, Martin Moller