Patents by Inventor Andre R. Studart

Andre R. Studart 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: 11872533
    Abstract: The invention relates to a device (1) for generating droplets (30) comprising a plurality of channels (20), wherein each channel (20) extends from an inlet (201) along a respective longitudinal axis (L) to an outlet (202), wherein said device (1) comprises a plurality of layers (10) of a substrate material arranged in a stack (100), wherein each layer (10) comprises a first side (101) and a second side (102) facing away from each other, and wherein said first side (101) of each layer (10) comprises a plurality of grooves (103), wherein said channels (20) are formed by said grooves (103) of said first side (101) of a respective layer (10) of said stack (100) and said second side (102) of a respective adjacent layer (10) of said stack (100). The invention further relates to a method for generating droplets (30) and a fabrication method of the device (1).
    Type: Grant
    Filed: March 22, 2018
    Date of Patent: January 16, 2024
    Assignee: ETH ZURICH
    Inventors: André R. Studart, Alessandro Ofner, Pascal Schwendimann
  • Patent number: 11858197
    Abstract: An additive manufacturing process for the manufacture of an object in an additive manufacturing apparatus, wherein the object is formed by one or several individual solid filamentous units. The additive manufacturing process comprises the steps of discharging a polymer composition in a molten state from a nozzle of a print head, thereby imparting an orienting flow on the polymer composition in a molten state being discharged from the nozzle of the print head and depositing said discharged polymer composition in a molten state along at least one predefined path and allowing the thus formed one or several filamentous units to solidify such as to form one or several solid filamentous units of the object to be manufactured. Optionally, the previous step may be repeated until the object is formed. The polymer composition comprises a thermotropic liquid crystal polymer as the polymer component of the polymer composition.
    Type: Grant
    Filed: June 21, 2019
    Date of Patent: January 2, 2024
    Assignee: ETH Zürich
    Inventors: Silvan Gantenbein, Kunal Masania, Theo Tervoort, André R. Studart, Jens P. W. Sesseg, Wilhelm Woigk
  • Patent number: 11787958
    Abstract: An additive manufacturing ink composition includes a polysiloxane bearing a plurality of alkenyl groups and a crosslinking agent bearing a plurality of thiol groups. The polysiloxane and the crosslinking agent form an emulsion.
    Type: Grant
    Filed: September 17, 2018
    Date of Patent: October 17, 2023
    Assignee: ETH Zurich
    Inventors: André R. Studart, Manuel Schaffner, Lucas Raphael Pianegonda
  • Publication number: 20210323219
    Abstract: An additive manufacturing process for the manufacture of an object in an additive manufacturing apparatus, wherein the object is formed by one or several individual solid filamentous units, said additive manufacturing process comprises the steps of, discharging a polymer composition in a molten state from a nozzle of a print head, thereby imparting an orienting flow on the polymer composition in a molten state being discharged from the nozzle of the print head and depositing said discharged polymer composition in a molten state along at least one predefined, preferably horizontal, path and allowing the thus formed one or several filamentous units to solidify such as to form one or several solid filamentous units of the object to be manufactured; optionally repeating the previous step until the object is formed; wherein said polymer composition comprises a thermotropic liquid crystal polymer as a polymer component of the polymer composition and the solid filamentous units are characterized in that the smal
    Type: Application
    Filed: June 21, 2019
    Publication date: October 21, 2021
    Applicant: ETH Zürich
    Inventors: Silvan GANTENBEIN, Kunal MASANIA, Theo TERVOORT, André R. STUDART, Jens SESSEG, Wilhelm WOIGK
  • Publication number: 20210198140
    Abstract: The present invention provides additive manufacturing compositions, also referred as “inks” in the field of additive manufacturing, which can be fine-tuned with respect to porosity by varying the intensity of the photopolymerisation light source and which can further be used to obtain objects out of glasses, ceramics or glass-ceramics and their respective alloys.
    Type: Application
    Filed: August 28, 2019
    Publication date: July 1, 2021
    Applicant: ETH Zürich
    Inventors: David MOORE, Lorenzo BARBERA, Kunal MASANIA, André R. STUDART
  • Publication number: 20210130244
    Abstract: Described is a method of preparing foams, wherein a suspension comprising an aqueous liquid, particles and at least one surfactant is provided, wherein the at least one surfactant at least partially hydrophobizes a surface of the particles, and wherein the suspension comprising the particles having the at least partially hydrophobized surface is foamed. The at least one surfactant is selected from surfactants having a backbone chain comprising at least nine carbon atoms, the at least one surfactant preferably being an amphiphilic molecule consisting of a tail coupled to a head group, wherein the tail comprises the backbone chain comprising at least nine carbon atoms.
    Type: Application
    Filed: July 1, 2019
    Publication date: May 6, 2021
    Inventors: André R. STUDART, Elena TERVOORT, Patrick RÜHS, Jonas FREITAG, Ka Lie Bettina TRAN, Julia CARPENTER, Clara MINAS, Etienne JEOFFROY
  • Publication number: 20200216692
    Abstract: An additive manufacturing ink composition includes a polysiloxane bearing a plurality of alkenyl groups and a crosslinking agent bearing a plurality of thiol groups. The polysiloxane and the crosslinking agent form an emulsion.
    Type: Application
    Filed: September 17, 2018
    Publication date: July 9, 2020
    Inventors: André R. Studart, Manuel Schaffner, Lucas Raphael Pianegonda
  • Publication number: 20200023324
    Abstract: The invention relates to a device (1) for generating droplets (30) comprising a plurality of channels (20), wherein each channel (20) extends from an inlet (201) along a respective longitudinal axis (L) to an outlet (202), wherein said device (1) comprises a plurality of layers (10) of a substrate material arranged in a stack (100), wherein each layer (10) comprises a first side (101) and a second side (102) facing away from each other, and wherein said first side (101) of each layer (10) comprises a plurality of grooves (103), wherein said channels (20) are formed by said grooves (103) of said first side (101) of a respective layer (10) of said stack (100) and said second side (102) of a respective adjacent layer (10) of said stack (100). The invention further relates to a method for generating droplets (30) and a fabrication method of the device (1).
    Type: Application
    Filed: March 22, 2018
    Publication date: January 23, 2020
    Applicant: ETH ZURICH
    Inventors: André R. STUDART, Alessandro OFNER, Pascal SCHWENDIMANN
  • Publication number: 20190248707
    Abstract: The invention relates to a process for making a ceramic body that comprises providing particles of a metal salt precursor material wetted by a liquid medium. The particles are characterized by a grain size of below 600 nm, and the precursor material has a solubility in the liquid medium of at least 10?5 mol/L. A pressure of ?100 MPa is applied at a temperature of below 100° C., rendering a material of high theoretical density values previously unattainable at low temperatures. The invention further relates to a calcium carbonate ceramic material of the vaterite isomorph having a density of the material ?1.76 g/cm3 and a Modulus of rupture ?30 MPa, and to a calcium phosphate ceramic material consisting of the monetite isomorph with ?2.5 g/cm3 density and a Modulus of rupture ?18 MPa.
    Type: Application
    Filed: July 4, 2017
    Publication date: August 15, 2019
    Applicant: ETH ZÜRICH
    Inventors: Florian BOUVILLE, Andre R. STUDART
  • Publication number: 20150218337
    Abstract: A reinforced composite material based on a polymer matrix with reinforcement particles embedded therein. The polymer matrix is based on a polymer with soft and hard domains, and the reinforcement particles comprise inorganic nano-platelets in the polymer matrix in a volume fraction in the range of 0.01%-50%, the inorganic nano-platelets have a thickness in the range of 0.3-50 nm, with the proviso that the largest length and width is at least twice as large as the thickness; as well as inorganic micro-platelets in a volume fraction in the range of 1%-90%, wherein the inorganic micro-platelets have a thickness in the range of 10 nm-100 ?m, with the proviso that the largest length and width is at least twice as large as the thickness. Also disclosed are multilayer structures based on such layers, methods for making such multilayer structures and uses thereof.
    Type: Application
    Filed: August 30, 2013
    Publication date: August 6, 2015
    Applicant: ETH ZURICH
    Inventors: Andre R. Studart, Randall M. Erb, Rafael Augusto Nicolosi Libanori
  • Patent number: 8975301
    Abstract: Described is a method to prepare wet foams exhibiting long-term stability wherein colloidal particles are used to stabilize the gas-liquid interface, said particles being initially inherently partially lyophobic particles or partially lyophobized particles having mean particle sizes from 1 nm to 20 ?m. In one aspect, the partially lyophobized particles are prepared in-situ by treating initially hydrophilic particles with amphiphilic molecules of specific solubility in the liquid phase of the suspension.
    Type: Grant
    Filed: December 12, 2005
    Date of Patent: March 10, 2015
    Assignee: ETH Zurich
    Inventors: Ludwig J. Gauckler, Andre R. Studart, Elena Tervoort, Urs T. Gonzenbach, Ilke Akartuna
  • Publication number: 20120107601
    Abstract: The present invention generally relates to systems and methods for using particle templating, e.g., to produce composites, discrete particles, or the like. In some embodiments, the present invention generally relates to the production of particles using the interstitial spaces between templating elements in a template structure. For example, a plurality of templating elements, which can include colloidal particles, may be arranged to form a template structure. The interstices of the templating elements can provide regions in which a fluid may be introduced. The fluid may be hardened (e.g., solidified) in some cases, e.g., to form a composite comprising the templating elements and the interstitial segments. In certain embodiments, the template structure may then be broken down to release the hardened fluid, e.g., as a plurality of discrete particles.
    Type: Application
    Filed: March 12, 2010
    Publication date: May 3, 2012
    Applicants: President and Fellows of Harvard College
    Inventors: David A. Weitz, Roland S. Weitz, Roland S. Koltzenburg, Jens B. Rieger, Andre R. Studart, James N. Wilking