Patents by Inventor Mircea Lupa

Mircea Lupa 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).

  • Hybrid surface modelling with subdivision surfaces and NURBS surfaces
    Patent number: 11928391
    Abstract: Methods, systems, and apparatus, including medium-encoded computer program products, for computer aided design of structures include, in one aspect, a method for hybrid surface modelling with subdivision surfaces and NURBS surfaces, the method including: modifying a control mesh (in accordance with received input) of a subdivision surface model including a topological control that tracks mesh to NURBS relationships for a limit surface of the subdivision surface, and stored NURBS surfaces representing the limit surface; obtaining an updated limit surface from the modified control mesh; finding at least one modified NURBS surface in the stored NURBS surfaces in accordance with relationship(s) tracked in the topological control; and for each modified NURBS surface, updating the modified NURBS surface with its corresponding replacement NURBS surface, and applying at least one geometric modification (associated with a modified NURBS surface in a history procedures system) to the associated modified NURBS surface a
    Type: Grant
    Filed: April 1, 2020
    Date of Patent: March 12, 2024
    Assignee: Autodesk, Inc.
    Inventor: Dan Mircea Lupas
  • HYBRID SURFACE MODELLING WITH SUBDIVISION SURFACES AND NURBS SURFACES
    Publication number: 20200320228
    Abstract: Methods, systems, and apparatus, including medium-encoded computer program products, for computer aided design of structures include, in one aspect, a method for hybrid surface modelling with subdivision surfaces and NURBS surfaces, the method including: modifying a control mesh (in accordance with received input) of a subdivision surface model including a topological control that tracks mesh to NURBS relationships for a limit surface of the subdivision surface, and stored NURBS surfaces representing the limit surface; obtaining an updated limit surface from the modified control mesh; finding at least one modified NURBS surface in the stored NURBS surfaces in accordance with relationship(s) tracked in the topological control; and for each modified NURBS surface, updating the modified NURBS surface with its corresponding replacement NURBS surface, and applying at least one geometric modification (associated with a modified NURBS surface in a history procedures system) to the associated modified NURBS surface a
    Type: Application
    Filed: April 1, 2020
    Publication date: October 8, 2020
    Inventor: Dan Mircea Lupas
  • Barbecue grill
    Patent number: D340835
    Type: Grant
    Filed: August 21, 1991
    Date of Patent: November 2, 1993
    Inventors: Mircea Lupa, John Coroama