Patents by Inventor A. Perdikaris

A. Perdikaris 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: 20230214661
    Abstract: Supervised operator learning is an emerging machine learning paradigm with applications to modeling the evolution maps of spatio-temporal dynamical systems and approximating general black-box relationships between functional data. We propose a novel operator learning method, LOCA (Learning Operators with Coupled Attention), motivated from the attention mechanism. The input functions are mapped to a finite set of features which are then averaged with attention weights that depend on the output query locations. By coupling these attention weights together with an integral transform, LOCA is able to explicitly learn correlations in the target output functions, enabling us to approximate nonlinear operators even when the number of output function measurements is very small.
    Type: Application
    Filed: January 3, 2023
    Publication date: July 6, 2023
    Inventors: Paris Georgios Perdikaris, George J. Pappas, Jacob Hugh Seidman, Georgios Kissas
  • Patent number: 10963540
    Abstract: A method for analyzing an object includes modeling the object with a differential equation, such as a linear partial differential equation (PDE), and sampling data associated with the differential equation. The method uses a probability distribution device to obtain the solution to the differential equation. The method eliminates use of discretization of the differential equation.
    Type: Grant
    Filed: June 2, 2017
    Date of Patent: March 30, 2021
    Assignee: Brown University
    Inventors: Maziar Raissi, Paris Perdikaris, George E. Karniadakis
  • Publication number: 20200293594
    Abstract: A method for analyzing an object includes modeling the object with a differential equation, such as a linear partial differential equation (PDE), and sampling data associated with the differential equation. The method uses a probability distribution device to obtain the solution to the differential equation. The method eliminates use of discretization of the differential equation.
    Type: Application
    Filed: June 2, 2017
    Publication date: September 17, 2020
    Inventors: Maziar RAISSI, Paris PERDIKARIS, George E. KARNIADAKIS
  • Patent number: 6171657
    Abstract: Method of improving the tribological and erosive wear resistance of yankee dryer drums including coating the drum with an iron alloy containing from about 20 to about 47 weight per cent chromium, about 2.5 to about 6.5 weight per cent boron, about 1.7 to about 2.7 weight per cent silicon, and less than about 8 weight per cent molybdenum. The coated yankee dryer drum is long wearing based on the hardness of the coating and smooth wearing as the coating has a consistent composition through its depth at the outset and over time.
    Type: Grant
    Filed: December 18, 1995
    Date of Patent: January 9, 2001
    Assignee: Bender Machine, Inc.
    Inventor: Chris Perdikaris
  • Patent number: 5759142
    Abstract: Aluminizing process guide roll are made longer wearing without surface defects by applying a multilayer coating on the roll surface including a first coating layer of MCrAlY metal of a first, lower porosity effective against corrosion, and a second coating layer of refractory oxide of a second higher porosity effective against surface defect failure generated thermal expansion failure of the layer.
    Type: Grant
    Filed: February 12, 1997
    Date of Patent: June 2, 1998
    Assignee: Bender Machine, Inc.
    Inventor: Chris Perdikaris
  • Patent number: 5163047
    Abstract: A multi-user Time Division Multiplex (TDM) system includes a plurality of stations and at least one erasure node located between groups of the stations. When a station reads the destination identification bits of a received time slot and determines that it is the destination for that slot, it sets the status of a slot-read bit, which follows the destination identification bits, to indicate that the slot has been read. When an erasure node detects a set slot-read bit it erases all or part of the associated slot, thereby enabling the reuse of that slot by subsequent stations. An interface apparatus, which enables the TDM system to connect the other TDM systems, filters intra-system communications from inter-system communications using the slot-read bit. When the interface apparatus detects a set slot-read bit it knows that the slot has been read and, therefore, is an intra-system communication which should be blocked or discarded.
    Type: Grant
    Filed: May 31, 1991
    Date of Patent: November 10, 1992
    Assignee: AT&T Bell Laboratories
    Inventors: Achilles Perdikaris, Manoel A. Rodrigues
  • Patent number: 5121388
    Abstract: A multi-user Time Division Multiplex (TDM) system includes a plurality of stations and at least one erasure node located between groups of the stations. When a station reads the destination identification bits of a received time slot and determines that it is the destination for that slot, it sets the status of a slot-read bit, which follows the destination identification bits, to indicate that the slot has been read. When an erasure node detects a set slot-read bit it erases all or part of the associated slot, thereby enabling the reuse of that slot by subsequent stations. An interface apparatus, which enables the TDM system to connect the other TDM systems, filters intra-system communications from inter-system communications using the slot-read bit. When the interface apparatus detects a set slot-read bit it knows that the slot has been read and, therefore, is an intra-system communication which should be blocked or discarded.
    Type: Grant
    Filed: September 15, 1989
    Date of Patent: June 9, 1992
    Assignee: AT&T Bell Laboratories
    Inventors: A. Perdikaris, Manoel A. Rodrigues