Patents by Inventor Alfred Stern

Alfred Stern 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: 20250205612
    Abstract: The present relates to a method for operating a drone (1) navigating within an arena (18) delimited by boundaries (19), the navigation of the drone (1) in the arena (18) being ruled by a navigation program setting the navigation parameters of the drone (1) to ensure the drone (1) follows a calculated trajectory. The setting of the navigation parameters of the drone (1) in the navigation program depends on the object impacting the drone (1). The setting step comprises implementing a virtual impact setup in the navigation program for adjusting the navigation parameters of the drone (1) to an impact between the drone (1) and a virtual object, and implementing a real impact setup in the navigation program for adjusting the navigation parameters of the drone (1) to an impact between the drone (1) and a physical object.
    Type: Application
    Filed: March 28, 2023
    Publication date: June 26, 2025
    Inventors: Isaac Alfred Stern, Stéphane Oliveira Paredes, Anuraag Vijay Kumar Pothula
  • Patent number: 4241189
    Abstract: A wear-resistant flexible sheet material, suitable for use as outer soles on footwear, is produced by pressing reconstituted polyurethane foam sheets in the substantial absence of air at temperatures above 150.degree. C. The sheets should have a density exceeding 15 lb/ft.sup.3 and are further densified by the hot pressing. The sheets are preferably pre-heated to 175.degree.-210.degree. C. and pressed under a pressure of 5 to 30 tons/ft.sup.2 for periods of up to 5 minutes. The sheets may be embossed or smooth surfaced and may contain pigments, plasticizers and other additives.
    Type: Grant
    Filed: February 2, 1978
    Date of Patent: December 23, 1980
    Assignee: General Foam Products Limited
    Inventors: Neville M. Sheldon, Alfred Stern