Patents by Inventor Andre Weijh

Andre Weijh 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: 20250334387
    Abstract: The present invention pertains to the field of the arms industry and metallurgy, and also to the fields of materials engineering and chemical engineering. More specifically, the present invention refers to a novel ammunition cartridge comprising reinforced polymer and the manufacturing process thereof. The ammunition cartridge serves for receiving the gunpowder so that explosions can occur inside the weapon barrel. The technology proposed reduces the quantity of components to be pre-manufactured and assembly processes on the product, producing a full cartridge, directly upon injecting the thermoplastic, and can also use bi-component injection. With this, the portion of the collar ring can be made entirely of fiber-reinforced polymer material, which reduces the weight of the item and is beneficial for the useful life of the weapon in the bolt region.
    Type: Application
    Filed: July 7, 2025
    Publication date: October 30, 2025
    Inventors: Andre Giacomini Dias Carmona, Andre Viegas Wentz, Andre Weijh, Claudio Wietky Junior, Frederico Eggers, Glaucio De Almeida Carvalho, Marcelo Moreno, Vinicius Cabreira
  • Patent number: 12379195
    Abstract: The present invention pertains to the field of the arms industry and metallurgy, and also to the fields of materials engineering and chemical engineering. More specifically, the present invention refers to a novel ammunition cartridge comprising reinforced polymer and the manufacturing process thereof. The ammunition cartridge serves for receiving the gunpowder so that explosion can occur inside the weapon barrel. The technology proposed reduces the quantity of components to be pre-manufactured and assembly processes on the product, producing a full cartridge, directly upon injecting the thermoplastic, and can also use bi-component injection. With this, the portion of the collar ring can be made entirely of fiber-reinforced polymer material, which reduces the weight of the item and is beneficial for the useful life of the weapon in the bolt region.
    Type: Grant
    Filed: September 8, 2022
    Date of Patent: August 5, 2025
    Assignees: COMPANHIA BRASILEIRA DE CARTUCHOS, SERVIO NACIONAL DE APRENDIZAGEM INDUSTRIAL—DEPARTAMENTO REGIONAL DO RIO GRANDE DO SUL—SENAI/RS
    Inventors: Andre Giacomini Dias Carmona, Andre Viegas Wentz, Andre Weijh, Claudio Wietky Junior, Frederico Eggers, Glaucio De Almeida Carvalho, Marcelo Moreno, Vinicius Cabreira
  • Publication number: 20240142207
    Abstract: The present invention pertains to the field of the arms industry and metallurgy, and also to the fields of materials engineering and chemical engineering. More specifically, the present invention refers to a novel ammunition cartridge comprising reinforced polymer and the manufacturing process thereof. The ammunition cartridge serves for receiving the gunpowder so that explosion can occur inside the weapon barrel. The technology proposed reduces the quantity of components to be pre-manufactured and assembly processes on the product, producing a full cartridge, directly upon injecting the thermoplastic, and can also use bi-component injection. With this, the portion of the collar ring can be made entirely of fiber-reinforced polymer material, which reduces the weight of the item and is beneficial for the useful life of the weapon in the bolt region.
    Type: Application
    Filed: September 8, 2022
    Publication date: May 2, 2024
    Inventors: Andre Giacomini Dias Carmona, Andre Viegas Wentz, Andre Weijh, Claudio Wietky Junior, Frederico Eggers, Claucio De Almeida Carvalho, Marcelo Moreno, Vinicius Cabreira