Patents by Inventor Sam Lukubira

Sam Lukubira 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).

  • MULTI-LAYER MATERIAL INCORPORATING SUSTAINABLE RESINS AND HAVING IMPROVED MECHANICAL PROPERTIES
    Publication number: 20250019529
    Abstract: A multi-layer device, such as a tube, a conduit, a tubular member, a housing, an enclosure, a fabric, a material, or any other mechanical form factor, in which at least one layer of the multi-layer device contains a mixture of a virgin high density polyethylene (HDPE) and a recycled HDPE.
    Type: Application
    Filed: March 22, 2024
    Publication date: January 16, 2025
    Applicant: Dura-Line LLC
    Inventors: Sungki Cho, Arturo Valencia, Sam Lukubira, Jonghan Choi
  • STABILIZATION LAYERS IN FLEXIBLE PROFILE/CONDUIT PROCESSING AND APPLICATIONS
    Publication number: 20240217156
    Abstract: A conduit including a first concentric layer and a second concentric layer that are coextruded, the first concentric layer having a higher melt viscosity than the second concentric layer, and the first concentric layer being of a thickness of at least 3% of a combined thickness of the first and second concentric layers, is provided. Conduits further including third and fourth concentric layers and conduits further including at least one microduct within a lumen defined by the first concentric layer are further provided.
    Type: Application
    Filed: December 28, 2022
    Publication date: July 4, 2024
    Inventors: Sam Lukubira, Caleb Michael Spradling, Gordon Mikel Roark, Arturo Valencia
  • Ultra-low friction materials for lubricating surfaces, devices therewith, and methods of manufacture and use thereof
    Patent number: 11753601
    Abstract: A polymeric material mixture comprising a fluorine-containing polymer, a siloxane polymer, and at least two polymer processing additives (PPA), wherein the at least two polymer processing additives have different chemistries. For example, there can be a flexible coextruded pipe for providing a protective housing for cables, fluids, sludge or solids, the pipe comprising a pair of telescopically related inner and outer layers, where said inner layer is lubricated with the polymeric material mixture.
    Type: Grant
    Filed: February 14, 2022
    Date of Patent: September 12, 2023
    Assignee: Dura-Line LLC
    Inventors: H. Thomas Chung, Fei Fan, Sung Ki Cho, Sam Lukubira, Caleb Michael Spradling, Arturo Valencia
  • Ultra-low friction materials for lubricating surfaces, devices therewith, and methods of manufacture and use thereof
    Patent number: 11702612
    Abstract: A polymeric material mixture comprising a fluorine-containing polymer, a siloxane polymer, and at least two polymer processing additives (PPA), wherein the at least two polymer processing additives have different chemistries. For example, there can be a flexible coextruded pipe for providing a protective housing for cables, fluids, sludge or solids, the pipe comprising a pair of telescopically related inner and outer layers, where said inner layer is lubricated with the polymeric material mixture.
    Type: Grant
    Filed: April 5, 2021
    Date of Patent: July 18, 2023
    Assignee: Dura-Line LLC
    Inventors: H. Thomas Chung, Fei Fan, Sung Ki Cho, Sam Lukubira, Caleb Michael Spradling, Arturo Valencia
  • ULTRA-LOW FRICTION MATERIALS FOR LUBRICATING SURFACES, DEVICES THEREWITH, AND METHODS OF MANUFACTURE AND USE THEREOF
    Publication number: 20220167757
    Abstract: A polymeric material mixture comprising a fluorine-containing polymer, a siloxane polymer, and at least two polymer processing additives (PPA), wherein the at least two polymer processing additives have different chemistries. For example, there can be a flexible coextruded pipe for providing a protective housing for cables, fluids, sludge or solids, the pipe comprising a pair of telescopically related inner and outer layers, where said inner layer is lubricated with the polymeric material mixture.
    Type: Application
    Filed: February 14, 2022
    Publication date: June 2, 2022
    Inventors: H. Thomas Chung, Fei Fan, Sung Ki Cho, Sam Lukubira, Caleb Michael Spradling, Arturo Valencia
  • ULTRA-LOW FRICTION MATERIALS FOR LUBRICATING SURFACES, DEVICES THEREWITH, AND METHODS OF MANUFACTURE AND USE THEREOF
    Publication number: 20210309931
    Abstract: A polymeric material mixture comprising a fluorine-containing polymer, a siloxane polymer, and at least two polymer processing additives (PPA), wherein the at least two polymer processing additives have different chemistries. For example, there can be a flexible coextruded pipe for providing a protective housing for cables, fluids, sludge or solids, the pipe comprising a pair of telescopically related inner and outer layers, where said inner layer is lubricated with the polymeric material mixture.
    Type: Application
    Filed: April 5, 2021
    Publication date: October 7, 2021
    Inventors: H. Thomas Chung, Fei Fan, Sung Ki Cho, Sam Lukubira, Caleb Michael Spradling, Arturo Valencia