Patents by Inventor Manyalibo J. Matthews

Manyalibo J. Matthews 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).

  • Additive manufacturing powder spreading technology to mitigate surface defects
    Patent number: 11141912
    Abstract: A laser powder bed fusion additive manufacturing system having a powder dispenser that provides powder layers on a build platform; a laser fusion system that fuses the powder layers, wherein spatter particles are produce on the powder layers; and a powder bed sweeping system that sweeps the spatter particles from the powder layers. The powder bed sweeping system includes a brush that has bristles that contact the spatter particles and sweeps the spatter particles from the powder layers.
    Type: Grant
    Filed: October 10, 2019
    Date of Patent: October 12, 2021
    Assignee: Lawrence Livermore National Laboratory, LLC
    Inventors: Saad A. Khairallah, Gabe Guss, Eric B. Herbold, Wayne E. King, Manyalibo J. Matthews, Alexander M. Rubenchik, Otis R. Walton
  • ADDITIVE MANUFACTURING POWDER SPREADING TECHNOLOGY TO MITIGATE SURFACE DEFECTS
    Publication number: 20210107214
    Abstract: A laser powder bed fusion additive manufacturing system having a powder dispenser that provides powder layers on a build platform; a laser fusion system that fuses the powder layers, wherein spatter particles are produce on the powder layers; and a powder bed sweeping system that sweeps the spatter particles from the powder layers. The powder bed sweeping system includes a brush that has bristles that contact the spatter particles and sweeps the spatter particles from the powder layers.
    Type: Application
    Filed: October 10, 2019
    Publication date: April 15, 2021
    Inventors: Saad A. Khairallah, Gabe Guss, Eric B. Herbold, Wayne E. King, Manyalibo J. Matthews, Alexander M. Rubenchik, Otis R. Walton
  • System and method for laser-based, non-evaporative repair of damage sites in the surfaces of fused silica optics
    Patent number: 10059624
    Abstract: The present disclosure relates to a system for repairing a damage site on a surface of an optical material. The system may have an Infrared (IR) laser which generates a laser beam having a predetermined wavelength, with a predetermined beam power, and such that the laser beam is focused to a predetermined full width (“F/W”) 1/e2 diameter spot on the damage site. The IR laser may be controlled to maintain the focused IR laser beam on the damage site for a predetermined exposure period corresponding to a predetermined acceptable level of downstream intensification. The laser beam may heat the damage site to a predetermined peak temperature which causes melting and reflowing of material at the damage site to create a mitigated site.
    Type: Grant
    Filed: August 16, 2016
    Date of Patent: August 28, 2018
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: John J. Adams, Masoud Bolourchi, Jeffrey D. Bude, Gabriel M. Guss, Jeffery A. Jarboe, Manyalibo J. Matthews, Michael C. Nostrand, Paul J. Wegner
  • Laser-induced gas plasma machining
    Patent number: 9790090
    Abstract: Techniques for removing material from a substrate are provided. A laser beam is focused at a distance from the surface to be treated. A gas is provided at the focus point. The gas is dissociated using the laser energy to generate gas plasma. The substrate is then brought in contact with the gas plasma to enable material removal.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: October 17, 2017
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: Selim Elhadj, Isaac Louis Bass, Gabriel Mark Guss, Manyalibo J. Matthews
  • SYSTEM AND METHOD FOR LASER-BASED, NON-EVAPORATIVE REPAIR OF DAMAGE SITES IN THE SURFACES OF FUSED SILICA OPTICS
    Publication number: 20160368819
    Abstract: The present disclosure relates to a system for repairing a damage site on a surface of an optical material. The system may have an Infrared (IR) laser which generates a laser beam having a predetermined wavelength, with a predetermined beam power, and such that the laser beam is focused to a predetermined full width (“F/W”) 1/e2 diameter spot on the damage site. The IR laser may be controlled to maintain the focused IR laser beam on the damage site for a predetermined exposure period corresponding to a predetermined acceptable level of downstream intensification. The laser beam may heat the damage site to a predetermined peak temperature which causes melting and reflowing of material at the damage site to create a mitigated site.
    Type: Application
    Filed: August 16, 2016
    Publication date: December 22, 2016
    Inventors: John J. ADAMS, Masoud BOLOURCHI, Jeffrey D. BUDE, Gabriel M. GUSS, Jeffery A. JARBOE, Manyalibo J. MATTHEWS, Michael C. NOSTRAND, Paul J. WEGNER
  • System and method for laser-based, non-evaporative repair of damage sites in the surfaces of fused silica optics
    Patent number: 9434645
    Abstract: A method for repairing a damage site on a surface of an optical material is disclosed. The method may involve focusing an Infrared (IR) laser beam having a predetermined wavelength, with a predetermined beam power, to a predetermined full width (“F/W”) 1/e2 diameter spot on the damage site. The focused IR laser beam is maintained on the damage site for a predetermined exposure period corresponding to a predetermined acceptable level of downstream intensification. The focused IR laser beam heats the damage site to a predetermined peak temperature, which melts and reflows material at the damage site of the optical material to create a mitigated site.
    Type: Grant
    Filed: December 6, 2012
    Date of Patent: September 6, 2016
    Assignee: Lawrence Livermore National Security, LLC
    Inventors: John J. Adams, Masoud Bolourchi, Jeffrey D. Bude, Gabriel M. Guss, Jeffery A. Jarboe, Manyalibo J. Matthews, Michael C. Nostrand, Paul J. Wegner