Patents by Inventor Moyses Leite De Lima

Moyses Leite De Lima 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).

  • Piston rings in cast tool steels and process for the manufacture thereof
    Patent number: 10309536
    Abstract: A piston ring in cast tool steels including a ring of a tempered material having a chemical composition including a percent weight concentration of C from 0.80 to 1.40, Cr from 2.50 to 4.20, Mn from 0.10 to 1.00, Mo from 1.00 to 2.00, Nb from 2.50 to 4.50, P of no more than 0.05, S of no more than 0.05, Si from 0.10 to 1.00, Ti from 0.10 to 0.30, V from 1.00 to 3.00, W from 1.00 to 3.00, and a remaining concentration balance of Fe. The tempered material may have a microstructure including a matrix of tempered martensite with precipitation of at least one of secondary M2C carbides and MC carbides, M being at least one of V, Mo, Cr, and W. The microstructure may include NbC eutectic carbides having a cubic morphology. The tempered material may have a hardness from approximately 400 HV to 800 HV.
    Type: Grant
    Filed: October 24, 2016
    Date of Patent: June 4, 2019
    Assignees: Instituto De Pesquisas Technologicas Do Estado De Sao Paulo S/A, Mahle Metal Leve S/A, Mahle International GmbH
    Inventors: Mario Boccalini, Jr., Eduardo Albertin, Moyses Leite De Lima, Gisela Marques Araujo
  • PISTON RINGS IN CAST TOOL STEELS AND PROCESS FOR THE MANUFACTURE THEREOF
    Publication number: 20180313447
    Abstract: A piston ring in cast tool steels including a ring of a tempered material having a chemical composition including a percent weight concentration of C from 0.80 to 1.40, Cr from 2.50 to 4.20, Mn from 0.10 to 1.00, Mo from 1.00 to 2.00, Nb from 2.50 to 4.50, P of no more than 0.05, S of no more than 0.05, Si from 0.10 to 1.00, Ti from 0.10 to 0.30, V from 1.00 to 3.00, W from 1.00 to 3.00, and a remaining concentration balance of Fe. The tempered material may have a microstructure including a matrix of tempered martensite with precipitation of at least one of secondary M2C carbides and MC carbides, M being at least one of V, Mo, Cr, and W. The microstructure may include NbC eutectic carbides having a cubic morphology. The tempered material may have a hardness from approximately 400 HV to 800 HV.
    Type: Application
    Filed: October 24, 2016
    Publication date: November 1, 2018
    Inventors: Mario Boccalini, Jr., Eduardo Albertin, Moyses Leite De Lima, Gisela Marques Araujo