Patents by Inventor Marcelino A. Martins

Marcelino A. Martins 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).

  • Conductive urethane roller
    Publication number: 20020077402
    Abstract: An electrically conductive or semi-conductive polymeric material including a metal salt dissolved in a polymer. The metal salt is complexed with the polymer, which is what provides the material with its conductive properties. The materials have a resistivity of between 105 and 1012 ohms-cm.
    Type: Application
    Filed: December 11, 2001
    Publication date: June 20, 2002
    Applicant: Mearthane Products Corporation, a Rhode Island corporation
    Inventors: Albert C. Chiang, John A. Roderick, Marcelino A. Martins, George B. Martins
  • Electrically conductive and semi-conductive polymers
    Patent number: 6361484
    Abstract: A roller includes a metal core, a cylinder including polyurethane, and a conductive adhesive between the metal core and the cylinder. The polyurethane includes a solid solution of a transition metal halide salt and includes less than 5% of salt by weight. The transition metal halide salt provides the polyurethane with a uniform conductivity and a uniform resistivity of between 1012 ohm-cm and 105 ohms-cms.
    Type: Grant
    Filed: April 21, 2000
    Date of Patent: March 26, 2002
    Assignee: Mearthane Products Corporation
    Inventors: Wen-Pin Chen, Albert C. Chiang, John A. Roderick, Marcelino A. Martins, George B. Martins
  • Electrically conductive and semi-conductive polymers
    Patent number: 6063499
    Abstract: An electrically conductive or semi-conductive polymeric material including a metal salt dissolved in a polymer. The metal salt is completed with the polymer, which is what provides the material with its conductive properties. The materials have a resistivity of between 10.sup.5 and 10.sup.12 ohms-cm.
    Type: Grant
    Filed: July 24, 1997
    Date of Patent: May 16, 2000
    Assignee: Mearthane Products Corp.
    Inventors: Albert C. Chiang, John A. Roderick, George B. Martins, Marcelino A. Martins, Wen-Pin Chen