Patents by Inventor AMIRUDDIN HASSAN

AMIRUDDIN HASSAN 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).

  • Form of copper sulfide
    Patent number: 11613708
    Abstract: Copper sulfide of the formula CuxSy, wherein x and y are integer or non-integer values, wherein (i) the copper sulfide has a sulfur 2p XPS spectrum with peaks at 162.3 eV (±1 ev), 163.8 eV (±1 ev) and 68.5 eV (±1 ev), characterised in that the peak at 168.5 eV has a lower value of counts per second (CPS) than both the peak at 162.3 eV and the peak at 163.8 eV; and (ii) the copper sulfide has a copper 2p XPS spectrum with peaks at 932.0 eV (±2 ev) and 933.6 eV (±3 eV) and characterised in that the XPS spectrum does not comprise identifiable satellite peaks at 939.8 eV and 943.1 eV (±3 eV).
    Type: Grant
    Filed: August 1, 2018
    Date of Patent: March 28, 2023
    Assignee: PETROLIAM NASIONAL BERHAD (PETRONAS)
    Inventors: Kenneth Seddon, Geetha Srinivasan, Mohammad Syamzari Rafeen, Kuah Yong Cheun, Amiruddin Hassan, Adi Aizat Razali, Sharizal Bin Mohd Azam Shah Wong
  • Process for the production of copper sulfide
    Patent number: 11065577
    Abstract: A process for preparing a copper sulfide of the formula CuxSy, wherein the process comprises the following steps: (i) reacting an aqueous solution of a copper salt with a molar excess of a sulfiding agent so as to precipitate copper sulfide from the solution; (ii) isolating the copper sulfide precipitate from the reaction mixture; and (iii) drying the copper sulfide precipitate at a temperature of less than 100° C., wherein x and y are integer or non-integer values.
    Type: Grant
    Filed: August 1, 2018
    Date of Patent: July 20, 2021
    Assignee: Petroliam Nasional Berhad (Petronas)
    Inventors: Kenneth Seddon, Geetha Srinivasan, Mohammad Syamzari Rafeen, Kuah Yong Cheun, Amiruddin Hassan, Adi Aizat Razali, Sharizal Bin Mohd Azam Shah Wong
  • PROCESS FOR THE PRODUCTION OF COPPER SULFIDE
    Publication number: 20200238214
    Abstract: A process for preparing a copper sulfide of the formula CuxSy, wherein the process comprises the following steps: (i) reacting an aqueous solution of a copper salt with a molar excess of a sulfiding agent so as to precipitate copper sulfide from the solution; (ii) isolating the copper sulfide precipitate from the reaction mixture; and (iii) drying the copper sulfide precipitate at a temperature of less than 100° C., wherein x and y are integer or non-integer values.
    Type: Application
    Filed: August 1, 2018
    Publication date: July 30, 2020
    Inventors: KENNETH SEDDON, GEETHA SRINIVASAN, MOHAMMAD SYAMZARI RAFEEN, KUAH YONG CHEUN, AMIRUDDIN HASSAN, ADI AIZAT RAZALI, SHARIZAL M. AZAM SHAH WONG
  • NEW FORM OF COPPER SULFIDE
    Publication number: 20200239786
    Abstract: Copper sulfide of the formula CuxSy, wherein x and y are integer or non-integer values, wherein (i) the copper sulfide has a sulfur 2p XPS spectrum with peaks at 162.3 eV (±1 ev), 163.8 eV (±1 ev) and 68.5 eV (±1 ev), characterised in that the peak at 168.5 eV has a lower value of counts per second (CPS) than both the peak at 162.3 eV and the peak at 163.8 eV; and (ii) the copper sulfide has a copper 2p XPS spectrum with peaks at 932.0 eV (±2ev) and 933.6 eV (±3eV) and characterised in that the XPS spectrum does not comprise identifiable satellite peaks at 939.8 eV and 943.1 eV (±3 eV).
    Type: Application
    Filed: August 1, 2018
    Publication date: July 30, 2020
    Inventors: KENNETH SEDDON, GEETHA SRINIVASAN, MOHAMMAD SYAMZARI RAFEEN, KUAH YONG CHEUN, AMIRUDDIN HASSAN, ADI AIZAT RAZALI, SHARIZAL M. AZAM SHAH WONG