Patents by Inventor Tiaw Joo KWEE

Tiaw Joo KWEE 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).

  • Sub assembly
    Patent number: 10392874
    Abstract: A sub assembly for coupling to a drill string, the assembly comprising; a mandrel; a sleeve arranged to be co-axially positioned about said mandrel; a first stop arranged to prevent axial movement of the sleeve along the mandrel in a first direction; a second stop arranged to prevent axial movement of the sleeve in a second direction; wherein said second stop is releasably engageable from the mandrel.
    Type: Grant
    Filed: March 28, 2016
    Date of Patent: August 27, 2019
    Assignee: DRILLTECH SERVICES (ASIA) PTE LTD
    Inventors: Guoxin Chen, Peng Pan, Tiaw Joo Kwee, Mark Kim Chong Teow
  • AN IMPROVED SUB ASSEMBLY
    Publication number: 20180291695
    Abstract: A sub assembly for coupling to a drill string, the assembly comprising; a mandrel; a sleeve arranged to be co-axially positioned about said mandrel; a first stop arranged to prevent axial movement of the sleeve along the mandrel in a first direction; a second stop arranged to prevent axial movement of the sleeve in a second direction; wherein said second stop is releasably engageable from the mandrel.
    Type: Application
    Filed: March 28, 2016
    Publication date: October 11, 2018
    Applicant: Drilltech Services (Asia) Pte Ltd
    Inventors: Guoxin CHEN, Peng PAN, Tiaw Joo KWEE, Mark Kim Chong TEOW