Patents by Inventor Lodewijk Keizer

Lodewijk Keizer 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).

  • Apparatus and method for soil testing for jack-up rigs
    Patent number: 8146418
    Abstract: An apparatus for soil testing for a jack-up rig, the apparatus comprising a soil testing device integrated with a leg of the jack-up rig, the leg of the jack-up rig having a footing, an opening in the footing for allowing passage of an active portion of the soil testing device therethrough to obtain soil data from a seabed beneath the footing, and a retrieval assembly for retrieving the soil testing device.
    Type: Grant
    Filed: September 2, 2008
    Date of Patent: April 3, 2012
    Assignees: Keppel Offshore & Marie Technology Centre Pte Ltd, A.P. van den Berg Holding bv
    Inventors: Kok Seng Foo, Chin Kau Quah, Okky Ahmad Purwana, Lodewijk Keizer, Mark Felton Randolph, Mark Jason Cassidy
  • APPARATUS AND METHOD FOR SOIL TESTING FOR JACK-UP RIGS
    Publication number: 20100050764
    Abstract: An apparatus for soil testing for a jack-up rig, the apparatus comprising a soil testing device integrated with a leg of the jack-up rig, the leg of the jack-up rig having a footing, an opening in the footing for allowing passage of an active portion of the soil testing device therethrough to obtain soil data from a seabed beneath the footing, and a retrieval assembly for retrieving the soil testing device.
    Type: Application
    Filed: September 2, 2008
    Publication date: March 4, 2010
    Applicants: KEPPEL OFFSHORE & MARINE TECHNOLOGY CENTRE PTE LTD, A.P. VAN DEN BERG HOLDING BV
    Inventors: Kok Seng FOO, Chin Kau QUAH, Okky Ahmad PURWANA, Lodewijk KEIZER, Mark Felton RANDOLPH, Mark Jason CASSIDY