Inventor · disambiguated record
Phei Lok
Also filed as: LOK PHEI
3 granted patents·5 pending applications·6 citations·filing 2011–2016
56Inventor score
Top patents by PatentIndex Score
8 records- 0170US10328737B2High refractive index coatings and their use in the protection of surface relief structuresLOK PHEI·Filed 2011·Granted Jun 25, 2019·5 cites·11 claims
- 0254US10185065B2Optically variable deviceLOK PHEI·Filed 2011·Granted Jan 22, 2019·1 cites·20 claims
- 0349US2015360500A1Security Device with Covert ImagesINNOVIA SECURITY PTY LTD·Filed 2014·Application pending·0 cites
- 0447US9904249B2Optical security device having a high refractive index layer between adjacent diffraction elements which have upper portions uncovered by the high refractive index layerINNOVIA SECURITY PTY LTD·Filed 2013·Granted Feb 27, 2018·0 cites·13 claims
- 0539US2014319819A1Optical security device with nanoparticle inkINNOVIA SECURITY PTY LTD·Filed 2012·Application pending·0 cites
- 0638US2014042738A1Security elementPOWER GARY FAIRLESS·Filed 2012·Application pending·0 cites
- 0737US2018043725A1Optical device including zero-order imageryCCL SECURE PTY LTD·Filed 2016·Application pending·0 cites
- 0837US2019143735A1Hidden image security device and methodCCL SECURE PTY LTD·Filed 2016·Application pending·0 cites
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