Inventor
DRUMMOND JAMES PAUL
US15 patents
Patents
15 patentsUS9553582B1Jan 24, 2017
Physical unclonable functions having magnetic and non-magnetic particles
LEXMARK INT INC21 citations93
US6841024B2Jan 11, 2005
Compensation plates and compliant members for laser welding a non-uniformly thick work piece including inkjet printheads with non-uniformly thick printhead lids
LEXMARK INT INC17 citations92
US9929864B2Mar 27, 2018
Rotating magnetic measurements of physical unclonable functions
LEXMARK INT INC7 citations83
US9917699B2Mar 13, 2018
Physical unclonable function imaged through two faces
LEXMARK INT INC9 citations83
US9608828B1Mar 28, 2017
Elongated physical unclonable function
LEXMARK INT INC9 citations83
US6974207B2Dec 13, 2005
Laser welding methods and structures and control therefor including welded inkjet printheads
LEXMARK INT INC13 citations82
US10410779B2Sep 10, 2019
Methods of making physical unclonable functions having magnetic and non-magnetic particles
LEXMARK INT INC2 citations72
US10921393B2Feb 16, 2021
Magnetometer chip sensor array for reading a magnetic PUF, including a magnetic PUF film or tape, and systems incorporating the reader
LEXMARK INT INC4 citations70
US11381406B2Jul 5, 2022
Injection-molded physical unclonable function
LEXMARK INT INC0 citations62
US11356287B2Jun 7, 2022
Injection-molded physical unclonable function
LEXMARK INT INC1 citations62
US7274856B2Sep 25, 2007
Waveguide apparatus and method for laser welding
LEXMARK INT INC2 citations62
US7354137B2Apr 8, 2008
Laser welding methods and structures and control therefor including welded inkjet printheads
LEXMARK INT INC2 citations61
US10566296B2Feb 18, 2020
Physical unclonable functions in bank cards or identification cards for security
LEXMARK INT INC1 citations59
US6579409B2Jun 17, 2003
Segmented compliant platen for film sealing on ink jet cartridges
LEXMARK INT INC6 citations59
US7425795B2Sep 16, 2008
Customizable electroluminescent displays
LEXMARK INT INC3 citations57