1. G.S. Lucas L. Quintero Magnetic polymers for improving hydrocarbon recovery or drilling performance, US Patent Application 20 150 240 609, assigned to Baker Hughes Incorporated, Houston (TX), August 27, 2015
2. C.W. Roddy Magnetically controlled delivery of subterranean fluid additives for use in subterranean applications, US Patent 8 424 598, assigned to Halliburton Energy Services, Inc. (Houston, TX), April 23, 2013
3. R.O. Sanchez S. Gunewardena J.V. Masi High frequency transformers and high Q factor inductors formed using epoxy-based magnetic polymer materials, US Patent 7 300 615, assigned to Sandia Corporation (Albuquerque, NM), November 27, 2007
4. R.F. Ziolo Production of low density coated magnetic polymer carrier particulate materials, US Patent 4 245 026, assigned to Xerox Corporation (Stamford, CT), January 13, 1981
5. C.F. Carlson Electrophotography, US Patent 2 297 691, assigned to 2297691, October 6, 1942