Inventor · Eugene, OR, US

Joseph Bartel

24Patents
6h-index
36Co-inventors
65Inventor score

Filing activity: Mar 25, 2002 → Aug 21, 2018

Most-cited inventions

PatentTitleAreaCited byStatus
US6656658B2 Magnetite toner processes Physics 39 Expired
US6656657B2 Toner processes Physics 34 Expired
US8637082B2 Methods for preparation of ZnTe nanocrystals Emerging Cross-Sectional Technologies 16 Active
US7560505B2 Wax emulsion for emulsion aggregation toner Physics 11 Active
US6808851B2 Emulsion aggregation toner containing a mixture of waxes incorporating an improved process to prevent wax protrusions and coarse particles Physics 9 Expired
US9181472B2 Magnesium-based coatings for nanocrystals Chemistry; Metallurgy 7 Active
US10084042B2 Nanocrystals with high extinction coefficients and methods of making and using such nanocrystals Emerging Cross-Sectional Technologies 6 Active
US9937560B2 Methods for preparation of nanocrystals using a weak electron transfer agent and mismatched shell precursors Chemistry; Metallurgy 4 Active
US7320851B2 Toner particles and methods of preparing the same Physics 4 Active
US9577037B2 Nanocrystals with high extinction coefficients and methods of making and using such nanocrystals Emerging Cross-Sectional Technologies 3 Active
US10100248B2 Magnesium-based coatings for nanocrystals Chemistry; Metallurgy 3 Active
US7049042B2 Toner processes Physics 3 Expired
US8287761B2 Preparation of stable, bright luminescent nanoparticles having compositionally engineered properties Emerging Cross-Sectional Technologies 2 Active
US7695642B2 Preparation of stable, bright luminescent nanoparticles having compositionally engineered properties Emerging Cross-Sectional Technologies 2 Expired
US8679543B2 Stable indium-containing semiconductor nanocrystals Electricity 2 Active
US10224398B2 Preparation of nanocrystals with mixtures of organic ligands Emerging Cross-Sectional Technologies 1 Active
US7041425B2 Toner processes Physics 1 Expired
US9012204B2 Activation and monitoring of cellular transmembrane potentials Physics 0 Active
US9263638B2 Preparation of stable, bright luminescent nanoparticles having compositionally engineered properties Emerging Cross-Sectional Technologies 0 Active
US8747517B2 Methods for isolating and purifying nanoparticles from a complex medium Chemistry; Metallurgy 0 Active
US9291566B2 Stable indium-containing semiconductor nanocrystals Electricity 0 Active
US11011603B2 Preparation of nanocrystals with mixtures of organic ligands Emerging Cross-Sectional Technologies 0 Active
US8603362B2 Preparation of stable, bright luminescent nanoparticles having compositionally engineered properties Emerging Cross-Sectional Technologies 0 Active
US10686034B2 Nanocrystals with high extinction coefficients and methods of making and using such nanocrystals Emerging Cross-Sectional Technologies 0 Active

Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.