Inventor · Farmington, NM, US

David A. Simpson

32Patents
4h-index
28Co-inventors
63Inventor score

Filing activity: Jun 17, 1976 → Aug 16, 2021

Most-cited inventions

PatentTitleAreaCited byStatus
US4271259A Photosensitive compositions containing a photooxidizable component Physics 14 Expired
US7179458B2 Lactobacilli expressing biologically active polypeptides and uses thereof Chemistry; Metallurgy 13 Expired
US4272610A Photopolymer process using photo oxidizable component Physics 8 Expired
US4047963A Photopolymer compositions Physics 6 Expired
US8302695B2 Downhole systems and methods for deliquifaction of a wellbore Fixed Constructions 4 Active
US7456011B2 Modified cyanovirin-n polypeptide Chemistry; Metallurgy 3 Expired
US7312076B2 Lactobacilli expressing biologically active polypeptides and uses thereof Chemistry; Metallurgy 3 Active
US8940884B2 Polyunsaturated fatty acid synthase nucleic acid molecules and polypeptides, compositions, and methods of making and uses thereof Emerging Cross-Sectional Technologies 3 Active
US8349600B2 Polypeptides having nucleic acid binding activity Chemistry; Metallurgy 2 Active
US8637651B2 Protein production in microorganisms of the phylum labyrinthulomycota Chemistry; Metallurgy 2 Active
US8458598B1 Customized advertising for online slideshow Electricity 2 Active
US9267130B2 Polypeptides having nucleic acid binding activity and compositions and methods for nucleic acid amplification Chemistry; Metallurgy 2 Active
US10689959B2 Fluid injection system Physics 1 Active
US7833791B2 Lactobacilli expressing biologically active polypeptides and uses thereof Chemistry; Metallurgy 1 Active
US9518102B2 Polypeptide for improving protein production in microorganisms of the phylum Labyrinthulomycota Chemistry; Metallurgy 0 Active
US10538772B2 Polyunsaturated fatty acid synthase nucleic acid molecules and polypeptides, compositions, and methods of making and uses thereof Emerging Cross-Sectional Technologies 0 Active
US11879875B2 Sample manager, system and method Physics 0 Active
US8597402B2 Device for capturing gas from a produced water stream Fixed Constructions 0 Active
US8439999B2 Device for capturing gas from a produced water stream Fixed Constructions 0 Active
US11162923B2 Twist lock compliant needle for detection of contact Physics 0 Active
US11835496B2 Sample metering and injection for liquid chromatography Physics 0 Active
US10392988B2 Pressure relief system for diesel exhaust fluid freeze damage mitigation Emerging Cross-Sectional Technologies 0 Active
US12121891B2 Dual delivery needle wash system Physics 0 Active
US12203075B2 Polyunsaturated fatty acid synthase nucleic acid molecules and polypeptides, compositions, and methods of making and uses thereof Emerging Cross-Sectional Technologies 0 Active
US11555804B2 Liquid chromatography thermal system with thermal status detection Physics 0 Active

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