Inventor · Boulder, CO, US

Charles Johnson

29Patents
10h-index
42Co-inventors
75Inventor score

Filing activity: Jan 4, 1985 → Feb 25, 2022

Most-cited inventions

PatentTitleAreaCited byStatus
US7879046B2 Suturing apparatus and method Human Necessities 97 Active
US7644772B2 Ball seat having segmented arcuate ball support member Fixed Constructions 56 Active
US10837021B1 Curing for recursive nucleic acid-guided cell editing Chemistry; Metallurgy 50 Active
US7628210B2 Ball seat having ball support member Fixed Constructions 43 Active
US4618769A Liquid chromatography/Fourier transform IR spectrometry interface flow cell Physics 27 Expired
US9016388B2 Wiper plug elements and methods of stimulating a wellbore environment Fixed Constructions 20 Active
US8839873B2 Isolation of zones for fracturing using removable plugs Fixed Constructions 19 Active
US9359865B2 Pressure actuated ported sub for subterranean cement completions Fixed Constructions 14 Active
US8540732B2 Suturing apparatus and method Human Necessities 13 Active
US8121883B2 Method and system for automatically prioritizing opportunity based customer requirements Physics 11 Active
USRE46137E1 Pressure actuated ported sub for subterranean cement completions General 8 Active
US9068429B2 Dissolvable tool and method of dissolving same Fixed Constructions 8 Active
US11254942B2 Curing for recursive nucleic acid-guided cell editing Chemistry; Metallurgy 8 Active
US9222333B2 Monitoring system for borehole operations Fixed Constructions 5 Active
US11053507B2 Curing for recursive nucleic acid-guided cell editing Chemistry; Metallurgy 3 Active
USD391461S Support arm brace with grip enhancer for use with a lawn and hedge trimming apparatus General 3 Expired
US9441455B2 Cement masking system and method thereof Fixed Constructions 3 Active
US10752874B2 Instruments, modules, and methods for improved detection of edited sequences in live cells Chemistry; Metallurgy 2 Active
USRE46793E1 Wiper plug elements and methods of stimulating a wellbore environment General 1 Active
US11891609B2 Methods for increasing observed editing in bacteria Chemistry; Metallurgy 0 Active
US11319542B2 Methods for increasing observed editing in bacteria Chemistry; Metallurgy 0 Active
US10006853B2 Vial and cap for turbidity standard Physics 0 Active
US9255461B2 Removable fracturing plug of particulate material housed in a sheath set by expansion of a passage through the sheath Fixed Constructions 0 Active
US10190390B2 Pressure actuated ported sub for subterranean cement completions Fixed Constructions 0 Active
US11634719B2 Curing for recursive nucleic acid-guided cell editing Chemistry; Metallurgy 0 Active

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