Inventor · Weatherford, TX, US

Brian C. Witkowski

34Patents
18h-index
12Co-inventors
74Inventor score

Filing activity: Jul 1, 2008 → Aug 28, 2023

Most-cited inventions

PatentTitleAreaCited byStatus
US8261771B2 Flowline flapper valve Emerging Cross-Sectional Technologies 53 Active
US10526862B2 Hydraulic fracturing system, apparatus, and method Mechanical Engineering; Lighting; Heating 50 Active
US9103448B2 Plug valve having preloaded seal segments Emerging Cross-Sectional Technologies 46 Active
US8978695B2 Flowline flapper valve Emerging Cross-Sectional Technologies 40 Active
US9273543B2 Automated relief valve control system and method Mechanical Engineering; Lighting; Heating 40 Active
US9322243B2 Automated relief valve control system and method Emerging Cross-Sectional Technologies 38 Active
USD703294S1 Seal side segment General 31 Active
US9638337B2 Plug valve having preloaded seal segments Emerging Cross-Sectional Technologies 29 Active
US9857807B2 Automated relief valve control system and method Mechanical Engineering; Lighting; Heating 29 Active
US10197172B2 Clapper valve Mechanical Engineering; Lighting; Heating 26 Active
US10557576B2 Full-root-radius-threaded wing nut having increased wall thickness Mechanical Engineering; Lighting; Heating 26 Active
US10753490B2 Clapper valve Mechanical Engineering; Lighting; Heating 26 Active
US10808488B2 Hydraulic fracturing system, apparatus, and method Mechanical Engineering; Lighting; Heating 26 Active
US11149514B2 Hydraulic fracturing system, apparatus, and method Mechanical Engineering; Lighting; Heating 24 Active
USD651592S1 RFID holder General 23 Expired
US8465001B2 Plug valve indicator Emerging Cross-Sectional Technologies 22 Active
USD707332S1 Seal assembly General 21 Active
USD734434S1 Seal assembly General 19 Active
US8998168B2 Plug valve indicator Emerging Cross-Sectional Technologies 16 Active
USD713825S1 Electronic device holder General 13 Active
USD651591S1 Combination RFID holder and RFID tag General 13 Expired
USD651593S1 RFID holder General 13 Expired
US8870233B2 Swivel joint with uniform ball bearing requirements Mechanical Engineering; Lighting; Heating 12 Active
US11149885B2 Carburizing grade micro-alloy high pressure swivel joints Mechanical Engineering; Lighting; Heating 1 Active
US11365819B2 Clapper valve Mechanical Engineering; Lighting; Heating 1 Active

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