Inventor · Duncan, OK, US

Leonard R. Case

30Patents
14h-index
44Co-inventors
81Inventor score

Filing activity: Mar 31, 1989 → Jun 21, 2021

Most-cited inventions

PatentTitleAreaCited byStatus
USRE47695E1 Electric or natural gas fired small footprint fracturing fluid blending and pumping equipment General 156 Active
US7946340B2 Method and apparatus for orchestration of fracture placement from a centralized well fluid treatment center Fixed Constructions 135 Active
USRE46725E1 Electric or natural gas fired small footprint fracturing fluid blending and pumping equipment General 92 Active
USRE49083E1 Methods of generating and using electricity at a well treatment General 86 Active
USRE49155E1 Electric or natural gas fired small footprint fracturing fluid blending and pumping equipment General 85 Active
USRE49140E1 Methods of performing well treatment operations using field gas General 85 Active
USRE49156E1 Methods of providing electricity used in a fracturing operation General 85 Active
US5027267A Automatic mixture control apparatus and method Performing Operations; Transporting 53 Expired
US6880634B2 Coiled tubing acoustic telemetry system and method Fixed Constructions 52 Expired
US8834012B2 Electric or natural gas fired small footprint fracturing fluid blending and pumping equipment Fixed Constructions 41 Active
US7332094B2 Irradiation system and methods of treating fluids in hydrocarbon industry applications Fixed Constructions 37 Expired
US8444312B2 Methods and systems for integral blending and storage of materials Fixed Constructions 28 Active
US5355951A Method of evaluating oil or gas well fluid process Fixed Constructions 18 Expired
US7963572B2 Differential pitch hammerless connection with hydraulic driving mechanism Emerging Cross-Sectional Technologies 14 Active
US8727004B2 Methods of treating subterranean formations utilizing servicing fluids comprising liquefied petroleum gas and apparatus thereof Fixed Constructions 10 Active
US7621330B1 Methods of using a lower-quality water for use as some of the water in the forming and delivering of a treatment fluid into a wellbore Chemistry; Metallurgy 7 Active
US7621328B1 Methods of pumping fluids having different concentrations of particulate with different concentrations of hydratable additive to reduce pump wear and maintenance in the forming and delivering of a treatment fluid into a wellbore Physics 6 Active
US7678744B2 Hydrocarbon industry servicing fluid and methods of performing service operations Fixed Constructions 4 Active
US7621329B1 Methods of pumping fluids having different concentrations of particulate at different average bulk fluid velocities to reduce pump wear and maintenance in the forming and delivering of a treatment fluid into a wellbore Fixed Constructions 4 Active
US9464500B2 Rapid swelling and un-swelling materials in well tools Fixed Constructions 2 Active
US10125592B2 Methods and systems for treatment of subterranean formations Fixed Constructions 1 Active
USRE50536E1 Methods of performing fracturing operations using an on-site electric power supply General 0 Active
USRE49348E1 Methods of powering blenders and pumps in fracturing operations using electricity General 0 Active
USRE49448E1 Methods of performing oilfield operations using electricity General 0 Active
USRE50233E1 Methods of performing fracturing operations using field gas General 0 Active

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