Inventor
FISCHER JOHN
US68 patents
⚠️ This page may combine multiple inventors who share the name “FISCHER JOHN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
NAT SERVICE ALLIANCE—HOUSTON LLC
26 patentsUS10871045B2Dec 22, 2020
Parameter monitoring and control for an electric driven hydraulic fracking system
NAT SERVICE ALLIANCE—HOUSTON LLC117 citations99
US10794165B2Oct 6, 2020
Power distribution trailer for an electric driven hydraulic fracking system
NAT SERVICE ALLIANCE—HOUSTON LLC247 citations99
US10753165B1Aug 25, 2020
Parameter monitoring and control for an electric driven hydraulic fracking system
NAT SERVICE ALLIANCE—HOUSTON LLC198 citations99
US10753153B1Aug 25, 2020
Variable frequency drive configuration for electric driven hydraulic fracking system
NAT SERVICE ALLIANCE—HOUSTON LLC173 citations99
US10988998B2Apr 27, 2021
Electric driven hydraulic fracking operation
NAT SERVICE ALLIANCE—HOUSTON LLC63 citations98
US11286736B2Mar 29, 2022
Parameter monitoring and control for an electric driven hydraulic fracking system
NAT SERVICE ALLIANCE—HOUSTON LLC15 citations94
US11156044B2Oct 26, 2021
Parameter monitoring and control for an electric driven hydraulic fracking system
NAT SERVICE ALLIANCE—HOUSTON LLC13 citations94
US11125034B2Sep 21, 2021
Variable frequency drive configuration for electric driven hydraulic fracking system
NAT SERVICE ALLIANCE—HOUSTON LLC11 citations94
US10982498B1Apr 20, 2021
Parameter monitoring and control for an electric driven hydraulic fracking system
NAT SERVICE ALLIANCE—HOUSTON LLC14 citations94
US10975641B1Apr 13, 2021
Variable frequency drive configuration for electric driven hydraulic fracking system
NAT SERVICE ALLIANCE—HOUSTON LLC10 citations94
US11795800B2Oct 24, 2023
Power distribution trailer for an electric driven hydraulic fracking system
NAT SERVICE ALLIANCE—HOUSTON LLC7 citations86
US11788396B2Oct 17, 2023
Electric driven hydraulic fracking system
NAT SERVICE ALLIANCE—HOUSTON LLC4 citations86
US11773664B1Oct 3, 2023
Variable frequency drive configuration for electric driven hydraulic fracking system
NAT SERVICE ALLIANCE—HOUSTON LLC4 citations86
US11708733B2Jul 25, 2023
Parameter monitoring and control for an electric driven hydraulic fracking system
NAT SERVICE ALLIANCE—HOUSTON LLC6 citations86
US11668144B2Jun 6, 2023
Variable frequency drive configuration for electric driven hydraulic fracking system
NAT SERVICE ALLIANCE—HOUSTON LLC4 citations86
US11492860B2Nov 8, 2022
Variable frequency drive configuration for electric driven hydraulic fracking system
NAT SERVICE ALLIANCE—HOUSTON LLC7 citations86
US11466550B2Oct 11, 2022
Power distribution trailer for an electric driven hydraulic fracking system
NAT SERVICE ALLIANCE—HOUSTON LLC6 citations86
US11434709B2Sep 6, 2022
Electric driven hydraulic fracking operation
NAT SERVICE ALLIANCE—HOUSTON LLC7 citations86
US11274512B2Mar 15, 2022
Electric driven hydraulic fracking operation
NAT SERVICE ALLIANCE—HOUSTON LLC6 citations86
US11220896B2Jan 11, 2022
Electric driven hydraulic fracking system
NAT SERVICE ALLIANCE—HOUSTON LLC7 citations86
US11319762B2May 3, 2022
Variable frequency drive configuration for electric driven hydraulic fracking system
NAT SERVICE ALLIANCE—HOUSTON LLC4 citations84
US11168556B2Nov 9, 2021
Power distribution trailer for an electric driven hydraulic fracking system
NAT SERVICE ALLIANCE—HOUSTON LLC5 citations84
US11142972B1Oct 12, 2021
Electric driven hydraulic fracking operation
NAT SERVICE ALLIANCE—HOUSTON LLC7 citations84
US11053758B2Jul 6, 2021
Electric driven hydraulic fracking system
NAT SERVICE ALLIANCE—HOUSTON LLC5 citations84
US10876358B2Dec 29, 2020
Variable frequency drive configuration for electric driven hydraulic fracking system
NAT SERVICE ALLIANCE—HOUSTON LLC5 citations84
US10851635B1Dec 1, 2020
Electric driven hydraulic fracking system
NAT SERVICE ALLIANCE—HOUSTON LLC8 citations84
HALLIBURTON ENERGY SERVICES INC
7 patentsUS12006807B2Jun 11, 2024
Power distribution trailer for an electric driven hydraulic fracking system
HALLIBURTON ENERGY SERVICES INC5 citations86
US12000256B2Jun 4, 2024
Electric driven hydraulic fracking system
HALLIBURTON ENERGY SERVICES INC4 citations86
US11976524B2May 7, 2024
Parameter monitoring and control for an electric driven hydraulic fracking system
HALLIBURTON ENERGY SERVICES INC4 citations86
US11976525B2May 7, 2024
Electric driven hydraulic fracking operation
HALLIBURTON ENERGY SERVICES INC4 citations86
US11939828B2Mar 26, 2024
Variable frequency drive configuration for electric driven hydraulic fracking system
HALLIBURTON ENERGY SERVICES INC4 citations86
US12503923B2Dec 23, 2025
Variable frequency drive configuration for electric driven hydraulic fracking system
HALLIBURTON ENERGY SERVICES INC0 citations63
US12460524B2Nov 4, 2025
Electric driven hydraulic fracking system
HALLIBURTON ENERGY SERVICES INC0 citations63
NAT SERVICE ALLIANCE HOUSTON LLC
4 patentsUS11739602B2Aug 29, 2023
Electric driven hydraulic fracking operation
NAT SERVICE ALLIANCE HOUSTON LLC6 citations86
US11560764B2Jan 24, 2023
Electric driven hydraulic fracking operation
NAT SERVICE ALLIANCE HOUSTON LLC6 citations86
US10989031B2Apr 27, 2021
Power distribution trailer for an electric driven hydraulic fracking system
NAT SERVICE ALLIANCE HOUSTON LLC9 citations86
US11473381B2Oct 18, 2022
Parameter monitoring and control for an electric driven hydraulic fracking system
NAT SERVICE ALLIANCE HOUSTON LLC5 citations84
FISCHER JOHN
3 patentsUSD286650SNov 11, 1986
Writing instrument sleeve
FISCHER JOHN31 citations92
US7687244B1Mar 30, 2010
Chromogenic composition for detecting spilled blood and associated methods
FISCHER JOHN10 citations83
US5212269AMay 18, 1993
Main chain chromophoric polymers with second order nonlinear optical properties
FISCHER JOHN15 citations71
KOPPERS CO INC
2 patentsDREIER CORP
2 patentsNAT SERVICE ALLIANCE-HOUSTON LLC
1 patentDOLGANOW ANDREW
1 patentSTENGER SMITH JOHN D
1 patentSORRINI PIERO
1 patentINTERLOCK GROUP LIMITED
1 patentOROLIA USA INC
1 patentShowing the top 50 of 68 patents by PatentIndex Score.