Inventor
JOHNSON STEVEN DOUGLAS
US49 patents
⚠️ This page may combine multiple inventors who share the name “JOHNSON STEVEN DOUGLAS”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
GEN ELECTRIC
41 patentsUS11047481B2Jun 29, 2021
Seal assembly for a rotary machine
GEN ELECTRIC24 citations94
US10208676B2Feb 19, 2019
Gas turbine engine dual sealing cylindrical variable bleed valve
GEN ELECTRIC25 citations94
US10781709B2Sep 22, 2020
Turbine engine with a seal
GEN ELECTRIC9 citations84
US10774874B2Sep 15, 2020
Fluid bearing assembly
GEN ELECTRIC11 citations84
US11674405B2Jun 13, 2023
Abradable insert with lattice structure
GEN ELECTRIC3 citations73
US11300368B2Apr 12, 2022
Monolithic tube-in matrix heat exchanger
GEN ELECTRIC2 citations71
US10415897B2Sep 17, 2019
Monolithic tube-in matrix heat exchanger
GEN ELECTRIC3 citations71
US11821320B2Nov 21, 2023
Turbine engine with a rotor seal assembly
GEN ELECTRIC2 citations70
US10895324B2Jan 19, 2021
Aspirating face seal assembly for a rotary machine
GEN ELECTRIC4 citations70
US11073091B2Jul 27, 2021
Gas turbine engine with integrated air cycle machine
GEN ELECTRIC2 citations68
US12116896B1Oct 15, 2024
Seal support assembly for a turbine engine
GEN ELECTRIC2 citations67
US10544702B2Jan 28, 2020
Method and apparatus for supplying cooling air to a turbine
GEN ELECTRIC2 citations67
US12359621B2Jul 15, 2025
Thermal management system for a gas turbine engine
GEN ELECTRIC0 citations62
US11920500B2Mar 5, 2024
Passive flow modulation device
GEN ELECTRIC0 citations62
US11788469B2Oct 17, 2023
Thermal management system for a gas turbine engine
GEN ELECTRIC0 citations62
US11732592B2Aug 22, 2023
Method of cooling a turbine blade
GEN ELECTRIC0 citations62
US11692448B1Jul 4, 2023
Passive valve assembly for a nozzle of a gas turbine engine
GEN ELECTRIC1 citations62
US12410724B1Sep 9, 2025
Gas turbine engine with inertially damped seals
GEN ELECTRIC0 citations61
US12366172B1Jul 22, 2025
Seal assembly for a rotary machine having a flexible joint
GEN ELECTRIC0 citations61
US12428969B1Sep 30, 2025
Seal assembly for a gas turbine engine
GEN ELECTRIC1 citations60
US12281850B2Apr 22, 2025
Multi-fluid heat exchanger
GEN ELECTRIC0 citations60
US11965697B2Apr 23, 2024
Multi-fluid heat exchanger
GEN ELECTRIC0 citations60
US12460552B1Nov 4, 2025
Sealing system for a turbomachine
GEN ELECTRIC0 citations59
US12404778B2Sep 2, 2025
Turbine engine with a rotor seal assembly
GEN ELECTRIC0 citations59
US12140034B2Nov 12, 2024
Turbine engine with a rotor seal retraction mechanism
GEN ELECTRIC0 citations58
US12241372B2Mar 4, 2025
Seal assembly for a rotor shaft of a gas turbine
GEN ELECTRIC1 citations57
US12270304B2Apr 8, 2025
Turbine engine with a floating seal assembly
GEN ELECTRIC0 citations56
US11391176B2Jul 19, 2022
Method and apparatus for supplying cooling air to a turbine
GEN ELECTRIC0 citations56
US12292000B1May 6, 2025
Thermal management systems having an oil tank comprising solid-solid phase change material for gas turbine engines
GEN ELECTRIC0 citations54
US12291997B1May 6, 2025
Variable area turbine nozzle assembly
GEN ELECTRIC0 citations52
US12000296B2Jun 4, 2024
Seal for a rotor
GEN ELECTRIC0 citations52
US11674396B2Jun 13, 2023
Cooling air delivery assembly
GEN ELECTRIC0 citations52
US11976562B2May 7, 2024
System for controlling blade clearances within a gas turbine engine
GEN ELECTRIC0 citations51
US11492972B2Nov 8, 2022
Differential alpha variable area metering
GEN ELECTRIC0 citations51
US12305535B2May 20, 2025
Turbine engine having a compressor with an inducer
GEN ELECTRIC0 citations50
US12123350B2Oct 22, 2024
Three-stream engine having a heat exchanger
GEN ELECTRIC0 citations50
US12416261B2Sep 16, 2025
Gas turbine engine
GEN ELECTRIC0 citations49
US11988096B2May 21, 2024
Seal assemblies for turbine engines and related methods
GEN ELECTRIC0 citations49
US12241375B2Mar 4, 2025
Seal support assembly for a turbine engine
GEN ELECTRIC0 citations48
US10815805B2Oct 27, 2020
Apparatus for supplying cooling air to a turbine
GEN ELECTRIC0 citations46
US12398671B2Aug 26, 2025
Compressor assembly for a gas turbine engine having multi-stage bleed extraction
GEN ELECTRIC0 citations44
IBM
8 patentsUS5969893AOct 19, 1999
Tape pre-formatting with uniform data storage segments selectively mapped to fixed or variable sized independently addressable data storage partitions
IBM35 citations92
US6349356B2Feb 19, 2002
Host-available device block map for optimized file retrieval from serpentine tape drives
IBM35 citations91
US6172833B1Jan 9, 2001
Retrieval of serpentine pattern data using a memory device of a tape cartridge
IBM39 citations91
US5710676AJan 20, 1998
Pre-formatting of a storage media having fixed-size partitions
IBM48 citations91
US7392420B2Jun 24, 2008
Automated error recovery of a licensed internal code update on a storage controller
IBM9 citations81
US7266815B2Sep 4, 2007
Automated control of a licensed internal code update on a storage controller
IBM16 citations81
US6064553AMay 16, 2000
Multiple volume computer media tape cartridge
IBM5 citations54
US7565565B2Jul 21, 2009
Automated error recovery of a licensed internal code update on a storage controller
IBM0 citations49