P

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 patents
US11047481B2Jun 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 patents