Inventor
SARHAN FREDDIE
US11 patents
Patents
11 patentsUS11611263B1Mar 21, 2023
Electrical power generation
SAPPHIRE TECH INC8 citations83
US12027732B2Jul 2, 2024
Fuel cell temperature control
SAPPHIRE TECH INC3 citations72
US11619140B1Apr 4, 2023
Producing power with turboexpander generators based on specified output conditions
SAPPHIRE TECH INC2 citations71
US11795873B1Oct 24, 2023
Modular design of turboexpander components
SAPPHIRE TECH INC5 citations68
US12212214B2Jan 28, 2025
Hydrogen applications for turboexpander machines
SAPPHIRE TECH INC1 citations62
US12410777B2Sep 9, 2025
Turboexpander islanding operation
SAPPHIRE TECH INC0 citations61
US11994115B2May 28, 2024
Turboexpander islanding operation
SAPPHIRE TECH INC1 citations61
US12546283B2Feb 10, 2026
Electrical power generated by carbon dioxide gas pressure letdown
SAPPHIRE TECH INC0 citations50
US12374960B2Jul 29, 2025
Hydrogen production using electrical power generated by gas pressure letdown
SAPPHIRE TECH INC0 citations50
US12104493B2Oct 1, 2024
Producing power with turboexpander generators based on specified output conditions
SAPPHIRE TECH INC0 citations50
US12286953B2Apr 29, 2025
Energy recovery from a gas well
SAPPHIRE TECH INC0 citations44