Assignee
AIRGAS INC
US20 patents
Top patents by PatentIndex Score
US8020585B2Sep 20, 2011
Apparatus and method for detecting a leak within a duplex valve assembly
AIRGAS INC48 citations88
US7621302B2Nov 24, 2009
Coriolis dosing system for filling gas cylinders
AIRGAS INC22 citations88
USD921031SJun 1, 2021
Communications terminal display screen with graphic user interface
AIRGAS INC46 citations86
US10112165B1Oct 30, 2018
Apparatus for generating formaldehyde monomer vapor
AIRGAS INC2 citations65
US11311958B1Apr 26, 2022
Digital welding and cutting efficiency analysis, process evaluation and response feedback system for process optimization
AIRGAS INC1 citations60
US10267516B2Apr 23, 2019
Method for controlling the BTU content of a flare gas
AIRGAS INC2 citations59
US9672522B2Jun 6, 2017
System and method for capturing and transferring information onto a gas cylinder using a QR code
AIRGAS INC2 citations56
US10179318B1Jan 15, 2019
Method for generating formaldehyde monomer vapor
AIRGAS INC1 citations55
US11918960B2Mar 5, 2024
System and method for dosing wine barrels with sulfur dioxide gas
AIRGAS INC0 citations54
US11042173B2Jun 22, 2021
Method of mixing at least two gases
AIRGAS INC0 citations54
US11042172B2Jun 22, 2021
Method of mixing at least two gases
AIRGAS INC0 citations54
US11016513B2May 25, 2021
Method of mixing at least two gases
AIRGAS INC0 citations54
US11920732B2Mar 5, 2024
Use of stable isotopes of CO2 to validate cylinder preparation
AIRGAS INC0 citations51
US7598494B2Oct 6, 2009
Automated FTIR gas analyzer
AIRGAS INC6 citations50
US11041590B2Jun 22, 2021
Apparatus for filling pressurized gas cartridges for medical use
AIRGAS INC0 citations48
US10751763B2Aug 25, 2020
Gas sampling methods
AIRGAS INC1 citations48
US11155758B2Oct 26, 2021
Method of dosing a system with HCL then evacuating and purging
AIRGAS INC0 citations46
US12305916B2May 20, 2025
Method to convert excess liquid oxygen into liquid nitrogen
AIRGAS INC0 citations35
US12257656B2Mar 25, 2025
Method for pipe purging
AIRGAS INC0 citations34
US11035570B2Jun 15, 2021
Method for removing large amounts of condensate from an underground vault steam system during startup
AIRGAS INC0 citations31