Prosecution Insights
Last updated: April 19, 2026

Chart Energy & Chemicals Inc.

2 pending office actions

Portfolio Summary

2
Total Pending OAs
1
Final Rejections
1
Non-Final OAs

Pending Office Actions

App #TitleExaminerArt UnitStatusFiled
18317326 System and Method for Cooling Fluids Containing Hydrogen or Helium PETTITT, JOHN F 3763 Non-Final OA May 15, 2023
16385269 Mixed Refrigerant Liquefaction System and Method with Pre-Cooling PETTITT, JOHN F 3763 Final Rejection Apr 16, 2019

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