Inventor

GRAF JOHN C

US4 patents

⚠️ This page may combine multiple inventors who share the name “GRAF JOHN C”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

NASA

2 patents

US7905946B1Mar 15, 2011

Systems and methods for separating a multiphase fluid

NASA20 citations87

US12508541B2Dec 30, 2025

Systems and methods for oxygen concentration with electrochemical stacks in series gas flow

NASA0 citations56

IRPI LLC

2 patents

US12409402B2Sep 9, 2025

Method for multiplex inertial filter, collector and separator

IRPI LLC0 citations48

US11779869B2Oct 10, 2023

Multiplex inertial filter, collector and separator

IRPI LLC0 citations48