Inventor

SHEETZ BARRY E

US3 patents

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

HELLMANN JOHN R

1 patent

US8193128B2Jun 5, 2012

Treatment of particles for improved performance as proppants

HELLMANN JOHN R32 citations83

ELIXSYS INC

1 patent

US11479472B2Oct 25, 2022

Systems and methods to recover value-added materials from gypsum

ELIXSYS INC0 citations51

DAVY POWERSPORTS INC

1 patent

US11912582B2Feb 27, 2024

Systems and methods to recover value-added materials from gypsum

DAVY POWERSPORTS INC0 citations46