R. Keith Barker — 2 Patents in 2019

HUHolystone Usa: 2 patents #1 of 1Top 100%

Walhalla, SC: #1 of 3 inventorsTop 35%

South Carolina: #310 of 1,980 inventorsTop 20%

Overall (2019): #129,941 of 560,194Top 25%

2 Patents 2019

Issued Patents 2019

Showing 1–2 of 2 patents

Patent #	Title	Co-Inventors	Date
10513082	Monolithically poured concrete CNG tank with internal support columns	—	2019-12-24
10407294	Fuel island redundant monitoring system	—	2019-09-10