HC

Henry Cheung

EC Ecotech: 1 patents #1 of 4Top 25%
📍 Kowloon, CA: #4 of 8 inventorsTop 50%
Overall (1997): #143,939 of 185,788Top 80%
1
Patents 1997

Issued Patents 1997

Showing 1–1 of 1 patents

Patent #TitleCo-InventorsDate
5665783 Recyclable regenerant for weak acid ion exhange resins Arthur Katzakian, Jr., Charles Grix, Donald C. McGehee 1997-09-09