HC

Henry Cheung

EC Ecotech: 2 patents #6 of 16Top 40%
Overall (All Time): #1,272,987 of 4,157,543Top 35%
4
Patents All Time

Issued Patents All Time

Patent #TitleCo-InventorsDate
D458868 Assembly of and mounting for triangular cut precious stones Eddie Cheung 2002-06-18
5847315 Solid solution vehicle airbag clean gas generator propellant Arthur Katzakian, Jr., Charles Grix, Donald C. McGehee 1998-12-08
5665783 Recyclable regenerant for weak acid ion exhange resins Arthur Katzakian, Jr., Charles Grix, Donald C. McGehee 1997-09-09
D301398 Shoe polishing set 1989-06-06