RY

Ralph H. Young

Eastman Kodak: 3 patents #55 of 729Top 8%
🗺 New York: #235 of 5,342 inventorsTop 5%
Overall (1989): #7,793 of 140,708Top 6%
3
Patents 1989

Issued Patents 1989

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
4877699 Electrophotographic luminescent amplification process John W. May 1989-10-31
4869984 Electrophotographic elements containing certain naphthoquinone derivatives as electron-transport agents Teh-Ming Kung, William B. Vreeland 1989-09-26
4869985 Electrophotographic elements containing certain naphthoquinone derivatives as electron-transport agents Teh-Ming Kung, William B. Vreeland 1989-09-26