WH

Wilfried G. Holtje

EA E.I. Du Pont De Nemours And: 2 patents #2,942 of 8,010Top 40%
CI Ciba-Geigy: 1 patents #1,572 of 2,867Top 55%
📍 Wilmington, DE: #1,229 of 3,182 inventorsTop 40%
🗺 Delaware: #2,574 of 7,163 inventorsTop 40%
Overall (All Time): #1,680,506 of 4,157,543Top 45%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
4544746 Process for preparing 2-anilinoacridone 1985-10-01
4426231 Light stable quinacridonequinone pigments 1984-01-17
4286998 Light stable quinacridonequinone yellow pigment George H. Senkler, Jr., Arthur J. Taggi 1981-09-01