Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4874518 | Porous silica microspheres having a silanol enriched surface | Joseph J. Kirkland | 1989-10-17 |
| 4806941 | Microwave component | Reinhard Knochel | 1989-02-21 |
JK
Jurgen Kohler
E.I. Du Pont De Nemours And: 1 patents #116 of 563Top 25%
Overall (1989): #23,219 of 140,708Top 20%
2
Patents 1989