Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9447351 | Composition and method to improve the fuel economy of hydrocarbon fueled internal combustion engines | Alfred K. Jung, Ludwig Voelkel, Andrea Misske | 2016-09-20 |
| 5228915 | Fluid loss control additives for oil well cementing compositions | Clare H. Kucera, Gerd Konrad, Heinrich Hartmann | 1993-07-20 |
| 5092935 | Fluid loss control additives for oil well cementing compositions | Clare H. Kucera | 1992-03-03 |
| 5046562 | Fluid loss control additives for oil well cementing compositions | Clare H. Kucera, Gerd Konrad, Heinrich Hartmann | 1991-09-10 |
| 5025040 | Fluid loss control additives for oil well cementing compositions | Clare H. Kucera, Gerd Konrad, Heinrich Hartmann | 1991-06-18 |
| 4933378 | Fluid loss control additives for oil well cementing compositions | Clare H. Kucera, Michael D. Roznowski, Gerd Konrad, Heinrich Hartman | 1990-06-12 |
| 4931489 | Fluid loss control additives for oil well cementing compositions | Clare H. Kucera, Michael D. Roznowski, Gerd Konrad, Heinrich Hartmann | 1990-06-05 |
| 4676916 | Acidizing concentrates for oil well acidizing systems | — | 1987-06-30 |
| 4609477 | Liquid foaming additives used in the stimulation of oil and gas wells | — | 1986-09-02 |