Issued Patents All Time
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5364952 | Vanadium(IV) oxide bis(dialkyldithiocarbamates), process for their preparation, and oil compositions containing them | Wolfram Spiess, Friedrich H. Franke, Ralf Himmelreich | 1994-11-15 |
| 5308519 | Tungsten hexaldialkyldithiocarbamates, process for their preparation and oil compositions containing them | Wolfram Spiess, Friedrich H. Franke, by Margot M. C. Himmelreich, executor, by Petra Himmelreich, heir, by Ralf Himmelreich, heir | 1994-05-03 |
| 4960933 | Boron tris-(dialkyl-dithiocarbamates) and a process for their preparation | Wolfram Spiess | 1990-10-02 |
| 4879071 | Boron tris-(dialkyl-dithiocarbamates) and a process for their preparation | Wolfram Spiess | 1989-11-07 |
| 4859787 | Process for the preparation of dialkyldithiocarbamates of multivalent metals | Wolfram Spiess | 1989-08-22 |