Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6977088 | Method for pest control and for producing low-concentration phosphine air mixtures and device for carrying out a method of this type | Rainer Schellhaas | 2005-12-20 |
| 4812291 | Method of fumigating agricultural products using hydrogen phosphide | Wolfgang Friemel, Volker Barth, Reiner Ehret | 1989-03-14 |