Issued Patents All Time
Showing 1–25 of 56 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9249353 | Flexible transparent electrochomic device, and a method for the preparation thereof | Uwe Posset, Bettina Herbig, Gerhard Schottner, Karim Zaghib, Jean-Francois Labrecque +7 more | 2016-02-02 |
| 8592003 | Highly transparent electrochromic coating material, method for producing the same and use of the material | Ayse Cochet, Uwe Posset, Gerhard Schottner, Ricardo Ruffo, Luca Beverina +3 more | 2013-11-26 |
| D644691 | Writing instrument | — | 2011-09-06 |
| 7619114 | Method for the modernization of a urea production plant | — | 2009-11-17 |
| 7279138 | Horizontal chemical reactor, in particular for methanol synthesis | Enrico Rizzi, Umberto Zardi | 2007-10-09 |
| 6825346 | Process for the production of melamine crystals at high pureness | — | 2004-11-30 |
| 6730278 | Process and plant for the production of urea with high conversion yield and low energy consumption | Umberto Zardi | 2004-05-04 |
| 6702992 | Method for modernizing a urea production plant | Federico Zardi | 2004-03-09 |
| 6696026 | Process for combined production of ammonia and urea | Umberto Zardi | 2004-02-24 |
| 6649795 | Process for decomposing a carbamate aqueous solution coming from the urea recovery section of a urea production plant | Federico Zardi, Domenico Romiti | 2003-11-18 |
| 6552224 | Process and plant for the production of urea | Federico Zardi, Domenico Romiti | 2003-04-22 |
| 6342632 | Process and plant for the production of urea with high conversion yield and low energy consumption | Umberto Zardi | 2002-01-29 |
| 6340451 | Method for the simultaneous modernization of a plant for ammonia production and a plant for urea production | Federico Zardi | 2002-01-22 |
| 6334984 | Hydrolysis reactor for removal of urea, ammonia and carbon dioxide from a liquid phase comprising urea in aqueous solution | Federico Zardi | 2002-01-01 |
| 6299849 | Method for in-situ modernization of a heterogeneous exothermic synthesis reactor | Ermanno Filippi | 2001-10-09 |
| 6290920 | Mixing assembly for gaseous flows at different temperatures, in particular for heterogeneous exothermic synthesis reactors | Umberto Zardi | 2001-09-18 |
| 6287525 | Process and plant for urea production with reaction spaces having differentiated yields | — | 2001-09-11 |
| 6284922 | Method for modernizing a urea production plant | Federico Zardi | 2001-09-04 |
| 6274767 | Process for the revamping of urea synthesis plants consisting of a stripper with ammonia | Umberto Zardi | 2001-08-14 |
| 6231827 | Process for combined production of ammonia and urea | Umberto Zardi | 2001-05-15 |
| 6150555 | Process for urea production | Umberto Zardi | 2000-11-21 |
| 5951953 | Mixing assembly for gaseous flows at different temperatures, in particular for heterogeneous exothermic synthesis reactors | Umberto Zardi | 1999-09-14 |
| 5882606 | Method of retrofitting a heterogeneous exothermic synthesis reactor | Umberto Zardi, Ermanno Filippi | 1999-03-16 |
| 5792889 | Process for urea production involving a carbon dioxide stripping step | — | 1998-08-11 |
| 5779988 | Heterogeneous synthesis method and apparatus including wall temperature protection | Umberto Zardi | 1998-07-14 |