| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Brazil | 3 | |
| #2 | United States | 3 | |
| #3 | South Africa | 3 | |
| #4 | EPO (European Patent Office) | 2 | |
| #5 | Mexico | 2 | |
| #6 | African Regional Industrial Property Organization | 1 | |
| #7 | Australia | 1 | |
| #8 | Canada | 1 |
| # | Industry | |
|---|---|---|
| #1 | Organic fine chemistry |
| # | Technology | |
|---|---|---|
| #1 | Heterocyclic compounds |
| # | Name | Total Patents |
|---|---|---|
| #1 | Zeitsch Karl J | 13 |
| #2 | Karl J Zeitsch | 1 |
| #3 | Steiner Legal Representative P | 1 |
| #4 | Zeitsch Karl | 1 |
| Publication | Filing date | Title |
|---|---|---|
| MXPA03002238A | Gaseous acid catalysis. | |
| BR0009815A | Process for the production of furfuraldehyde from lignosulfonate residual liquor containing pentose, and reactor to perform the same | |
| BR0008143A | Process and apparatus for the manufacture of furfural |