| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 6 | |
| #2 | United States | 6 | |
| #3 | France | 5 | |
| #4 | Switzerland | 4 | |
| #5 | Norway | 4 | |
| #6 | Spain | 3 | |
| #7 | Finland | 3 | |
| #8 | Romania | 3 | |
| #9 | Sweden | 3 | |
| #10 | Belgium | 2 | |
| #11 | Denmark | 2 | |
| #12 | United Kingdom | 2 | |
| #13 | Czechoslovakia | 1 | |
| #14 | Hungary | 1 | |
| #15 | Japan | 1 | |
| #16 | USSR (Union of Socialist Soviet Republics) | 1 | |
| #17 | Turkey | 1 | |
| #18 | Yugoslavia (Serbia and Montenegro) | 1 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering | |
| #2 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Separation | |
| #2 | Unspecified technologies | |
| #3 | Milling | |
| #4 | Chemical or physical processes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Berz Wolfgang | 29 |
| #2 | Berz Max | 2 |
| #3 | Berz W | 2 |
| #4 | Brets Volfgang | 1 |
| #5 | Le E Leiersederet | 1 |
| #6 | Le M Berz | 1 |
| #7 | Berz M | 1 |
| #8 | Max Berz | 1 |
| #9 | Borufugangu Berutsu | 1 |
| #10 | Wolfgang Berz | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US3871846A | Dust filter arrangement | |
| CA986427A | Dust filter | |
| US3458142A | Roller-crushing mill | |
| GB928718A | Improvements in or relating to pulverizing mills | |
| GB820732A | Apparatus for pre-heating and/or calcining dry powder | |
| CA876280A | Apparatus for separating suspended solid particles from a carrier gas | |
| CA813328A | Roller-crushing mill |