| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Norway | 6 | |
| #2 | Germany | 2 | |
| #3 | Denmark | 2 | |
| #4 | United Kingdom | 2 | |
| #5 | Sweden | 2 | |
| #6 | Belgium | 1 | |
| #7 | Brazil | 1 | |
| #8 | Canada | 1 | |
| #9 | Finland | 1 | |
| #10 | France | 1 | |
| #11 | Israel | 1 | |
| #12 | Italy | 1 | |
| #13 | Romania | 1 | |
| #14 | United States | 1 | |
| #15 | South Africa | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Civil engineering | |
| #3 | Surface technology and coating | |
| #4 | Consumer goods |
| # | Technology | |
|---|---|---|
| #1 | Structural elements | |
| #2 | Layered products | |
| #3 | Upholstering equipment | |
| #4 | Shaping clay | |
| #5 | Shaping of plastics | |
| #6 | Fillers |
| # | Name | Total Patents |
|---|---|---|
| #1 | Grubstad Alfred | 13 |
| #2 | Grubstad A | 6 |
| Publication | Filing date | Title |
|---|---|---|
| IL42641D0 | Method and means for producing outer layers on concrete surfaces | |
| US3687774A | Method of rendering extremely flexible a relatively rigid and brittle sheet,panel or elongated body of cellular plastic material having compressible foamed cells |