| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 3 | |
| #2 | United States | 3 | |
| #3 | Canada | 2 | |
| #4 | France | 2 | |
| #5 | Germany | 1 | |
| #6 | Spain | 1 |
| # | Industry | |
|---|---|---|
| #1 | Basic materials chemistry | |
| #2 | Civil engineering | |
| #3 | Macromolecular chemistry and polymers | |
| #4 | Materials and metallurgy | |
| #5 | Packaging and shipping | |
| #6 | Machines |
| # | Technology | |
|---|---|---|
| #1 | Working-up pitch | |
| #2 | Construction of roads | |
| #3 | Macromolecular compounds compositions | |
| #4 | Containers for goods storage | |
| #5 | Building materials | |
| #6 | Shaping clay |
| # | Name | Total Patents |
|---|---|---|
| #1 | A Prodorite S | 3 |
| #2 | Levy Marcel | 3 |
| #3 | Marcel Levy | 1 |
| #4 | Georg Zimmermann | 1 |
| #5 | William Fender Harold | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US1894371A | Acidproof tank | |
| US1785130A | Process for making road surfaces | |
| ES103121A1 | Procedure for the construction of street coatings. | |
| US1901792A | Bituminous and like compositions | |
| DE500280C | Process for producing a pitch with a high critical temperature | |
| CA282519A | Road surface | |
| CA325359A | Pipe moulding method |