| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 3 | |
| #2 | Austria | 2 | |
| #3 | Canada | 2 | |
| #4 | Switzerland | 2 | |
| #5 | Denmark | 1 | |
| #6 | Spain | 1 | |
| #7 | United States | 1 |
| # | Industry | |
|---|---|---|
| #1 | Chemical engineering |
| # | Technology | |
|---|---|---|
| #1 | Chemical or physical processes |
| # | Name | Total Patents |
|---|---|---|
| #1 | Fryklind Knut Edward | 9 |
| #2 | Knut Edward Fryklind | 2 |
| #3 | Gustaf Leonard Laestadius | 1 |
| Publication | Filing date | Title |
|---|---|---|
| CA114060A | Nightsoil decomposing apparatus | |
| US918744A | Apparatus for reducing night-soil and recovering ammonia therefrom. | |
| GB190801356A | Improvements in Plants for Treating Night-soil and the like by Means of Quick-lime | |
| GB190420241A | Process of Producing Ammonia or Ammonium Salts from Nitrogenous Organic Substances containing a High Percentage of Water. | |
| CA78993A | Egg protecting method | |
| GB190109898A | Improved Method of Preserving Eggs. |