| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Switzerland | 7 | |
| #2 | Austria | 4 | |
| #3 | United Kingdom | 4 | |
| #4 | United States | 4 | |
| #5 | Canada | 2 | |
| #6 | Spain | 2 |
| # | Industry | |
|---|---|---|
| #1 | Consumer goods | |
| #2 | Control |
| # | Technology | |
|---|---|---|
| #1 | Writing or drawing tools | |
| #2 | Teaching materials |
| # | Name | Total Patents |
|---|---|---|
| #1 | Jahn Albert | 19 |
| #2 | Albert Jahn | 2 |
| Publication | Filing date | Title |
|---|---|---|
| ES113158A1 | A fountain pen with an irregular handle. | |
| CA138823A | Pen | |
| GB191025114A | Improvements in Steel-pens. | |
| US1056754A | Writing-pen. | |
| US920874A | Writing-pen. | |
| GB190720533A | Improvements in Writing Pens. | |
| US878004A | Penholder. | |
| GB190624610A | An Improved Penholder. | |
| US793376A | Stencil. | |
| GB190425425A | Improved Means for Teaching Writing. | |
| CA304132A | Fountain pen |