| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Germany | 9 | |
| #2 | United Kingdom | 3 | |
| #3 | United States | 2 |
| # | Industry | |
|---|---|---|
| #1 | Packaging and shipping | |
| #2 | Chemical engineering |
| # | Technology | |
|---|---|---|
| #1 | Containers for goods storage | |
| #2 | Chemical or physical laboratory devices |
| # | Name | Total Patents |
|---|---|---|
| #1 | Weickel Philipp | 3 |
| #2 | Philipp Weickel | 2 |
| Publication | Filing date | Title |
|---|---|---|
| US1996533A | Dropping stopper | |
| GB384257A | Improvements in drop-delivery stoppers | |
| GB324585A | Improvements in bottle stoppers | |
| GB302877A | Improvements in drop-delivering devices | |
| US1700781A | Bottle stopper with drip pipette secured thereto and extending into the bottle, and air admission |