| # | Country | Total Patents | |
|---|---|---|---|
| #1 | Canada | 2 | |
| #2 | Germany | 2 | |
| #3 | France | 2 | |
| #4 | United Kingdom | 2 | |
| #5 | Italy | 2 | |
| #6 | Netherlands | 2 | |
| #7 | Sweden | 2 | |
| #8 | United States | 2 | |
| #9 | Taiwan | 1 |
| # | Industry | |
|---|---|---|
| #1 | Environmental technology | |
| #2 | Electrical machinery and energy | |
| #3 | Audio-visual technology |
| # | Technology | |
|---|---|---|
| #1 | Reduction of greenhouse gas emissions | |
| #2 | Casings and printed circuits | |
| #3 | Batteries |
| # | Name | Total Patents |
|---|---|---|
| #1 | Engelstein Charles | 13 |
| #2 | Goodman Harry | 12 |
| #3 | Kassel David L | 12 |
| #4 | Goodman H | 2 |
| #5 | Engelstein C | 2 |
| #6 | Kassel D L | 2 |
| #7 | Blaha Thomas | 1 |
| Publication | Filing date | Title |
|---|---|---|
| TW201937781A | Top loading battery holder | |
| US4495257A | Horizontal battery holder for cylinder cells | |
| US4487820A | Battery holder for coin cells |