| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 5 | |
| #2 | Canada | 4 | |
| #3 | China | 1 | |
| #4 | EPO (European Patent Office) | 1 | |
| #5 | Hong Kong | 1 |
| # | Industry | |
|---|---|---|
| #1 | Surface technology and coating | |
| #2 | Machines | |
| #3 | Measurement |
| # | Technology | |
|---|---|---|
| #1 | Devices for applying fluent materials | |
| #2 | Unspecified technologies | |
| #3 | Measuring volume |
| # | Name | Total Patents |
|---|---|---|
| #1 | Chang Peter J Y | 12 |
| Publication | Filing date | Title |
|---|---|---|
| CN1155510A | Dripless drive resistance assemblies for caulk dispensing devices | |
| CA2166732A1 | Dripless drive mechanism for caulk dispensing device | |
| US5295614A | Double reduction gear for dispensing gun | |
| US5211312A | Caulk dispensing device with thumb-control lock | |
| US5197635A | Variable thrust caulk dispensing device | |
| US4204616A | Adjustable safety guide for skeleton type caulking gun | |
| CA1049464A | Caulking gun | |
| US4081112A | Caulking gun |