| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 5 | |
| #2 | Poland | 4 | |
| #3 | Canada | 2 | |
| #4 | WIPO (World Intellectual Property Organization) | 2 | |
| #5 | Republic of Korea | 1 | |
| #6 | Taiwan | 1 |
| # | Industry | |
|---|---|---|
| #1 | Engines, pumps and turbines | |
| #2 | Materials and metallurgy | |
| #3 | Machines | |
| #4 | Mechanical elements |
| # | Technology | |
|---|---|---|
| #1 | Foundry moulding | |
| #2 | Internal-combustion piston engines | |
| #3 | Cylinders for combustion engines | |
| #4 | Unspecified technologies | |
| #5 | Special machines | |
| #6 | Pistons and sealings | |
| #7 | Metal tempering |
| # | Name | Total Patents |
|---|---|---|
| #1 | Clark Richard J | 14 |
| #2 | Clark Dennis E | 14 |
| #3 | Clark Richard K | 13 |
| #4 | Budd Richard W | 1 |
| #5 | Moon Norman A | 1 |
| #6 | Clark Eichard K | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US5515770A | Piston having laser hardened primary compression ring groove and method of making same | |
| US5301423A | One piece cylinder head and liner including a draftless water jacket and method for making same | |
| US5337709A | One piece cylinder liner including a draftless water jacket |