| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 8 | |
| #2 | EPO (European Patent Office) | 2 | |
| #3 | Canada | 1 |
| # | Industry | |
|---|---|---|
| #1 | Machines | |
| #2 | Mechanical elements | |
| #3 | Macromolecular chemistry and polymers | |
| #4 | Measurement |
| # | Technology | |
|---|---|---|
| #1 | Pipes | |
| #2 | Unspecified technologies | |
| #3 | Shaping clay | |
| #4 | Shaping of plastics | |
| #5 | Special macromolecular compounds | |
| #6 | Compounding ingredients | |
| #7 | Unspecified technologies | |
| #8 | Testing of structures |
| # | Name | Total Patents |
|---|---|---|
| #1 | Ligon Elmer R | 4 |
| #2 | Reed Norman D | 3 |
| #3 | Thompson Ernest R | 2 |
| #4 | Siegfreid Edward C | 2 |
| #5 | Harwell Conner J | 1 |
| #6 | Gasperi Frank E De | 1 |
| #7 | Reed Norman R | 1 |
| #8 | Medved Thomas M | 1 |
| #9 | Thompson Ernest Robert | 1 |
| #10 | Murphy Sheilds L | 1 |
| Publication | Filing date | Title |
|---|---|---|
| US4317693A | Method and apparatus for forming fiber reinforced coupling sleeves | |
| US4126339A | Plain end pipe fitting | |
| US3500680A | Method and apparatus for testing and handling clay pipe | |
| US3557290A | Method for ram forming monolithic plastic articles | |
| US3424482A | Pipe coupling clamp | |
| US3484517A | Pipe joint of polyurethane | |
| US3465075A | Method for making a monolithic clay fitting | |
| US3454997A | Ceramic molding apparatus |