| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United States | 37 | |
| #2 | Canada | 6 | |
| #3 | Belgium | 1 |
| # | Industry | |
|---|---|---|
| #1 | Mechanical elements | |
| #2 | Machines | |
| #3 | Materials and metallurgy | |
| #4 | Environmental technology | |
| #5 | Thermal processes | |
| #6 | Civil engineering |
| # | Technology | |
|---|---|---|
| #1 | Nails | |
| #2 | Pipes | |
| #3 | Unspecified technologies | |
| #4 | Garbage disposal | |
| #5 | Foundry moulding | |
| #6 | General building constructions | |
| #7 | Heat-exchange device details | |
| #8 | Heat-exchanger without contact | |
| #9 | Unspecified technologies | |
| #10 | Alloys |
| # | Name | Total Patents |
|---|---|---|
| #1 | Zifferer Lothar R | 43 |
| Publication | Filing date | Title |
|---|---|---|
| US5251693A | Tube-in-shell heat exchanger with linearly corrugated tubing | |
| US3098268A | Apparatus for vacuum gassing sand forms | |
| US2876510A | Apparatus for curing a moldable object with carbon dioxide | |
| US2928149A | Apparatus and method for curing a formed granular article | |
| US2577837A | Introduction of magnesium into molten iron | |
| US1740803A | Pipe hanger | |
| US1772064A | Expansion bolt | |
| US1772063A | Expansion bolt | |
| US1756419A | Expansion shield | |
| US1773838A | Pipe hanger | |
| US1772062A | Pipe hanger | |
| US1704779A | Concrete insert | |
| US1740802A | Pipe hanger | |
| US1658959A | Toggle bolt | |
| US1614270A | Spoon | |
| US1626905A | Nutcracker | |
| US1656409A | Toggle bolt | |
| US1625013A | Expansion bolt | |
| US1573893A | Adjustable pipe hanger | |
| US1568122A | Clamp |