| # | Country | Total Patents | |
|---|---|---|---|
| #1 | United Kingdom | 8 | |
| #2 | Germany | 5 |
| # | Industry | |
|---|---|---|
| #1 | Thermal processes | |
| #2 | Materials and metallurgy | |
| #3 | Foods and drinks | |
| #4 | Surface technology and coating | |
| #5 | Packaging and shipping |
| # | Technology | |
|---|---|---|
| #1 | Metal tempering | |
| #2 | Furnaces | |
| #3 | Details of furnaces | |
| #4 | Bakers' ovens | |
| #5 | Coating metallic material | |
| #6 | Fluid fuel combustion | |
| #7 | Containers for goods storage | |
| #8 | Steam generation | |
| #9 | Casings for combustion chambers |
| # | Name | Total Patents |
|---|---|---|
| #1 | Ipsen Harold Norregaard | 5 |
| Publication | Filing date | Title |
|---|---|---|
| GB934335A | Improvements in heat treating furnaces | |
| GB927767A | Improvements in or relating to wire baskets | |
| GB828419A | Improvements in or relating to heat treating furnaces | |
| GB829168A | Transfer mechanism | |
| GB795120A | Heat exchanger baffle system | |
| GB777881A | A furnace for heat treating metal parts | |
| GB764652A | Heat treating furnace |