Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8282871 | Techniques and tools for assembling and disassembling compactable molds and forming building blocks | Rudolf Alfred Heijden, Richard William Kay, George Briggs Middleton, Robert H. Nippert | 2012-10-09 |
| 8252221 | Compacting techniques for forming lightweight concrete building blocks | Laurian Dobrota, Rudolf Alfred Heijden, Richard William Kay, Robert H. Nippert | 2012-08-28 |
| 7992837 | Techniques and tools for assembling and disassembling compactable molds and forming building blocks | Rudolf Alfred Heijden, Richard William Kay, George Briggs Middleton, Robert H. Nippert | 2011-08-09 |
| 7988123 | Compactable mold for forming building blocks | Laurian Dobrota, Rudolf Alfred Heijden, Richard William Kay, Robert H. Nippert | 2011-08-02 |