David C. Humphreys
11Patents
3h-index
8Co-inventors
45Inventor score
Filing activity: Mar 11, 2014 → May 20, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US9534378B2 | Peel and stick waterproofing material | Emerging Cross-Sectional Technologies | 7 | Active |
| US10428524B2 | Lightweight roofing shingle and method for making same | Emerging Cross-Sectional Technologies | 6 | Active |
| US10697179B2 | Liquid release agent and associated methods of application | Emerging Cross-Sectional Technologies | 5 | Active |
| US11813703B2 | On demand three dimensional roof system manufacturing | Emerging Cross-Sectional Technologies | 3 | Active |
| US10857759B2 | Peel and stick waterproofing material | Emerging Cross-Sectional Technologies | 3 | Active |
| US11186747B2 | System and method for reducing viscosity variations in roofing asphalt | Chemistry; Metallurgy | 1 | Active |
| US9821532B2 | Peel and stick waterproofing material | Emerging Cross-Sectional Technologies | 1 | Active |
| US10415248B2 | Shingle with headlap mask | Emerging Cross-Sectional Technologies | 0 | Active |
| US10914073B2 | Curtain die for applying a liquid release agent to a shingle substrate | Emerging Cross-Sectional Technologies | 0 | Active |
| US11454026B2 | Lightweight roofing shingle and method for making same | Emerging Cross-Sectional Technologies | 0 | Active |
| US11078669B2 | Applying a release material to a shingle during manufacturing | Fixed Constructions | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.