Robert S. Simpson
9Patents
6h-index
7Co-inventors
56Inventor score
Filing activity: Dec 23, 1974 → Nov 13, 2013
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5096759A | Laminated roofing sheet | Emerging Cross-Sectional Technologies | 43 | Expired |
| US5142837A | Roof structure | Emerging Cross-Sectional Technologies | 30 | Expired |
| US6479119B1 | Self-adhesive laminate for sealing window frames and method of sealing window frames | Emerging Cross-Sectional Technologies | 15 | Expired |
| US4936938A | Process of making roofing material | Performing Operations; Transporting | 14 | Expired |
| US6627017B2 | Self-adhesive laminate for sealing window frames and method of sealing window frames | Emerging Cross-Sectional Technologies | 10 | Expired |
| US4264993A | Method for space dyeing yarn | Textiles; Paper | 7 | Expired |
| US3960625A | Heat insulating assembly and method for making same | Fixed Constructions | 3 | Expired |
| US8603629B2 | Flashing and waterproofing membrane | Emerging Cross-Sectional Technologies | 1 | Active |
| US9347215B2 | Flashing and waterproofing membrane | Emerging Cross-Sectional Technologies | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.