Lawrence J. Grubka
50Patents
15h-index
44Co-inventors
84Inventor score
Filing activity: Sep 10, 1979 → Jun 15, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7765763B2 | Pleated roofing membrane and roofing shingle system | Fixed Constructions | 50 | Active |
| USD695925S1 | Underlay portion of a shingle | General | 46 | Active |
| US5405647A | Method for applying granules to a moving coated asphalt sheet to form areas having sharp leading and trailing edges | Emerging Cross-Sectional Technologies | 36 | Expired |
| US9758970B2 | Laminated hip and ridge shingle | Emerging Cross-Sectional Technologies | 35 | Active |
| US9017791B2 | Shingle blank having formation of individual hip and ridge roofing shingles | Emerging Cross-Sectional Technologies | 21 | Active |
| US10358824B2 | Shingle sealing arrangements | Fixed Constructions | 20 | Active |
| US9097020B2 | Hip and ridge roofing shingle | Emerging Cross-Sectional Technologies | 20 | Active |
| USD628718S1 | Shingle ridge vent | General | 20 | Expired |
| US5283080A | Method and apparatus for manufacturing a granule-covered roofing material by modifying a process parameter in response to measured reflected light | Fixed Constructions | 19 | Expired |
| US9151055B2 | Hip and ridge roofing material | Emerging Cross-Sectional Technologies | 18 | Active |
| US5573810A | Method of applying microorganism resistant granules to a continuously moving strip of asphalt coated material | Emerging Cross-Sectional Technologies | 17 | Expired |
| US9482007B2 | Flexible laminated hip and ridge shingle | Emerging Cross-Sectional Technologies | 16 | Active |
| US4488891A | Method for forming glass fibers | Chemistry; Metallurgy | 15 | Expired |
| US8793955B2 | Multi-layered shingle | Emerging Cross-Sectional Technologies | 15 | Active |
| US9808947B2 | Roofing shingle system | Fixed Constructions | 15 | Active |
| US9290943B2 | Hip and ridge roofing shingle | Emerging Cross-Sectional Technologies | 13 | Active |
| US5858095A | Shuttle cutoff for applying granules to an asphalt coated sheet | Fixed Constructions | 13 | Expired |
| USD755997S1 | Shingle | General | 12 | Active |
| US4664688A | Method and apparatus for forming glass fibers | Chemistry; Metallurgy | 10 | Expired |
| US4272272A | Method and apparatus for production of mineral fibers | Chemistry; Metallurgy | 7 | Expired |
| USD867623S1 | Shingle | General | 7 | Active |
| US6228422A | Shuttle cutoff for applying granules to an asphalt coated sheet | Fixed Constructions | 7 | Expired |
| US10458119B2 | Roofing shingles | Fixed Constructions | 7 | Active |
| USD615218S1 | Shingle ridge vent | General | 7 | Expired |
| USD805220S1 | Shingle | General | 6 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.