Edward E. Heald
8Patents
7h-index
12Co-inventors
56Inventor score
Filing activity: Sep 24, 1987 → May 13, 1999
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| USD422717S | Ladder top | General | 37 | Expired |
| USD310884S | Cover for tops of ladders | General | 33 | Expired |
| USD413990S | Front face of a ladder top | General | 14 | Expired |
| USD404503S | Caddy top | General | 12 | Expired |
| US5791439A | Ladder, member for connecting a rail to a horizontal element of a ladder, and method, and apparatus and method for holding a washer | Mechanical Engineering; Lighting; Heating | 9 | Expired |
| USD397228S | Step ladder | General | 8 | Expired |
| US5636706A | Ladder, member for connecting a rail to a horizontal element of a ladder, and method | Mechanical Engineering; Lighting; Heating | 7 | Expired |
| US6142255A | Ladder, member for connecting a rail to a horizontal element of a ladder, and method | Mechanical Engineering; Lighting; Heating | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.