Peter Hedgewick
25Patents
12h-index
5Co-inventors
74Inventor score
Filing activity: Jul 12, 1974 → Feb 9, 2001
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4319690A | Child-resistant closure and container assembly including improved outer cap | Performing Operations; Transporting | 33 | Expired |
| US5002424A | Reflective pavement marker with inclined reinforcing ribs | Fixed Constructions | 31 | Expired |
| US3971623A | Roadway marker | Fixed Constructions | 30 | Expired |
| US4049148A | Child resistant closure assembly | Performing Operations; Transporting | 24 | Expired |
| US4444327A | Tight vial assembly with one-piece cap | Performing Operations; Transporting | 23 | Expired |
| US5308186A | Snowplowable road marker | Fixed Constructions | 20 | Expired |
| US5053182A | One piece safety cap molding apparatus and method | Emerging Cross-Sectional Technologies | 16 | Expired |
| US4090629A | Spiral lock safety closure | Performing Operations; Transporting | 14 | Expired |
| US5061114A | Reflective pavement marker and method of apparatus for making same | Fixed Constructions | 14 | Expired |
| US5502593A | Compact pavement marker | Fixed Constructions | 12 | Expired |
| US4883384A | Protective roadway marker guard rails | Fixed Constructions | 12 | Expired |
| US3984175A | Pavement marker | Fixed Constructions | 12 | Expired |
| USD346984S | Pavement marker | General | 11 | Expired |
| US3933119A | Triangular signalling device | Performing Operations; Transporting | 11 | Expired |
| US6116812A | Snowplowable pavement marker | Fixed Constructions | 9 | Expired |
| US4159779A | Safety package with threaded stop lock | Performing Operations; Transporting | 9 | Expired |
| US5564854A | Snowplowable road marker | Fixed Constructions | 9 | Expired |
| USD327230S | Snowplowable guard member for pavement markers | General | 8 | Expired |
| US5240719A | One piece safety cap molding apparatus | Emerging Cross-Sectional Technologies | 8 | Expired |
| US5975794A | Snowplowable pavement marker | Fixed Constructions | 6 | Expired |
| US5098217A | Abrasion resistant coating for pavement marker | Fixed Constructions | 6 | Expired |
| USD348411S | Pavement marker | General | 4 | Expired |
| US6428238B2 | Road marker collar | Fixed Constructions | 4 | Expired |
| US6200064A | Road marker with collar | Fixed Constructions | 3 | Expired |
| USD426169S | Snowplowable pavement marker | General | 1 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.