William D. Sprick
21Patents
11h-index
8Co-inventors
68Inventor score
Filing activity: Nov 1, 1996 → May 14, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5794803A | Child-resistant measuring cup closure and dispensing container | Performing Operations; Transporting | 56 | Expired |
| US5836466A | Safety closure and container assembly | Performing Operations; Transporting | 43 | Expired |
| US6543650B1 | Double shell dispenser | Performing Operations; Transporting | 25 | Expired |
| USD426159S | Safety closure having oversized thumbpads | General | 23 | Expired |
| US6854614B2 | Closure having an improved thread design | Performing Operations; Transporting | 21 | Expired |
| US6698605B2 | Modified bottle neck for use with child resistant caps | Performing Operations; Transporting | 18 | Expired |
| US7828166B1 | Dispensing closure with child resistant feature | Performing Operations; Transporting | 14 | Active |
| USD421389S | Safety closure having a lug window | General | 14 | Expired |
| USD418419S | Slotted safety closure having oversized thumbpads | General | 13 | Expired |
| USD421223S | Slotted safety closure having oversized thumbpads | General | 12 | Expired |
| US5950851A | Safety closure and container having biasing means | Performing Operations; Transporting | 11 | Expired |
| USRE39727E1 | Double shell dispenser | General | 8 | Expired |
| USD419451S | Safety closure having oversized thumbpads | General | 8 | Expired |
| US7635071B1 | Double shell dispensing closure with a reverse tapered drop lug | Performing Operations; Transporting | 8 | Active |
| US7648051B1 | Double shell dispensing closure with a reverse tapered drop lug | Performing Operations; Transporting | 7 | Active |
| US8245880B1 | Closure with rotational stop | Performing Operations; Transporting | 5 | Active |
| US10207840B2 | Closure | Performing Operations; Transporting | 2 | Active |
| US10689158B2 | Closure | Performing Operations; Transporting | 2 | Active |
| US11040807B2 | Closure | Performing Operations; Transporting | 0 | Active |
| US11628975B2 | Closure | Performing Operations; Transporting | 0 | Active |
| US11912468B2 | Closure | Performing Operations; Transporting | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.