Eric Hengstenberg
7Patents
5h-index
4Co-inventors
48Inventor score
Filing activity: Jul 1, 1999 → Sep 4, 2003
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6647653B1 | Firing element for muzzleloading rifle | Mechanical Engineering; Lighting; Heating | 14 | Expired |
| US7076902B2 | Firing system for a firearm | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US6996930B2 | Retractable face safety for a firearm | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US6421945B1 | Muzzleloading shotgun with choke | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US6796069B2 | Firing element for muzzleloading rifle | Mechanical Engineering; Lighting; Heating | 5 | Expired |
| US6922932B2 | Action release for a muzzleloader | Mechanical Engineering; Lighting; Heating | 4 | Expired |
| US6223459A | Safety mechanism for side hammer muzzleloading rifles | Mechanical Engineering; Lighting; Heating | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.