Nick J. Hendriksma
46Patents
16h-index
28Co-inventors
81Inventor score
Filing activity: Feb 18, 1999 → Apr 30, 2018
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6668779B2 | Two-step finger follower rocker arm assembly | Mechanical Engineering; Lighting; Heating | 59 | Expired |
| US6615782B1 | Two-step finger follower rocker arm | Emerging Cross-Sectional Technologies | 56 | Expired |
| US7305951B2 | Two-step roller finger follower | Emerging Cross-Sectional Technologies | 55 | Expired |
| US6325030A | Roller finger follower for valve deactivation | Mechanical Engineering; Lighting; Heating | 52 | Expired |
| US7882814B2 | Inner arm stop for a switchable rocker arm | Emerging Cross-Sectional Technologies | 52 | Active |
| US6513470B1 | Deactivation hydraulic valve lifter | Emerging Cross-Sectional Technologies | 48 | Expired |
| US7047925B2 | Dual feed hydraulic lash adjuster | Mechanical Engineering; Lighting; Heating | 42 | Expired |
| US6321705A | Roller finger follower for valve deactivation | Mechanical Engineering; Lighting; Heating | 42 | Expired |
| US6691657B2 | Two-step finger follower rocker arm | Mechanical Engineering; Lighting; Heating | 41 | Expired |
| US6499451B1 | Control system for variable activation of intake valves in an internal combustion engine | Mechanical Engineering; Lighting; Heating | 38 | Expired |
| US6591798B2 | Variable valve actuation assembly for an internal combustion engine | Emerging Cross-Sectional Technologies | 35 | Expired |
| US6439179B2 | Deactivation and two-step roller finger follower having a bracket and lost motion spring | Mechanical Engineering; Lighting; Heating | 31 | Expired |
| US6966291B1 | Latch timing mechanism for a two-step roller finger cam follower | Mechanical Engineering; Lighting; Heating | 29 | Expired |
| US6814040B2 | Deactivation roller hydraulic valve lifter | Emerging Cross-Sectional Technologies | 17 | Expired |
| US6668776B2 | Deactivation roller hydraulic valve lifter | Emerging Cross-Sectional Technologies | 17 | Expired |
| US6604498B2 | Actuation mechanism for mode-switching roller finger follower | Mechanical Engineering; Lighting; Heating | 16 | Expired |
| US6039017A | Hydraulic lash adjuster with lash | Mechanical Engineering; Lighting; Heating | 15 | Expired |
| US7673601B2 | Valve lifter assembly for selectively deactivating a cylinder | Emerging Cross-Sectional Technologies | 14 | Active |
| US7263956B2 | Valve lifter assembly for selectively deactivating a cylinder | Emerging Cross-Sectional Technologies | 12 | Expired |
| US6976463B2 | Anti-rotation deactivation valve lifter | Mechanical Engineering; Lighting; Heating | 12 | Expired |
| US6481400B2 | Valve deactivation assembly with partial journal bearings | Mechanical Engineering; Lighting; Heating | 11 | Expired |
| US6755167B2 | Two-step roller finger cam follower having spool-shaped low-lift roller | Emerging Cross-Sectional Technologies | 10 | Expired |
| US6302075A | Roller finger follower shaft retention apparatus | Mechanical Engineering; Lighting; Heating | 10 | Expired |
| US6640759B1 | Two-step finger follower rocker arm | Emerging Cross-Sectional Technologies | 9 | Expired |
| US7104232B2 | Deactivation roller hydraulic valve lifter | Emerging Cross-Sectional Technologies | 7 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.