Michael D. Harfst
18Patents
7h-index
13Co-inventors
63Inventor score
Filing activity: Aug 18, 1987 → Feb 23, 2022
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5050303A | Chain saw bar fluid passage system | Performing Operations; Transporting | 32 | Expired |
| US4813323A | Chain link with folded over connecting portions | Emerging Cross-Sectional Technologies | 20 | Expired |
| US6748840B2 | Saw chain having drive link with guard feature | Emerging Cross-Sectional Technologies | 14 | Expired |
| US6058825A | Depth gauge for cutter | Emerging Cross-Sectional Technologies | 12 | Expired |
| USD843802S1 | Bumper drive link | General | 9 | Active |
| US6446534B1 | Depth gauge for cutter | Emerging Cross-Sectional Technologies | 8 | Expired |
| US9038519B2 | Apparatus, method, and system for orienting a saw chain link on a sprocket | Emerging Cross-Sectional Technologies | 7 | Active |
| US4873903A | Saw chain with wear link | Emerging Cross-Sectional Technologies | 6 | Expired |
| USD842910S1 | Cutter for saw chain | General | 5 | Active |
| US9757808B2 | Formed wire tie strap with integrated rivet for a saw chain | Emerging Cross-Sectional Technologies | 5 | Active |
| US10406715B2 | Tie rivet for saw chain | Mechanical Engineering; Lighting; Heating | 4 | Active |
| USD839720S1 | Tie strap | General | 2 | Active |
| US11247363B2 | Saw chain presets | Performing Operations; Transporting | 1 | Active |
| US11273573B2 | Saw chain link with one or more oversized rivet holes | Performing Operations; Transporting | 0 | Active |
| US11090741B2 | High efficiency saw chain | Performing Operations; Transporting | 0 | Active |
| US10195759B2 | Tie strap with hardened integrated rivet for a saw chain | Emerging Cross-Sectional Technologies | 0 | Active |
| US12365109B2 | Saw chain link with one or more oversized rivet holes | Performing Operations; Transporting | 0 | Active |
| US11926070B2 | Targeted oil delivery for chain saw bars | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.