Paul Warfel
22Patents
11h-index
29Co-inventors
75Inventor score
Filing activity: Jan 25, 1993 → Jan 31, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5485814A | Resetting ignition switch for a gasoline powered chain saw | Mechanical Engineering; Lighting; Heating | 26 | Expired |
| US7434502B2 | Bar knob with cam-operated locking mechanism | Emerging Cross-Sectional Technologies | 25 | Expired |
| US6560879B2 | Chain saw adjuster | Performing Operations; Transporting | 25 | Expired |
| USD365262S | Chainsaw housing | General | 21 | Expired |
| US6708958B1 | Air valve mechanism for two-cycle engine | Emerging Cross-Sectional Technologies | 19 | Expired |
| US5345684A | Flexible line trimmer having an anti-vibration handle | Human Necessities | 19 | Expired |
| US7107689B2 | Bar knob with integrated lock | Performing Operations; Transporting | 17 | Expired |
| USD484768S1 | Drive socket | General | 16 | Expired |
| US8925509B2 | Fuel delivery system for an internal combustion engine | Mechanical Engineering; Lighting; Heating | 11 | Active |
| USD449954S | Brewing apparatus | General | 11 | Expired |
| US7155832B2 | Chain saw with tool-less chain tensioner and guide bar lock | Performing Operations; Transporting | 11 | Expired |
| US7481000B2 | Chainsaw bar adjustment assembly with breakaway adjustment pin | Emerging Cross-Sectional Technologies | 9 | Expired |
| US9103299B2 | Fuel delivery system for an internal combustion engine | Mechanical Engineering; Lighting; Heating | 7 | Active |
| US6691988B1 | Tamper resistant carburetor mixture needles | Emerging Cross-Sectional Technologies | 5 | Expired |
| US7121533B2 | Air filter housing with tamper resistant carburetor feature | Emerging Cross-Sectional Technologies | 5 | Expired |
| US7107963B2 | Ignition systems for portable power tools | Mechanical Engineering; Lighting; Heating | 3 | Expired |
| US7021252B2 | Sas piston channel for optimum air scavenging | Mechanical Engineering; Lighting; Heating | 3 | Expired |
| US6796551B2 | Tamper resistant carburetor mixture needles | Emerging Cross-Sectional Technologies | 3 | Expired |
| US6973899B2 | Stratified air scavenged two-cycle engine with air flow | Mechanical Engineering; Lighting; Heating | 3 | Expired |
| US6848399B2 | Scavenging insert for an engine | Mechanical Engineering; Lighting; Heating | 2 | Expired |
| US7025034B2 | Ignition systems for portable power tools | Mechanical Engineering; Lighting; Heating | 2 | Expired |
| US11577422B2 | Display or storage assembly for handheld power tool | Performing Operations; Transporting | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.