Ferris Industries, Inc.
17Patents
0Active
17Granted
32Portfolio score
Filing activity: Nov 5, 1985 → Oct 31, 2002
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5127215A | Dual hydrostatic drive walk-behind mower | Human Necessities | 81 | Expired |
| US5077959A | Dual hydrostatic drive walk-behind mower | Human Necessities | 70 | Expired |
| US6170242A | Lawn mower having independent drive wheel suspension | Performing Operations; Transporting | 70 | Expired |
| US6857254B2 | Mower suspension system and method | Emerging Cross-Sectional Technologies | 60 | Expired |
| US6460318B1 | Lawn mower independent suspension | Emerging Cross-Sectional Technologies | 60 | Expired |
| US5946893A | Lawn mower having cutter deck motion coupled to mower wheel motion | Performing Operations; Transporting | 49 | Expired |
| US5529135A | Steering mechanism for four wheel lawn mower | Human Necessities | 47 | Expired |
| US5433066A | Vehicle frame and cutter assembly lifting mechanism for riding lawn mower | Emerging Cross-Sectional Technologies | 44 | Expired |
| US4920734A | Drive control for walk-behind mower with hydrostatic transmission | Human Necessities | 39 | Expired |
| US6510678B2 | Load compensation adjustment in lawnmower having independent suspension | Emerging Cross-Sectional Technologies | 38 | Expired |
| US6244025A | Load compensation adjustment in lawnmower having independent suspension | Emerging Cross-Sectional Technologies | 32 | Expired |
| US6698172B2 | Lawn mower suspension assembly | Emerging Cross-Sectional Technologies | 27 | Expired |
| US4787195A | Power lawnmower with hydrostatic drive | Human Necessities | 25 | Expired |
| US6062333A | Riding mower with pivoting front wheel assembly | Human Necessities | 22 | Expired |
| US4879867A | Self-propelled mower with hydrostatic drive | Human Necessities | 19 | Expired |
| US4663923A | Self-propelled mower | Emerging Cross-Sectional Technologies | 18 | Expired |
| US6394216B1 | Lawn maintenance vehicle | Human Necessities | 12 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.