Ferno-Washington, INC.
152Patents
105Active
152Granted
54Portfolio score
Filing activity: Apr 23, 1976 → Jun 17, 2022 · 33 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5509159A | Undercarriage | Human Necessities | 89 | Expired |
| US6423020B1 | Cervical extrication collar | Emerging Cross-Sectional Technologies | 82 | Expired |
| US4037871A | Multiple purpose ambulance cot with removable stretcher top | Human Necessities | 77 | Expired |
| US4767148A | Multiple level roll-in cot | Human Necessities | 68 | Expired |
| US6431319B1 | Height-adjustable equipment cart with detachable table | Performing Operations; Transporting | 65 | Expired |
| US5432966A | Adjustable ambulance cot with trolley mechanism | Human Necessities | 55 | Expired |
| US5058572A | Adjustable cervical collar | Emerging Cross-Sectional Technologies | 54 | Expired |
| US5092722A | Automatically adaptable fastening system for wheeled cots and similar devices | Human Necessities | 53 | Expired |
| US9944217B2 | Equipment mounting system | Human Necessities | 49 | Active |
| US5060637A | Disposable cervical collar | Emerging Cross-Sectional Technologies | 49 | Expired |
| US6435538B1 | Stair chair | Emerging Cross-Sectional Technologies | 48 | Expired |
| US6389623B1 | Ambulance stretcher with improved height adjustment feature | Human Necessities | 44 | Expired |
| US6381781B1 | Combination ambulance cot and chair | Human Necessities | 42 | Expired |
| US5987673A | Undercarriage extension | Human Necessities | 39 | Expired |
| US7520347B2 | Stair chair with an adjustable glide track resistance and braking device | Performing Operations; Transporting | 38 | Active |
| US6701545B1 | Multiple level roll-in cot | Human Necessities | 38 | Expired |
| US5839136A | Cot mountable arm rest and cot incorporating same | Human Necessities | 38 | Expired |
| US5375277A | Collapsible extrication device | Performing Operations; Transporting | 36 | Expired |
| US7694368B2 | Positive lock for height adjustable ambulance cot | Human Necessities | 35 | Active |
| US7631373B2 | Roll-in cot | Human Necessities | 34 | Active |
| US9379504B2 | Track having a backing plate with a plurality of slots and electrical contacts adjacent to each other | Electricity | 34 | Active |
| US8992238B2 | Mounting system having a mounting plate with mounting studs and electrical contacts | Electricity | 34 | Active |
| US4604022A | Trunk loading device for business machines and the like | Performing Operations; Transporting | 34 | Expired |
| US5435027A | Roll-in cot with high ground clearance | Human Necessities | 33 | Expired |
| US6526611B2 | Ambulance stretcher with improved height adjustment feature | Human Necessities | 33 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.