Walter Stumpf
24Patents
19h-index
6Co-inventors
74Inventor score
Filing activity: Aug 31, 1977 → Nov 28, 2018
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4578834A | Innerspring construction | Human Necessities | 119 | Expired |
| US4234983A | Thermally welded spring pockets | Performing Operations; Transporting | 111 | Expired |
| US4439977A | Method and apparatus for making a series of pocketed coil springs | Emerging Cross-Sectional Technologies | 108 | Expired |
| US4451946A | Pocketed spring assembly | Human Necessities | 95 | Expired |
| US6347423B1 | Jacketed cushioning elements and assemblies thereof in mattresses and upholstery | Human Necessities | 78 | Expired |
| US4234984A | Pocketed spring assembly | Human Necessities | 66 | Expired |
| US4485506A | Coil spring construction | Human Necessities | 66 | Expired |
| US4895352A | Mattress or cushion spring array | Emerging Cross-Sectional Technologies | 66 | Expired |
| US4523344A | Independent block assembly of springs | Human Necessities | 64 | Expired |
| US4854023A | Method for providing pocketed coil strings having a flat overlap side seam | Emerging Cross-Sectional Technologies | 60 | Expired |
| US4566926A | Method and apparatus for manufacturing innerspring constructions | Emerging Cross-Sectional Technologies | 58 | Expired |
| US4401501A | Apparatus for making assemblies of pocketed springs | Emerging Cross-Sectional Technologies | 45 | Expired |
| US6260331A | Method and apparatus for the manufacture of pocketed springs | Performing Operations; Transporting | 42 | Expired |
| US4986518A | Pocketed coil strings having a flat overlap side seam | Performing Operations; Transporting | 39 | Expired |
| US6131892A | Belted pocketed springs and assemblies thereof | Human Necessities | 35 | Expired |
| US6101697A | Apparatus for producing string of pocket coils | Emerging Cross-Sectional Technologies | 34 | Expired |
| US5319815A | Box spring core with compartmentalized springs | Human Necessities | 34 | Expired |
| US4565046A | Apparatus for manufacturing pocketed coil springs | Emerging Cross-Sectional Technologies | 27 | Expired |
| US4491491A | Ultrasonic separation apparatus | Emerging Cross-Sectional Technologies | 23 | Expired |
| US4519107A | Boxspring having coil compression stops | Human Necessities | 16 | Expired |
| US5483780A | Planar or three-dimensional ceiling latticework consisting of bars and joint-fittings, in particular a walk-on ceiling lattice | Fixed Constructions | 11 | Expired |
| US4165808A | Upholstery coil transfer mechanism | Performing Operations; Transporting | 6 | Expired |
| US4444523A | Device for connecting plates and/or rods | Emerging Cross-Sectional Technologies | 4 | Expired |
| US11408508B2 | Piston ring | Mechanical Engineering; Lighting; Heating | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.