Spuhl GmbH
20Patents
6Active
20Granted
38Portfolio score
Filing activity: Jul 24, 1978 → Jun 7, 2017 · 1 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4609186A | Mattress spring core with open ended coils | Human Necessities | 53 | Expired |
| US4413659A | Apparatus for feeding spiral wire springs from coiling machines to a spring core assembly machine | Performing Operations; Transporting | 16 | Expired |
| US4354819A | Multi-pivotable mold carrier clamping apparatus | Performing Operations; Transporting | 15 | Expired |
| US5054178A | Process and apparatus for the production of innersprings for mattresses and upholstered furniture | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4269300A | Method and apparatus for separating helical springs closed by knots at their winding ends | Emerging Cross-Sectional Technologies | 7 | Expired |
| US6834477B2 | Method and system for forming strings of pocketed coil springs with traction mechanism | Performing Operations; Transporting | 7 | Expired |
| US4231723A | Metering and conveyor arrangement | Performing Operations; Transporting | 6 | Expired |
| US4476702A | Apparatus for measuring and regulating the position of a wire end of a spiral spring in a coiling machine | Performing Operations; Transporting | 5 | Expired |
| US5136867A | Automatic frame bending machine for bending of steel rods or band steel | Performing Operations; Transporting | 5 | Expired |
| US5042124A | Machine for punching out butterfly clips for fastening to a frame of a spring core | Emerging Cross-Sectional Technologies | 3 | Expired |
| US5209014A | Molds for the growing of seedlings | Emerging Cross-Sectional Technologies | 3 | Expired |
| US9327933B2 | Device and method for conveying a spring string | Performing Operations; Transporting | 2 | Active |
| US7458243B2 | Spring winding machine and a method for controlling a spring winding machine | Performing Operations; Transporting | 2 | Expired |
| US4368761A | Centering device for a spring core mounting machine | Performing Operations; Transporting | 1 | Expired |
| US5285674A | Measurement device for detecting gas charge of a plastic component | Physics | 1 | Expired |
| US8393131B2 | Device for the assembly of pocket spring strings | Emerging Cross-Sectional Technologies | 1 | Active |
| US9038432B2 | Apparatus and method for producing springs | Performing Operations; Transporting | 1 | Active |
| US8968056B2 | System for machining the running surface on skis and snowboards | Human Necessities | 0 | Active |
| US11299391B2 | Apparatus for manufacturing a cover layer of a fleece material, for an innerspring unit | Performing Operations; Transporting | 0 | Active |
| US9682852B2 | Apparatus for forming a tube of pocket material and method for manufacturing a pocket spring string | Performing Operations; Transporting | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.