Volkmann GMBH
29Patents
7Active
29Granted
37Portfolio score
Filing activity: Sep 26, 1980 → Apr 13, 2022 · 2 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US8157483B2 | Method and device for rendering vacuum conveyors inert | Performing Operations; Transporting | 15 | Active |
| US6848641B2 | Actuating valve for bidirectional pneumatic cylinder and use of such actuating valve for bobbin creels controlled by pneumatic cylinders | Mechanical Engineering; Lighting; Heating | 9 | Expired |
| US7354469B2 | Vacuum conveyor device with a multi-stage filter system | Performing Operations; Transporting | 7 | Expired |
| US4391087A | Twisting apparatus | Textiles; Paper | 5 | Expired |
| US6425236B1 | Cable and yarn double-twisting spindle | Textiles; Paper | 5 | Expired |
| US8967422B2 | Multilevel sheet metal container with outwardly beaded end faces | Performing Operations; Transporting | 5 | Active |
| US6347505B2 | Yarn brake and a two-for-one twisting spindle having such a yarn brake | Textiles; Paper | 4 | Expired |
| US7368671B2 | Vacuum conveying apparatus with a weighing or metering device | Physics | 4 | Expired |
| US8349048B2 | Filter arrangement | Performing Operations; Transporting | 3 | Active |
| US6047535A | Method for contact-free energy and signal transmission on textile machines, especially twisting machines as well as device for performing the method | Textiles; Paper | 3 | Expired |
| US6035620A | Twisting spindle, especially two-for-one or direct cabling spindle | Textiles; Paper | 3 | Expired |
| US4392340A | Yarn monitor for two-yarn cabling or twisting machine | Textiles; Paper | 3 | Expired |
| US6786441B2 | Bobbin creel for textile machines and actuating valve for adjusting such a bobbin creel | Mechanical Engineering; Lighting; Heating | 2 | Expired |
| US5873231A | Method and device for open end spinning of yarns | Textiles; Paper | 2 | Expired |
| US6196491A | Method and device for winding yarn onto a conical spool body | Performing Operations; Transporting | 2 | Expired |
| US6311468A | Device for producing a twisted yarn by an integrated spinning and twisting process as well as fiber feed tube | Textiles; Paper | 1 | Expired |
| US6047537A | Method for producing a twisted yarn by an integrated spinning and twisting process according to the two-for-one principle as well as device for performing the method | Textiles; Paper | 1 | Expired |
| US11987488B2 | Module connector, module container, and sealing element therefor | Mechanical Engineering; Lighting; Heating | 1 | Active |
| US6401443B2 | Yarn brake and a two-for-one twisting spindle having such a yarn brake | Textiles; Paper | 1 | Expired |
| US12023866B2 | Workpiece cleaning device, cleaning process and manufacturing process | Performing Operations; Transporting | 0 | Active |
| US6681554B2 | Yarn wetting apparatus particularly suitable for a two-for-one twisting spindle as well as two-for-one twisting spindle having such a yarn wetting apparatus | Textiles; Paper | 0 | Expired |
| US6006509A | Method for continuosly producing a twisted yard with minimal curling tendency | Textiles; Paper | 0 | Expired |
| US10874971B2 | Operating and change apparatus for filter bodies; filter bodies and procedure for filter change as well as a conveyor with filters | Performing Operations; Transporting | 0 | Active |
| US5964083A | Method for producing a twisted yarn in a combined spinning and twisting process | Textiles; Paper | 0 | Expired |
| US6244028A | Spindle | Textiles; Paper | 0 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.