Issued Patents All Time
Showing 1–25 of 37 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5419371 | Throttle device, especially for a throttle valve, with throttle cage of ceramic and metal layers | — | 1995-05-30 |
| 5353832 | Ball valve or cock | — | 1994-10-11 |
| 5271427 | Assembly for the control of pressure and volume flow of a flowable medium | — | 1993-12-21 |
| 5205533 | Ball valve | — | 1993-04-27 |
| 5150304 | Method of making an implantable joint prosthesis | Volkhard Schnitzler | 1992-09-22 |
| 5052445 | Pipe section, especially for abrasive and/or corrosive material pipelines | — | 1991-10-01 |
| 5035718 | Joint prosthesis | — | 1991-07-30 |
| 4995427 | Pipe section, especially for abrasive and/or corrosive material pipelines | — | 1991-02-26 |
| 4968004 | Shutoff and control valve | — | 1990-11-06 |
| 4955912 | Joint prosthesis | — | 1990-09-11 |
| 4946379 | Joint prostheses especially hip joint prostheses | — | 1990-08-07 |
| 4936546 | Flow-setting valve | — | 1990-06-26 |
| 4932432 | Shutoff and flow-control valve | — | 1990-06-12 |
| 4910093 | Piston blank for a forged piston | Volkhard Schnitzler, Friedhelm Stahlschmidt | 1990-03-20 |
| 4838312 | Three-way valve | Georg Prokscha | 1989-06-13 |
| 4815704 | Ball valve | — | 1989-03-28 |
| 4804207 | Connector pipe segment | Georg Prokscha | 1989-02-14 |
| 4795133 | Ball valve with a ceramic valve ball and ceramic seat rings | Georg Prokscha, Herbert Heidemeyer | 1989-01-03 |
| 4771803 | Ball cock with sinter ceramic valve seat and valve ball | Georg Prokscha | 1988-09-20 |
| 4769886 | Concrete reinforcing element and method of making a concrete reinforcement | Wolf-Rudiger Linder | 1988-09-13 |
| 4744158 | Excavator tooth assembly for earth moving equipment | Georg Prokscha | 1988-05-17 |
| 4716643 | Method of making a machine part for abrasive applications | — | 1988-01-05 |
| 4712321 | Excavator tooth for earth moving equipment | Georg Prokscha | 1987-12-15 |
| 4711503 | Replaceable tooth for a digging and breaking tool | Georg Prokscha | 1987-12-08 |
| 4711504 | Rotating cutter head | — | 1987-12-08 |