Issued Patents All Time
Showing 25 most recent of 72 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12203481 | Compressor arrangement with reduced process gas consumption | Ferdinand Werdecker, Benjamin Hellmig, Maximilian Frank, Florian Bauer, Andreas Fesl | 2025-01-21 |
| 10955054 | Mechanical seal arrangement and well bore conveyor device | Peter Droscher, Andreas Pehl, Dieter Pfeil, Berthold Schulten, Eric Vanhie | 2021-03-23 |
| 7150446 | Dual lift system | James T. Cash, Ken Wendorf | 2006-12-19 |
| 6978977 | Dual lift system | James T. Cash, Ken Wendorf | 2005-12-27 |
| 6783111 | Dual lift system | James T. Cash, Ken Wendorf | 2004-08-31 |
| 6669472 | Dual lift system | James T. Cash, Ken Wendorf | 2003-12-30 |
| 6027416 | Hollow, metallic golf club head with relieved sole and dendritic structure | Richard C. Helmstetter | 2000-02-22 |
| 5749795 | Iron golf club head with dual intersecting recesses | Richard C. Helmstetter | 1998-05-12 |
| 5704849 | Golf club head with audible vibration attenuation | Richard C. Helmstetter | 1998-01-06 |
| 5697853 | Hollow, metallic golf club head with relieved sole and dendritic structure | Richard C. Helmstetter | 1997-12-16 |
| 5669828 | Golf club metallic head formation | — | 1997-09-23 |
| D383512 | Golf putter head with undercut cavity back | Richard C. Helmstetter | 1997-09-09 |
| 5626530 | Golf club head with sole bevel indicia | Richard C. Helmstetter | 1997-05-06 |
| 5611741 | Hollow, large, metallic, golf club head | Richard C. Helmstetter | 1997-03-18 |
| 5605511 | Golf club head with audible vibration attenuation | Richard C. Helmstetter | 1997-02-25 |
| 5605510 | Golf putter with face plate insert | Richard C. Helmstetter | 1997-02-25 |
| D377674 | Golf club head | Richard C. Helmstetter | 1997-01-28 |
| 5588922 | Iron golf club head with forwardly divergent interior recess | Richard C. Helmstetter | 1996-12-31 |
| 5588923 | Golf club head with attached selected swing weight composite | Richard C. Helmstetter | 1996-12-31 |
| 5577550 | Golf club metallic head formation | — | 1996-11-26 |
| D373161 | Golf putter head with face plate insert | Richard C. Helmstetter | 1996-08-27 |
| 5547630 | Wax pattern molding process | — | 1996-08-20 |
| 5485997 | Golf putter head with face plate insert having heightened medial portion | Richard C. Helmstetter | 1996-01-23 |
| 5480152 | Hollow, metallic golf club head with relieved sole and dendritic structure | Richard C. Helmstetter | 1996-01-02 |
| 5474296 | Metal wood golf club with variable faceplate thickness | Richard C. Helmstetter | 1995-12-12 |