Issued Patents All Time
Showing 1–25 of 32 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7163070 | Drill head | Roland Gienau, Wolfgang Ludwig | 2007-01-16 |
| 7033117 | Rock anchor | Wolfgang Ludwig | 2006-04-25 |
| 7025538 | Bonding anchor | Wolfgang Ludwig | 2006-04-11 |
| 6955504 | Attachment element | Robert Gienau, Wolfgang Ludwig | 2005-10-18 |
| 6655889 | Washer for a chemical anchor | Wolfgang Ludwig | 2003-12-02 |
| 6491478 | Tubular anchor | Lutz Sager | 2002-12-10 |
| 6457910 | Tubular anchor | Wolfgang Ludwig | 2002-10-01 |
| 6240696 | Anchor rod for a connection anchoring system | Wolfgang Ludwig | 2001-06-05 |
| 6050157 | Setting tool for anchor rods of attachment anchors | Wolfgang Ludwig, Norbert Daam | 2000-04-18 |
| 6029417 | Anchor rod for an attachment anchor | Wolfgang Ludwig | 2000-02-29 |
| 5669199 | Member for insertion into a borehole in a receiving material | Wolfgang Ludwig | 1997-09-23 |
| 5607005 | Method of fastening an attachment member in a wooden component | — | 1997-03-04 |
| 5332153 | Sleeve for increasing retention value of a screw | Franz Popp, Wolfgang Ludwig, Thomas Schwaninger | 1994-07-26 |
| 5007780 | Attachment member anchored by hardenable mass to panel-shaped structural component | Armin Hoffmann, Wolfgang Ludwig | 1991-04-16 |
| 4993900 | Anchor member secured in place by a permanently hardenable mass | Robert Hugel | 1991-02-19 |
| 4968185 | Metal mesh sleeve for dowel assembly | Andre Luescher | 1990-11-06 |
| 4907917 | Method of securing anchor rods | — | 1990-03-13 |
| 4895055 | Installation tool for an anchor element | Heinz Bisping, Peter Mauthe | 1990-01-23 |
| 4840524 | Anchor member with electrical insulation jacket | Heinz Bisping, Peter Mauthe | 1989-06-20 |
| 4656806 | Expansion anchor assembly | Armin Herb | 1987-04-14 |
| 4620406 | Screen sleeve for use with a hardenable mass for securing an anchoring element | Robert Hugel, Sven Kolb | 1986-11-04 |
| 4601192 | Method of producing an expansion sleeve for a metallic expansion dowel assembly | Gusztav Lang, Peter Froehlich | 1986-07-22 |
| 4564324 | Dowel | — | 1986-01-14 |
| 4471888 | Device for dispensing measured amounts of multi-component materials | Armin Herb, Heinz Gruenewald | 1984-09-18 |
| 4464076 | Expansion dowel assembly | — | 1984-08-07 |