Issued Patents All Time
Showing 1–25 of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9702110 | Panel connector and method of use | William B. Hilfiker, Harold K. Hilfiker | 2017-07-11 |
| 9011048 | Method for constructing a mechanically stabilized earthen embankment using semi-extensible steel soil reinforcements | William B. Hilfiker, Harold K. Hilfiker | 2015-04-21 |
| 8079782 | Semi-extensible steel soil reinforcements for mechanically stabilized embankments | William B. Hilfiker, Harold K. Hilfiker | 2011-12-20 |
| 7281882 | Retaining wall having polymeric reinforcing mats | Harold K. Hilfiker | 2007-10-16 |
| 7073983 | Earthen retaining wall having flat soil reinforcing mats which may be variably spaced | Harold K. Hilfiker | 2006-07-11 |
| 6857823 | Earthen retaining wall having flat soil reinforcing mats which may be variably spaced | Harold K. Hilfiker | 2005-02-22 |
| 6517293 | Anchor grid connection element | Thomas P. Taylor, James Scott Bagwell | 2003-02-11 |
| 6024516 | System for securing a face panel to an earthen formation | Thomas P. Taylor | 2000-02-15 |
| 5975809 | Apparatus and method for securing soil reinforcing elements to earthen retaining wall components | Thomas P. Taylor | 1999-11-02 |
| 5975810 | Geo-grid anchor | Thomas P. Taylor | 1999-11-02 |
| 5820305 | T-block wall system | Thomas P. Taylor | 1998-10-13 |
| 5749680 | Wire mat connector | Thomas P. Taylor | 1998-05-12 |
| 5733072 | Wirewall with stiffened high wire density face | Thomas P. Taylor | 1998-03-31 |
| 5722799 | Wire earthen retention wall with separate face panel and soil reinforcement elements | — | 1998-03-03 |
| 5702208 | Grid-locked block panel system | Thomas P. Taylor | 1997-12-30 |
| 5492438 | Apparatus and method for retaining wall top panel | — | 1996-02-20 |
| 5484235 | Retaining wall system | Thomas P. Taylor | 1996-01-16 |
| 5076735 | Welded wire component gabions and method of making the same and construction soil reinforced retaining walls therefrom | — | 1991-12-31 |
| 4993879 | Connector for securing soil reinforcing elements to retaining wall panels | — | 1991-02-19 |
| 4992005 | Lifting device and method for retaining wall panels | — | 1991-02-12 |
| 4929125 | Reinforced soil retaining wall and connector therefor | — | 1990-05-29 |
| 4856939 | Method and apparatus for constructing geogrid earthen retaining walls | — | 1989-08-15 |
| 4834584 | Dual swiggle reinforcement system | — | 1989-05-30 |
| 4661023 | Riveted plate connector for retaining wall face panels | — | 1987-04-28 |
| D288616 | Face panel for seawall | — | 1987-03-03 |