|
| US4095236 | 11 Mar 1977 | 13 Jun 1978 | A. B. Dick Company | Electronic stencil engraving machine stylus and support |
| US4373608 | 20 Dic 1979 | 15 Feb 1983 | General Electric Company | Tuned sound barriers |
| US4425981 | 17 Nov 1981 | 17 Ene 1984 | Fraunhofer-Gesellschaft Zur Forderung der Angewandten Forschung e.V. | Sound absorbing building component of synthetic resin sheeting |
| US4976334 | 5 Dic 1989 | 11 Dic 1990 | Bombardier, Inc. | Noise reducing tool and method |
| US5240221 | 28 Jun 1991 | 31 Ago 1993 | Delta Tech Research, Inc. | Viscoelastic damping system |
| US5583324 | 21 Jun 1994 | 10 Dic 1996 | Tekna Sonic, Inc. | Vibration damping device |
| US5691516 | 19 Jul 1996 | 25 Nov 1997 | Tekna Sonic, Inc. | Tunable vibration absorber |
| US7395898 | 5 Mar 2004 | 8 Jul 2008 | RSM Technologies Limited | Sound attenuating structures |
| US7681689 | 2 Sep 2003 | 23 Mar 2010 | Komatsu Ltd. | Vibration damping device and bucket for construction machine |
| US7743881 | 21 Feb 2008 | 29 Jun 2010 | Komatsu Ltd. | Vibration damping device and bucket for construction machine |
| US7789194 | 20 Abr 2007 | 7 Sep 2010 | Cardinal Health 212, Inc. | Acoustic attenuation chamber |
| US7925392 | 8 Abr 2008 | 12 Abr 2011 | LORD Corporation | Aircraft vehicular propulsion system monitoring device and method |
| US8011472 | 28 Ene 2009 | 6 Sep 2011 | Yamaha Corporation | Sound absorbing structure and vehicle component having sound absorbing property |
| US8025124 | 31 Oct 2008 | 27 Sep 2011 | E. I. du Pont de Nemours and Company | Broadband passive distributed tuned vibration and acoustic absorber for modally dense structures |
| US8172036 | 10 Sep 2010 | 8 May 2012 | The Boeing Company | Apparatus and method for providing acoustic metamaterial |