|
| US3955570 | 17 May 1974 | 11 May 1976 | Physical Systems, Inc. | Surgical exhaust mask |
| US3990112 | 2 May 1975 | 9 Nov 1976 | Codman & Shurtleff, Inc. | Protective garment |
| US4741333 | 30 Ene 1987 | 3 May 1988 | Shimizu Construction Co., Ltd. | Dust-free garment |
| US4848330 | 5 Ene 1988 | 18 Jul 1989 | | Respirator system |
| US4895172 | 4 Jun 1987 | 23 Ene 1990 | | Gas collection device |
| US4901716 | 6 Feb 1989 | 20 Feb 1990 | | Clean room helmet system |
| US5005216 | 30 Jul 1990 | 9 Abr 1991 | Abandaco, Inc. | Self-ventilating protective garment |
| US5048516 | 13 Feb 1990 | 17 Sep 1991 | | Respiratory mask |
| US5133344 | 3 Jun 1991 | 28 Jul 1992 | Environmental Safety First Industries, Inc. | Inflatable protective hood |
| US5253642 | 25 Mar 1992 | 19 Oct 1993 | Stackhouse, Inc. | Surgical gown |
| US5588153 | 28 Abr 1995 | 31 Dic 1996 | Stackhouse, Inc. | Surgical gown |
| US6076571 | 27 Ene 1999 | 20 Jun 2000 | | Passthrough assemblies for a chemical protective suit |
| US6349721 | 4 Oct 1999 | 26 Feb 2002 | Morning Pride Manufacturing, L.L.C. | Protective cover for air filter and for conduit connecting air filter to breathing mask |
| US6481019 | 18 Ene 2001 | 19 Nov 2002 | Stryker Instruments | Air filtration system including a helmet assembly |
| US6622311 | 2 Jul 2002 | 23 Sep 2003 | Stryker Instruments | Air filtration system including a helmet assembly |
| US6973677 | 9 Dic 2004 | 13 Dic 2005 | Stryker Instruments | Air filtration system including a helmet assembly |
| US6990691 | 18 Jul 2003 | 31 Ene 2006 | DePuy Products, Inc. | Head gear apparatus |
| US7200873 | 29 Dic 2005 | 10 Abr 2007 | DePuy Products, Inc. | Head gear apparatus having improved air flow arrangement |
| US7752682 | 24 Mar 2006 | 13 Jul 2010 | Stryker Corporation | Personal protection system including a helmet and a hood, the helmet including a ventilation system that blows air on the neck of the wearer |
| US7937775 | 8 Ago 2006 | 10 May 2011 | Microtek Medical, Inc. | Surgical protective head gear assembly including high volume air delivery system |
| US7937779 | 20 Feb 2007 | 10 May 2011 | DePuy Products | Head gear apparatus having improved air flow arrangement |
| US8020552 | 26 Feb 2007 | 20 Sep 2011 | Microtek Medical, Inc. | Helmets and methods of making and using the same |
| US8234722 | 14 Dic 2007 | 7 Ago 2012 | Stryker Corporation | Personal protection system with head unit having easy access controls and protective covering having glare avoiding face shield |
| USH805 | 18 Sep -11 | | The United States of America as represented by the Secretary of the Army | Exhalation duct |