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| US6228454 | 13 May 1998 | 8 May 2001 | Fort James Corporation | Sheet material having weakness zones and a system for dispensing the material |
| US6321963 | 2 Feb 1998 | 27 Nov 2001 | Fort James Corporation | Sheet material dispensing apparatus and method |
| US6412678 | 27 Abr 2001 | 2 Jul 2002 | Fort James Corporation | Sheet material dispensing apparatus and method |
| US6447864 | 19 Dic 2000 | 10 Sep 2002 | Fort James Corporation | Sheet material having weakness zones and a system for dispensing the material |
| US6464120 | 12 Oct 2000 | 15 Oct 2002 | Fort James Corporation | Sheet material having weakness zones and a system for dispensing the material |
| US6536624 | 9 Abr 2002 | 25 Mar 2003 | Fort James Corporation | Sheet material having weakness zones and a system for dispensing the material |
| US6685074 | 21 Feb 2002 | 3 Feb 2004 | Fort James Corporation | Sheet material dispensing apparatus and method |