|
| US3998921 | 11 Dic 1973 | 21 Dic 1976 | Bayer Aktiengesellschaft | Process for production of polyester threads |
| US4026973 | 1 Ago 1975 | 31 May 1977 | Teijin Limited | Process for preparing heat-resistant aromatic polyester filaments |
| US4134882 | 2 Jun 1977 | 16 Ene 1979 | E. I. Du Pont De Nemours and Company | Poly(ethylene terephthalate)filaments |
| US4155889 | 10 Abr 1978 | 22 May 1979 | Eastman Kodak Company | Process for substantially increasing the flexibility of a polyester |
| US4156071 | 5 Jun 1978 | 22 May 1979 | E. I. Du Pont de Nemours and Company | Poly(ethylene terephthalate) flat yarns and tows |
| US4195051 | 5 Oct 1978 | 25 Mar 1980 | E. I. Du Pont de Nemours and Company | Process for preparing new polyester filaments |
| US4451422 | 28 Abr 1982 | 29 May 1984 | Sekisui Jushi Kabushiki Kaisha | Method for producing polyethylene terephthalate packing material |
| US4500278 | 22 Abr 1983 | 19 Feb 1985 | E. I. Du Pont de Nemours and Company | Yarn heat treatment apparatus |
| US4639347 | 16 Mar 1984 | 27 Ene 1987 | E. I. Du Pont de Nemours and Company | Process of making crimped, annealed polyester filaments |
| US4704329 | 17 Dic 1986 | 3 Nov 1987 | E. I. Du Pont de Nemours and Company | Annealed polyester filaments and a process for making them |
| US4970038 | 29 Nov 1988 | 13 Nov 1990 | BASF Corporation | Process of preparing polyester yarn |
| US5066439 | 27 Mar 1990 | 19 Nov 1991 | Unitika Limited | Method of making polyester fibers |
| US5287634 | 3 Jun 1993 | 22 Feb 1994 | United States Surgical Corporation | Removal of vaporizable components from polymeric products |
| US5294389 | 26 Abr 1993 | 15 Mar 1994 | United States Surgical Corporation | Dynamic treatment of suture strand |
| US5871502 | 8 Abr 1996 | 16 Feb 1999 | Ethicon, Inc. | Process for manufacturing a polypropylene monofilament suture |