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| US4129091 | 9 Jan 1978 | 12 Dec 1978 | | Impregnation apparatus having bias-opening means |
| US4129668 | 8 Apr 1977 | 12 Dec 1978 | Bertin & Cie | Method of draining parts emerging from hot galvanizing baths |
| US4156043 | 30 Aug 1978 | 22 May 1979 | | Impregnation of fluid-permeable bodies |
| US4210095 | 11 Dec 1978 | 1 Jul 1980 | Bertin & Cie | Machine for draining parts emerging from hot galvanizing baths |
| US4455326 | 22 Apr 1983 | 19 Jun 1984 | Northern Telecom Limited | Fluidized power filling of cable core units |
| US4728533 | 30 Sep 1982 | 1 Mar 1988 | Engelhard Corporation | Process for forming integral edge seals in porous gas distribution plates utilizing a vibratory means |
| US4779563 | 20 Nov 1986 | 25 Oct 1988 | Agency of Industrial Science & Technology | Ultrasonic wave vibration apparatus for use in producing preform wire, sheet or tape for a fiber reinforced metal composite |
| US4827866 | 22 Apr 1988 | 9 May 1989 | Northrop Corporation | Method and apparatus for treating an article in a heated environment |
| US5288521 | 20 Feb 1992 | 22 Feb 1994 | | Process and apparatus for the impregnation of workpieces of porous material |
