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| US3960823 | 18 Abr 1974 | 1 Jun 1976 | Nippon Zeon Co., Ltd. | Hydrocarbon resins and compositions thereof |
| US3987123 | 27 Feb 1975 | 19 Oct 1976 | Exxon Research and Engineering Company | Petroleum resins |
| US4068062 | 16 Jul 1976 | 10 Ene 1978 | Exxon Research and Engineering Company | Polymerizing C.sub.5 and C.sub.6 olefins and diolefins with 3.degree. hydrocarbyl halide to produce narrow molecular weight petroleum resins having low softening points |
| US4072808 | 29 Dic 1976 | 7 Feb 1978 | Gulf Research & Development Company | Process for preparing elastomers for pressure-sensitive adhesive application |
| US4078132 | 9 Ago 1976 | 7 Mar 1978 | | "Process for preparing petroleum resins having low softening points and narrow molecular weight ranges" |
| US4156762 | 22 May 1978 | 29 May 1979 | Sumitomo Chemical Company, Limited | Process for producing light-colored clear petroleum resins |
| US4187362 | 2 Abr 1976 | 5 Feb 1980 | Imperial Chemical Industries Limited | Synthetic resins derived from petroleum |
| US4250272 | 11 May 1979 | 10 Feb 1981 | Shell Oil Company | Adhesive compositions |
| US4342850 | 27 Oct 1980 | 3 Ago 1982 | Eastman Kodak Company | Process for the preparation of hydrocarbon resins |
| US4419503 | 24 May 1982 | 6 Dic 1983 | Exxon Research & Engineering Co. | Catalytic process for the production of petroleum resins |
| US4870146 | 30 Jun 1988 | 26 Sep 1989 | Tosoh Corporation | Process for producing a light color high softening point hydrocarbon resin |
