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| Number | Title | Issue Date |
| 4665254 | AMS-1B crystalline borosilicate molecular sieve-based catalyst compositions and process for xylene methylation Disclosed are improved HAMS-1B crystalline molecular sieve-based catalyst compositions made by impregnating such a sieve, which has been incorporated in an inorganic matrix, with a small amount of a magnesium compound, and a process for employing such cat... | 05/12/1987 |
| 4552214 | Pulsed in situ retorting in an array of oil shale retorts Greater product yield and quality and continuous upgrading of shale oil with hydrogen-rich, purge mode off gases is attained by pulsing in situ retorts at different phases and intervals. In the process, flow of feed gases to the flame fronts of undergroun... | 11/12/1985 |
