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| Number | Title | Issue Date |
| 5258334 | Process of preventing visual access to a semiconductor device by applying an opaque ceramic coating to integrated circuit devices Reverse engineering of integrated circuit devices is prevented by denying visual access to the topology of an integrated circuit device. Visual access is denied by coating the device with an opaque ceramic. The opaque ceramic is produced by first mixing o... | 11/02/1993 |
| 4972105 | Programmable configurable logic memory A reprogrammable logic array is characterized by the use of a RAM fuse to selectively control the transfer of variable from input lines to intersecting output combination lines of the array. The configuration of the combiner array is programmed by writing... | 11/20/1990 |
