CESSNA 550 CITATION ENCOUNTERS WAKE TURB FROM BOEING 767.

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WE WERE LEVEL AT FL330 ON J110 EBOUND. A B767 WAS BEHIND AND BELOW US. AFTER OVERTAKING US THE B767 WAS CLBED THROUGH OUR ALT TO; I ASSUME; FL370. WE ENCOUNTERED THEIR WAKE SHORTLY AFTER THEY CLBED THROUGH OUR ALT. THE ACFT ROLLED VIOLENTLY TO THE L AT 30-45 DEGS AND THEN TO THE R AND THE AUTOPLT DISENGAGED. I REGAINED CTL MANUALLY AND MADE A TURN 20 DEGS TO THE R TO AVOID ANY FURTHER OCCURRENCES. I IMMEDIATELY MADE A COMPLAINT TO ATC. THEY APPROVED MY TURN OFF COURSE. THE CTLR THEN SAID WE WERE 6 MI IN-TRAIL AT THE TIME OF THE OCCURRENCES. THERE WERE NO INJURIES NOR MECHANICAL MALFUNCTIONS. AUTOPLT RE- ENGAGED NORMALLY. IN THE FUTURE I WILL BE MORE OBSERVANT OF OTHER ACFT THAT ARE CLBED THROUGH MY ALTS. ALSO; I DON'T REMEMBER ATC ISSUING WAKE TURB WARNING. ALSO; MOST WAKE TURB LESSONS AND PUBS CONCENTRATE ON WAKE TURB OCCURRENCES DURING THE TKOF AND APCH PHASES OF FLT AND VERY LITTLE CONCERNS ANY WAKE TURB IN CRUISE FLT. INCREASED ATTN ABOUT WAKE TURB IN CRUISE WOULD BE HELPFUL. CALLBACK CONVERSATION WITH RPTR REVEALED THE FOLLOWING INFO: THE RPTR STATED THE AUTOPLT WAS ENGAGED PRIOR TO THE ENCOUNTER. THE FORCE OF THE WAKE CAUSED THE AUTOPLT TO DISCONNECT. THE PLT GRABBED THE YOKE AND GUIDED THE ACFT AWAY FROM THE WAKE. ALSO; IN THIS CASE THE ACFT AHEAD WAS CLBING THROUGH THE ALT AND NOT MAINTAINING THE SAME OR SIMILAR TRAJECTORY THE RPTR ACFT WAS FLYING; SO THE RPTR WAS XING THE WAKE AND NOT FLYING ALONG IT.