With his team facing elimination in Game 4, Franzen netted three consecutive goals in a span of 3:27 during the first period.
Franzen recorded his first at 7:50 into the game by knocking in a loose puck from the edge of the crease. He padded the lead with a blast into the far right corner at 10:43, then capped the natural hat trick just 33 seconds later.
Officials originally credited Franzen with the first goal, but the scoring changed during the first intermission. Todd Bertuzzi registered the opening tally. Franzen picked up an assist on the goal. The winger also assisted on Brian Rafalski's power play tally in the second, and scored his fourth of the game 7:33 into the third.
Had the first tally stood, Franzen would have tied an NHL record for most goals in a playoff game. Only Montreal's Newsy Lalonde and Maurice Richard, Toronto's Darryl Sittler, Philadelphia's Reggie Leach and Pittsburgh's Mario Lemieux have scored five times in a postseason contest.
Only two players scored four goals in a period in NHL history: Tim Kerr in 1987 and Lemieux in 1989. Three of Kerr's goals came in a record span of 3:24. Franzen came within seconds of matching the feat.
With the effort, Franzen became the 13th player in playoff history to record four points in a period.
The Swede entered Thursday's contest with a 10-goal point streak (two goals, nine assists) In his last 49 games prior to Game 4, Franzen netted 52 points (27 goals, 25 assists) and a plus-25 rating.
The San Jose Sharks lead the series 3-0.