Dow components reporting earnings this week (NYSE: DD) (NYSE: MMM) (NYSE: PG) (NYSE: MRK)

DuPont is reporting with expectations of $0.34 per share on revenue of $6.67 billion. The company reports on October 26, 2010.

Procter & Gamble Co. reports on Wednesday. Analysts expect earnings of $1.00 on revenue of $20.25 billion.

3M reports Thursday with expected earnings of $1.51 per share on revenue of $6.83 billion.

Merck, the pharmaceutical bell weather, reports Friday with expected earnings of $0.82 per share and expected revenue of $11.23 billion.