Is minute a common noun

Yes, the noun minute is a common noun.

A proper noun is the name of a specific person, place, thing, or a title; for example:

• Minute Street, North Andover, MA or Minute Road, Harrisburg, PA
• Minute Rice, product of Riviana Foods Inc.
• Minute Maid Orange Juice
• "One Minute to Zero", 1952 movie with Robert Mitchum and Ann Blyth