Kerry King of Surge Marine on Wesport Island, Maine, has been making sea kayaks via resin infusion since the early '90's. I got mine in 1996. My custom hull is infused carbon fiber with gold flecks mixed into a clear gel coat. The deck is infused Kevlar. It's 17'-2" long and weighs 36 pounds. You can stand and jump on the deck it is so strong.
Several canoe manufacturers now use resin infusion, including Placid and Swift. Perhaps Lincoln Canoe in Maine was the first.
My personal opinion is that very experienced hand laminators such as Dave Curtis can come close to matching an infused canoe hull's resin weight. However, infused gunwales and thwarts add an additional weight saving versus wood or aluminum trim.