Your right about that, except there is more then one kind of pulp. There was the 20-40s pulp, more along the Dashiell Hammett range (the first indiana jones movie is a great example of modern interpretation of this pulp). There was a "pulp" of the late 40's and 50's which Conan is a great example. The 4th Indiana Jones movie was a good modern example of this type of pulp.

Although when you just say pulp, yea, you are usually referring to the 20s through 40s stuff.

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I didn't say it wasn't pulp, only that pulp was dwindling by that time period. By the time you get through WW2 only the bigger magazines remained, a lot of what was left moved to slick or digest format. By the time you get into the 50's the rise of paperbacks took up most of the slack in popular genre fiction, so it's mostly specialized material like the Sci-Fi mags, which by the end of the decade had almost entirely ceased to be pulp proper.

For the magazine absolutely, but pulp as a genre was kept alive by the pulp novel with the decline of the magazine. But these books are still generally considered pulp genre (I believe they are differentiated by pulp magazine and pulp literature). I found this somewhere:

"Many of the paperback houses that contributed to the decline of the genre–Ace, Dell, Avon, among others–were actually started by pulp magazine publishers. They had the presses, the expertise, and the newsstand distribution networks which made the success of the mass-market paperback possible. These pulp-oriented paperback houses mined the old magazines for reprints. This kept pulp literature, if not pulp magazines, alive."

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No debate there, paperbacks kept pulp alive, and are largely what we owe the current state of genre fiction and even our current pulp renaissance. But I still maintain that pulp never recovered from WW2, and that the golden age of pulp ended at that same time. After all we went from having dozens of different magazines being published at a time, to just a handful, most of which didn't last very long.