Yep, they went all out on that one...the animation was superb, and it ran 14 minutes, twice the norm....I guess Disney lit a fire under King?
King Features owns the trademark/character "Popeye." They did not produce the theatrical cartoons. *
Fleischer Studios produced the "Popeye" cartoons of 1933 - 1942, distributed thru Paramount. Paramount bought out Fleischer in 1942, and produced the toons under its Famous Studios brand until 1957.
Fleischer is highly regarded for making technical advances in animated films, and lit as many fires under Disney, as Disney did to Fleischer.
* King produced the 1960-1961 made-for-TV limited animation cartoons, but the actual films were created by sub-contracting out to several independent production houses, including Gene Deitch in Europe and Larry Harmon in L.A.