Foley first described the use of a self-retaining balloon catheter in 1929, to be used to achieve hemostasis after cystoscopic prostatectomy. He worked on development of this design for use as an indwelling urinary catheter, to provide continuous drainage of the bladder, in the 1930s. His design incorporated an inflatable balloon towards the tip of the tube which could be inflated inside the bladder to retain the catheter without external taping or strapping. He demonstrated this to the American Urologists Society in 1935, and published a paper describing it in 1937. While he was still developing his catheter, a patent was issued to Paul Raiche of the Davol Rubber Company of Providence, Rhode Island in 1936. Four months later, in October 1936, Foley applied for the patent, and was awarded this after appearing before the patent office Board of Appeals. Raiche appealed this decision in court, and it was overturned, returning the patent to Raiche. A further request for a hearing made by Foley was refused, and so the patent stayed with Raiche.
https://en.wikipedia.org/wiki/Frederic_Foley
According to this paragraph, did Frederic Foley hold the patent to the Foley catheter?
According to this paragraph, Frederic Foley applied for the patent but it was ultimately awarded to Paul Riache instead.