>>8478695 (lb)

>>8478782 (lb)

Patent 239B leads to # 3,803,127

…and 3,803,127, patented Apr. 9, 1974 (N-phenylpolymethyleneimines…

https://patents.justia.com/patent/3965105

http://www.freepatentsonline.com/4005093.html

https://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.868.9403&rep=rep1&type=pdf

https://patents.google.com/patent/US4417052

MedFags around? Looks like possibly, the counter, the cure.