US Patent Issued to PROPRIETECT on Nov. 4 for "Isocyanate-based polymer foam having improved flame retardant properties" (Canadian Inventors)

ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,460,040, issued on Nov. 4, was assigned to PROPRIETECT LP (Toronto).

"Isocyanate-based polymer foam having improved flame retardant properties" was invented by Herbert Schmidt (Richmond Hill, Canada), George Ng (Markham, Canada), Le Tang (Richmond Hill, Canada), Petar Pepic (Toronto) and Dorota Ulman (Mississauga, Canada).

According to the abstract* released by the U.S. Patent & Trademark Office: "There is described an isocyanate-based polymer foam having a V-0 rating according to Underwriters' Laboratories Standard 94 Flammability Test after aging of separate samples of the foam (i) for 168 hours at 150deg C., and (ii) for 600 hours at 120deg C. The foam may be in the form of a molde...