US Patent Issued to PETROLEO BRASILEIRO S.A.-PETROBRAS, UNIVERSIDADE FEDERAL DE ITAJUBA-UNIFEI on Nov. 11 for "Multi-diameter cleaning pig" (Brazilian Inventors)

ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,467,576, issued on Nov. 11, was assigned to PETROLEO BRASILEIRO S.A.-PETROBRAS (Rio de Janeiro, Brazil) and UNIVERSIDADE FEDERAL DE ITAJUBA-UNIFEI (Itajuba, Brazil).

"Multi-diameter cleaning pig" was invented by Marcelo Da Cruz Rodrigues (Rio de Janeiro, Brazil), Eduardo Teixeira Da Silva (Rio de Janeiro, Brazil), Andre Luiz Guedes Maricato (Rio de Janeiro, Brazil), Volney Soares Lopes (Rio de Janeiro, Brazil), Ricardo Risso Chaves (Itajuba, Brazil), Marcos Aurelio De Souza (Itajuba, Brazil) and Marcelo Tai Jr. (Itajuba, Brazil).

According to the abstract* released by the U.S. Patent & Trademark Office: "The present invention discloses a pig with improvement in the suspension and cen...