As an inventor and engineer, Carvalko has been awarded eighteen U.S. patents in various fields, including computer technology, biomedical, fuel purification, and financial systems.

[16][17][18][19][20] According to Google Scholar Carvalko's patents, and his articles, books on science, technology, and law have been cited over 1384 times, garnering an h-index of 14 and an i10-index rating of 15.

[29] The trial resulted in a Federal District Court judgment, which was the first of its kind to order the Army to change the classification of a soldier from Missing in Action to a Prisoners of War.

[31] In 2005, a documentary recounting the trial and congressional hearing, entitled Missing, Presumed Dead: The Search For America's POWs, featured actor Ed Asner as narrator, Carvalko, as the lawyer who tried the case among others.

[32][33] Carvalko's inventions deal with a range of technologies used in copiers, medical arts, fuel filtering and artificial intelligence as it relates to remote sensing for smart buildings and vehicles.

[37] Carvalko has also produced works in the creative writing genres of novels and poetry, where he frequently returns to historical, cultural and dystopian themes.

We Were Beautiful Once, Chapters from a Cold War, is a novel inspired by his involvement in revealing that the US government abandoned POWs in North Korea following the cessation of hostilities in 1953.