John Quincy St. Clair

John Quincy St. Clair, Jr. (May 21, 1945 - September 13, 2021) was an American inventor who filed multiple patents between 2002 and 2005 with the United States Patent and Trademark Office (USPTO), including many spacecraft designs, generators, and other systems of unusual character, which were published but ultimately classified as abandoned due to failure to respond to USPTO follow-up paperwork.

Patent Applications
Of note, St. Clair's address on many of his patents was the Hyperspace Research Institute in San Juan, Puerto Rico.