1081
He had several patents issued in his name from the U.S. Patent and Trademark Office , all of which involve a method of tensioning drumheads , in June 2002 – November 2004 .
 organization: U.S. Patent and Trademark Office
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 organization: U.S. Patent and Trademark Office