Some UK 1980s STOVL fighter patents have cropped up here and on other forums. Thought a summary with additions might be useful:
P.1175, late 1960s. Kingston Harrier development with twin nozzle Pegasus and lift jet
http://www.google.com/patents?vid=USPAT3622104
AV-16S6/P.1185, Kingston study for US Navy mid 1970s, patent showing this project
http://www.google.com/patents?vid=USPAT4004755
BAe P.109 - studied early to mid 1980s at BAe Warton, using two nozzle Pegasus (like P.1175) type engine. Transonic.
http://www.google.com/patents?vid=USPAT4478377
P.112 (BAe Warton, see Buttler British Secret Fighters), and P.116 ejector lift, propulsion arrangement
http://www.google.com/patents?vid=USPAT5271222
P.112 also proposed with an 'inflatable' duct
http://www.google.com/patents?vid=USPAT4533095
BAe P.115 - studied mid 1980s at Warton and Kingston, using tandem fan engine. EFA-type performance
http://www.google.com/patents?vid=USPAT5042746
BAe P.1218 - studied 1981 by BAe Kingston team based at St Louis alongside McDonnell Douglas team. Was a combination of the P.1216 concept with the twin-engine MDC 279-4
http://www.google.com/patents?vid=USPAT4343446
For related patents follow the links, or google some of the names/organisations plus STOVL etc. Turns up things such as:
http://www.google.com/patents?vid=USPAT5465923 ?????!!!!!!!!
