HC Deb 26 March 1984 vol 57 c91W
Mr. Kirkwood

asked the Secretary of State for Defence how many firms in the United Kingdom have the patents for the manufacturing of components necessary for the manufacture of nerve gas.

Mr. Lee

Components used in the manufacture of nerve agents would also be used in various other industrial processes and these involve numerous companies. We are not therefore able to identify any particular patents which protect components of nerve gas.