The name TKC was derived from Tuboscope – Ken Carstensen. Tuboscope being the proponent and Ken Carstensen being the inventor and Patent holder.
The first testing done on the TKC 8rd tubing connection was performed by Harry Sweet & Associates. Since then, numerous successful API testing for premium connections has been performed on the TKC EUE, NU and FCR connections.
In 1992, Tuboscope transferred all of the TKC assets and the worldwide rights for the use of the TKC product line to TD International. TD International sold the rights for the TKC connections to ThreadMasters, Inc. retaining on an exclusive basis, the Far East and Middle East territories as listed below.