LRH is almost but not quite a trademark and service mark owned by Religious Technology Center.
See the relevant trademarks page for details.
If one talks about "LRH Technology", one is using the term in its almost-trademarked sense.
However, if one says, "I once spoke with LRH on the ship", then one is talking about the man and not about the trademark.
See L. Ron Hubbard for information about the man.
See Copyrights and trademarks for information about the other LRH.