Ingersoll Rand or Ingersoll-Rand?

Whenever I'm unsure how to spell or punctuate a company's name, one of my first ports of call (after checking our house style guide) is the company's own website. After all, if I write the name how the company itself writes it, I can't go far wrong – can I?

Recently, however, I have been frustrated with (and by!) companies that use their own names inconsistently. Take this screengrab from Ingersoll Rand's website:


So is it Ingersoll Rand or Ingersoll-Rand? The former, not that you would know that from the corporate website.

I wonder whether Ingersoll-Rand is hyphenated in the above example because the writer is treating it as a compound adjective? Not common practice with company names!