I suspected you might bring him up:
1. He didn't invent it, IMO. i prefer the term 'contributed towards'
2. Even if he did it was under British India. In Civ IV terms: the Brits pop a GS in British Bengal, and then use it to lightbulb Radio.
Well if India didn't exist then then it is silly to argue that they didn't invent things.

That also furthers the argument that colonizers should be buffed