Let's say i've made a new product for repelling lice and wish to patent it. Let's imagine that the active ingredient of this lice repelling product is ethanol. Ethanol is a member of the alcohol family which has other members such as Methanol, Propanol, Butanol and so on.
These substances share many similar characteristics with ethanol such as toxicity, solubility and flammability. Because of this there is a slight chance that some of these other alcohols could also be used in a product for repelling lice.
If that's the case then a competitor could potentially bring a similar lice repelling product to the market that is based on Methanol or Propanol instead and he would not be infringing on my patent.
To prevent this from happening I would want to file for a patent that gives me the exclusive right to not only use ethanol as the active ingredient but also any other alcohol that has similar lice-repelling characteristics as ethanol. Only ethanol would be used in the final product however. The other alcohols would merely be included in the patent to prevent someone else from creating a similar product using one of the other alcohols.
Would filing for a patent like that be allowed?