Patent filings in both conventional and emerging assistive technology are highly concentrated on mobility, hearing and vision.
pˈæʔn̩t fˈaɪlɪŋz ɪn bˈoʊθ kənvˈɛnʃənəl ænd ɪmˈɜːdʒɪŋ ɐsˈɪstɪv tɛknˈɑːlədʒi ɑːɹ hˈaɪli kˈɑːnsəntɹˌeɪɾᵻd ˌɔn moʊbˈɪlᵻɾi, hˈɪɹɪŋ ænd vˈɪʒən.