HS

Harusige Sugawara

MI Mitsui Toatsu Chemicals, Incorporated: 2 patents #607 of 1,543Top 40%
Overall (All Time): #2,312,337 of 4,157,543Top 60%
2
Patents All Time

Issued Patents All Time

Showing 1–2 of 2 patents

Patent #TitleCo-InventorsDate
5157130 Method of preventing discoloring of maleic anhydride Takasi Ohkawa 1992-10-20
5026876 Process for producing maleic anhydride Takasi Okawa 1991-06-25