Tokuyama Soda Kabushiki Kaisha
100Patents
0Active
100Granted
43Portfolio score
Filing activity: Jan 7, 1971 → Mar 8, 1994
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4369298A | Novel cured resin, process for production thereof, and lens composed of said resin from bis(alkyleneoxyphenyl)-diacrylate, bis(alkyleneoxyphenyl)diallyl ether, bis(alkyleneoxyphenyl)diallyl carbonate monomers | Chemistry; Metallurgy | 103 | Expired |
| US5092888A | Hardening material | Chemistry; Metallurgy | 84 | Expired |
| US4788043A | Process for washing semiconductor substrate with organic solvent | Emerging Cross-Sectional Technologies | 81 | Expired |
| US4791144A | Microporous film and process for production thereof | Chemistry; Metallurgy | 73 | Expired |
| US5238735A | Microporous shaped article and process for preparation thereof | Emerging Cross-Sectional Technologies | 65 | Expired |
| US4613643A | Porous sheet | Emerging Cross-Sectional Technologies | 62 | Expired |
| US4426176A | L-Shaped concrete block and method for constructing a retaining wall by such L-shaped concrete blocks | Fixed Constructions | 60 | Expired |
| US4101395A | Cathode-structure for electrolysis | Chemistry; Metallurgy | 59 | Expired |
| US5106998A | Photochromic compound, composition and use thereof | Chemistry; Metallurgy | 55 | Expired |
| US4618592A | Fine powder of aluminum nitride, composition and sintered body thereof and processes for their production | Chemistry; Metallurgy | 52 | Expired |
| US4567030A | Amorphous, spherical inorganic compound and process for preparation thereof | Chemistry; Metallurgy | 49 | Expired |
| US5130058A | Photochromic compound, process for production thereof, use thereof and composition containing said photochromic compound | Chemistry; Metallurgy | 49 | Expired |
| US4279883A | Process for producing hydrogen peroxide | Performing Operations; Transporting | 43 | Expired |
| US4009252A | Process for preparing hydrogen peroxide | Chemistry; Metallurgy | 43 | Expired |
| US4169023A | Electrolytic diaphragms, and method of electrolysis using the same | Chemistry; Metallurgy | 40 | Expired |
| US4764497A | Amorphous, spherical inorganic compound and process for preparation thereof | Chemistry; Metallurgy | 37 | Expired |
| US4918136A | Adhesive composition | Chemistry; Metallurgy | 35 | Expired |
| US5349065A | Photochromic compound | Chemistry; Metallurgy | 34 | Expired |
| US4642298A | Composite nitride sintered body | Chemistry; Metallurgy | 32 | Expired |
| US4843021A | Immunological assay method | Emerging Cross-Sectional Technologies | 32 | Expired |
| US4877854A | Curable composition | Chemistry; Metallurgy | 32 | Expired |
| US4882438A | Photochromatic compounds | Emerging Cross-Sectional Technologies | 29 | Expired |
| US5063183A | Sinterable aluminum nitride composition, sintered body from this composition and process for producing the sintered body | Chemistry; Metallurgy | 27 | Expired |
| US4755620A | Acrylate compound and composition containing the same | Human Necessities | 27 | Expired |
| US3953565A | Process for producing flame-retardant shaped articles of thermoplastic synthetic resins | Chemistry; Metallurgy | 26 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.