Mitsui Toatsu Chemicals, Incorporated
1,376Patents
0Active
1,376Granted
46Portfolio score
Filing activity: Jul 21, 1970 → Jun 11, 2003
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5406124A | Insulating adhesive tape, and lead frame and semiconductor device employing the tape | Emerging Cross-Sectional Technologies | 252 | Expired |
| US5639990A | Solid printed substrate and electronic circuit package using the same | Emerging Cross-Sectional Technologies | 238 | Expired |
| US4548617A | Abrasive and method for manufacturing the same | Chemistry; Metallurgy | 118 | Expired |
| US5266746A | Flexible printed circuit board having a metal substrate | Electricity | 117 | Expired |
| US4959104A | Self-hardenable material | Chemistry; Metallurgy | 116 | Expired |
| US4718425A | Catheter with pressure sensor | Human Necessities | 110 | Expired |
| US5049645A | Preparation method of amino resin particulate having narrow particle size distribution | Chemistry; Metallurgy | 100 | Expired |
| US5463229A | Circuit board for optical devices | Electricity | 91 | Expired |
| US5677236A | Process for forming a thin microcrystalline silicon semiconductor film | Emerging Cross-Sectional Technologies | 90 | Expired |
| US4814124A | Preparation of gas permeable porous film | Emerging Cross-Sectional Technologies | 89 | Expired |
| US4933158A | Method for purifying nitrogen trifluoride gas | Chemistry; Metallurgy | 89 | Expired |
| US4542201A | Resin for high-refractivity lenses and lenses made of same resin | Chemistry; Metallurgy | 88 | Expired |
| US4828710A | Method for the extraction of water from macromolecular solutions | Chemistry; Metallurgy | 82 | Expired |
| US5194398A | Semiconductor film and process for its production | Emerging Cross-Sectional Technologies | 79 | Expired |
| US4585671A | Formation process of amorphous silicon film | Emerging Cross-Sectional Technologies | 78 | Expired |
| US5387665A | Resins for electrohotographic toners | Physics | 77 | Expired |
| US5310865A | Polyhydroxycarboxylic acid and preparation process thereof | Chemistry; Metallurgy | 74 | Expired |
| US5656371A | Insulating composition and formed article thereof | Emerging Cross-Sectional Technologies | 73 | Expired |
| US5241106A | Process for producing ethyl acetate | Chemistry; Metallurgy | 71 | Expired |
| US4375566A | Process for producing ortho-alkylated phenols from anisoles | Chemistry; Metallurgy | 71 | Expired |
| US4775733A | High-refractivity plastic lens resin formed by reacting at least one polyisocyanate with at least one polythiol | Chemistry; Metallurgy | 70 | Expired |
| US5753730A | Plastic lenses having a high-refractive index, process for the preparation thereof and casting polymerization process for preparing sulfur-containing urethane resin lens and lens prepared thereby | Physics | 69 | Expired |
| US5693738A | Composition for urethane-base plastic lens, urethane-base plastic lens obtained from the composition, and process for the production of the plastic lens | Physics | 66 | Expired |
| US5374668A | Casting epoxy resin, polythiol and releasing agent to form lens | Physics | 64 | Expired |
| US4707425A | Optical recording method and media therefor | Emerging Cross-Sectional Technologies | 62 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.