Yoshitake Ishii
16Patents
4h-index
24Co-inventors
56Inventor score
Filing activity: Mar 11, 1997 → Sep 3, 2013
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6149197A | Structure of front body of automobiles | Performing Operations; Transporting | 8 | Expired |
| US6713648B2 | Method for absorbing acrylic acid and method for purifying acrylic acid | Chemistry; Metallurgy | 5 | Expired |
| US5857687A | Bump stop seat structure | Performing Operations; Transporting | 5 | Expired |
| US6888025B2 | Method for absorbing acrylic acid and method for purifying acrylic acid | Chemistry; Metallurgy | 4 | Expired |
| US7048834B2 | Method for purification of acrylic acid | Chemistry; Metallurgy | 2 | Expired |
| US8680331B2 | Process for production of (meth)acrylic acid | Chemistry; Metallurgy | 1 | Active |
| US8680330B2 | Process for producing (meth) acrylic acid | Chemistry; Metallurgy | 1 | Active |
| US7381839B2 | Method for producing acrylic acid | Chemistry; Metallurgy | 1 | Active |
| US8859809B2 | Device and process for crystallizing (meth)acrylic acid | Chemistry; Metallurgy | 1 | Active |
| US9029599B2 | Process for producing (meth)acrylic acid | Chemistry; Metallurgy | 0 | Active |
| US9320822B2 | Polyacrylic acid (salt) water-absorbing resin and manufacturing method therefor | Chemistry; Metallurgy | 0 | Active |
| US7514581B2 | Method for purifying and producing acrylic acid | Chemistry; Metallurgy | 0 | Active |
| US8530699B2 | Process for production of (meth) acrylic acid | Chemistry; Metallurgy | 0 | Active |
| US6960670B2 | Method for production of maleic anhydride | Chemistry; Metallurgy | 0 | Expired |
| US8704000B2 | Method for crystallizing (meth)acrylic acid and method for regulating content of polymerization inhibitor in product (meth)acrylic acid | Chemistry; Metallurgy | 0 | Active |
| US8846977B2 | Crystallization unit for acrylic acid and method for crystallization of acrylic acid using the same | Chemistry; Metallurgy | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.