Arakawa Kagaku Kogyo Kabushiki Kaisha
34Patents
0Active
34Granted
36Portfolio score
Filing activity: Jun 11, 1979 → Oct 21, 1997
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4587308A | Method for producing improved water-absorbent resins | Chemistry; Metallurgy | 151 | Expired |
| US4758617A | Process for preparing water-absorbing resin | Chemistry; Metallurgy | 40 | Expired |
| US4863825A | Low temperature electrophotographic toner composition comprising nonlinear polyester resin | Emerging Cross-Sectional Technologies | 35 | Expired |
| US4302371A | Stabilized rosin ester and pressure-sensitive adhesive and hot-melt composition based thereon | Chemistry; Metallurgy | 25 | Expired |
| US4618640A | Hot-melt adhesive compositions comprising a partially (fumarized and/or maleinized) disproportionated rosin ester tackifier | Chemistry; Metallurgy | 22 | Expired |
| US4248770A | Process for preparing stabilized rosin ester, and pressure-sensitive adhesive composition and hot-melt composition | Chemistry; Metallurgy | 20 | Expired |
| US4622357A | Pressure-sensitive adhesive compositions | Chemistry; Metallurgy | 20 | Expired |
| US4296012A | Sizing compositions incorporating ketene dimer | Textiles; Paper | 12 | Expired |
| US4847010A | Process for preparing rosin ester with esterification and hydrogenation | Chemistry; Metallurgy | 12 | Expired |
| US4576680A | Method of sizing paper | Textiles; Paper | 10 | Expired |
| US4508806A | Electrophotographic toner composition | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4507376A | Electrophotographic toner composition | Emerging Cross-Sectional Technologies | 9 | Expired |
| US4814249A | Electrophotographic toner composition excellent in fixing property at low temperature | Physics | 9 | Expired |
| US4544414A | Self-emulsifying sizing composition | Textiles; Paper | 9 | Expired |
| US4647636A | Process for preparing highly water-absorbent resin | Human Necessities | 8 | Expired |
| US4271066A | Process for disproportionating rosin, poly-unsaturated fatty acids and mixtures thereof | Chemistry; Metallurgy | 7 | Expired |
| US5145522A | Ketene dimer sizing agent for paper making | Textiles; Paper | 6 | Expired |
| US5062922A | Sizing paper with .alpha.-hydroxycarboxylic acid | Chemistry; Metallurgy | 5 | Expired |
| US4309338A | Process for preparing aqueous dispersion of rosin-base materials | Chemistry; Metallurgy | 5 | Expired |
| US5354784A | Cyclopentadienyliron complex salt, process for preparing the same and photopolymerizable composition containing the same | Chemistry; Metallurgy | 5 | Expired |
| US4267099A | Process for preparing aqueous dispersion of rosin-base materials | Chemistry; Metallurgy | 4 | Expired |
| US5395920A | Process for preparing rosin and colorless rosin comprising disproportionation and dehydrogenation | Chemistry; Metallurgy | 4 | Expired |
| US4540480A | Process for preparing hydrogenated petroleum resin | Chemistry; Metallurgy | 4 | Expired |
| US4906733A | Process for preparing colorless rosin | Chemistry; Metallurgy | 4 | Expired |
| US5053507A | Optically active pyrimidines derivatives | Chemistry; Metallurgy | 4 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.