Dainippon Ink and Chemicals, Inc.
649Patents
31Active
649Granted
45Portfolio score
Filing activity: Apr 27, 1971 → Jun 10, 2011 · 30 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4590160A | Process for production of .beta.-glycosyl stevioside derivatives | Emerging Cross-Sectional Technologies | 136 | Expired |
| US4907709A | Combination of synthetic resin bottle and closure therefor | Performing Operations; Transporting | 126 | Expired |
| US4616262A | Method and apparatus for forming a combined image signal | Electricity | 125 | Expired |
| US4515737A | Process for producing composite plastic pipe | Performing Operations; Transporting | 107 | Expired |
| US5327271A | Liquid crystal device employing polymer network on one substrate and alignment layer or polymer network on other substrate | Physics | 77 | Expired |
| US4664681A | Heterogeneous membrane and process for production thereof | Emerging Cross-Sectional Technologies | 69 | Expired |
| US4528346A | Resin composition | Chemistry; Metallurgy | 65 | Expired |
| US5413629A | Laser marking and printing ink therefor | Chemistry; Metallurgy | 62 | Expired |
| US5055522A | Polyvinyl chloride resin composition | Chemistry; Metallurgy | 62 | Expired |
| US5863457A | Polymerizable liquid crystal composition and optically anisotropic film comprising the same | Chemistry; Metallurgy | 60 | Expired |
| US5192320A | Artificial lung and method of using it | Performing Operations; Transporting | 60 | Expired |
| US4472736A | Lithographic reproduction original classification and color separation tone curve adjustment | Electricity | 58 | Expired |
| US5254143A | Diaphragm for gas-liquid contact, gas-liquid contact apparatus and process for producing liquid containing gas dissolved therein | Emerging Cross-Sectional Technologies | 58 | Expired |
| US5141983A | Aqueous coating composition | Chemistry; Metallurgy | 57 | Expired |
| US4499239A | Resin composition for powder coating | Chemistry; Metallurgy | 56 | Expired |
| US5484882A | Process for the continuous production of biodegradable polyester polymer | Emerging Cross-Sectional Technologies | 54 | Expired |
| US4888059A | Cement dispersing agent | Emerging Cross-Sectional Technologies | 54 | Expired |
| US4536298A | Aqueous foam fire extinguisher | Human Necessities | 54 | Expired |
| US5556583A | Encapsulation method | Emerging Cross-Sectional Technologies | 53 | Expired |
| US5686540A | Process for the preparation of lactic acid-based polyester | Chemistry; Metallurgy | 51 | Expired |
| US4891241A | Method of increasing the dynamical strength of glass container | Emerging Cross-Sectional Technologies | 51 | Expired |
| US4728592A | Electrophotoconductor with light-sensitive layer containing alpha-type titanyl phthalocyanine | Physics | 50 | Expired |
| US5401793A | Intumescent fire-resistant coating, fire-resistant material, and process for producing the fire-resistant material | Emerging Cross-Sectional Technologies | 49 | Expired |
| US6153276A | Heat-sealable lactic acid-based polymer laminates | Emerging Cross-Sectional Technologies | 48 | Expired |
| US5714218A | Ionizing radiation-curable resin composition for optical article, optical article, and surface light source | Emerging Cross-Sectional Technologies | 46 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.