POLYPLASTICS CO., LTD.
385Patents
76Active
385Granted
45Portfolio score
Filing activity: Dec 26, 1979 → Dec 6, 2021 · 23 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5409763A | Long-fiber-reinforced polyolefin resin structure and article molded therefrom | Emerging Cross-Sectional Technologies | 156 | Expired |
| US7648748B2 | Liquid crystalline resin composition for blow molding | Emerging Cross-Sectional Technologies | 54 | Active |
| US5852135A | Thermoplastic resin compositions and a method of producing the same | Chemistry; Metallurgy | 53 | Expired |
| US7115677B2 | Flame-retardant resin composition | Chemistry; Metallurgy | 47 | Expired |
| US5783129A | Apparatus, method, and coating die for producing long fiber-reinforced thermoplastic resin composition | Emerging Cross-Sectional Technologies | 47 | Expired |
| US6010760A | Thermoplastic resin composition, injection molding method thereof, and injection molded article | Emerging Cross-Sectional Technologies | 41 | Expired |
| US6063848A | Liquid crystalline polymer composition and moldings | Chemistry; Metallurgy | 41 | Expired |
| US6702955B1 | Liquid crystal polymer composition for connectors and connector | Electricity | 39 | Expired |
| US7704408B2 | Resin-molded component for signal reader and method for molding thereof | Physics | 37 | Active |
| US6797198B1 | Liquid-crystalline polymer composition | Emerging Cross-Sectional Technologies | 37 | Expired |
| US5354532A | Methods for molding composite polyester articles having rigid and flexible regions | Chemistry; Metallurgy | 36 | Expired |
| US6758989B2 | Liquid-crystalline polymer molding | Emerging Cross-Sectional Technologies | 35 | Expired |
| US6753363B1 | Polyacetal resin composition and process for production thereof | Chemistry; Metallurgy | 34 | Expired |
| US4772421A | Process for producing electroconductive resin composite | Electricity | 34 | Expired |
| US4692480A | Thermoplastic resin composition | Chemistry; Metallurgy | 33 | Expired |
| US4772422A | Electrically conductive resin composition | Chemistry; Metallurgy | 32 | Expired |
| US5346802A | Process for laser-marking thermoplastic articles | Emerging Cross-Sectional Technologies | 32 | Expired |
| US7789670B2 | Planar connector | Physics | 31 | Active |
| US7980897B2 | Asymmetric electronic parts | Chemistry; Metallurgy | 30 | Active |
| US5300572A | Moldable polyester resin compositions and molded articles formed of the same | Chemistry; Metallurgy | 30 | Expired |
| US8272879B2 | Planar connector | Chemistry; Metallurgy | 30 | Active |
| US4888127A | Liquid crystal polyester resin composition having excellent surface characteristics | Chemistry; Metallurgy | 30 | Expired |
| US5149731A | Polyarylene sulfide resin composition | Chemistry; Metallurgy | 29 | Expired |
| US5639410A | Apparatus and method for manufacturing a resin structure reinforced with long fibers | Performing Operations; Transporting | 29 | Expired |
| US5478563A | Antibacterial and antifungal polyacetal resin composition | Human Necessities | 29 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.