Sergei V. Levchik
17Patents
4h-index
30Co-inventors
56Inventor score
Filing activity: Jan 4, 2002 → Aug 24, 2017
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US6569928B1 | Phosphorus-containing fire retardant thermoplastic polyester composition | Chemistry; Metallurgy | 24 | Expired |
| US7449526B2 | Oligomeric, hydroxy-terminated phosphonates | Emerging Cross-Sectional Technologies | 9 | Expired |
| US8026303B2 | Halogen-free flame retardant compositions, thermoplastic compositions comprising the same and methods of producing the compositions | Chemistry; Metallurgy | 5 | Active |
| US8003722B2 | Flame retardant compositions containing mixtures of disubstituted phosphinate salts and monosubstituted phoshinate salts | Chemistry; Metallurgy | 4 | Active |
| US7662876B2 | Arylalkylsilyls used as flame retardant additives | Chemistry; Metallurgy | 3 | Expired |
| US8889773B2 | Metal phosphonate flame retardant and method producing thereof | Emerging Cross-Sectional Technologies | 3 | Active |
| US7427652B2 | Composition of epoxy resin, OH-terminated phosphonate oligomer and inorganic filler | Electricity | 2 | Expired |
| US7807737B2 | Phosphorus-containing flame retardant for thermoplastic polymers | Chemistry; Metallurgy | 2 | Expired |
| US7910665B2 | Composition of epoxy resin and epoxy-reactive polyphosphonate | Chemistry; Metallurgy | 1 | Expired |
| US6717005B2 | Epoxy-stabilized polyphosphate compositions | Chemistry; Metallurgy | 1 | Expired |
| US9475933B2 | Antimony trioxide free flame retardant thermoplastic composition | Chemistry; Metallurgy | 1 | Active |
| US10500823B2 | Active ester curing agent compound for thermosetting resins, flame retardant composition comprising same, and articles made therefrom | Electricity | 0 | Active |
| US8772424B2 | Curable phosphorus-containing flame retardant epoxy resin | Emerging Cross-Sectional Technologies | 0 | Active |
| US7541415B2 | Process for preparing diaryl alkylphosphonates and oligomeric/polymeric derivatives thereof | Chemistry; Metallurgy | 0 | Expired |
| US8058322B2 | Flame-retardant flexible polyurethane foam | Chemistry; Metallurgy | 0 | Active |
| US10119012B2 | Flame-retarded polyolefin polymer composition with reduced antimony trioxide content | Chemistry; Metallurgy | 0 | Active |
| US11008460B2 | Flame-retarded polyamide composition | Chemistry; Metallurgy | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.