WANHUA CHEMICAL (NINGBO) CO., LTD.
17Patents
17Active
17Granted
49Portfolio score
Filing activity: Sep 17, 2009 → Aug 26, 2020
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US9790314B2 | Viscoelastic sound-absorbing polyurethane foam and preparation method thereof | Chemistry; Metallurgy | 2 | Active |
| US9593089B2 | Process for preparing TDI isocyanurate | Chemistry; Metallurgy | 0 | Active |
| US11964032B2 | Aqueous polyurethane functional mask substrate and application thereof | Human Necessities | 0 | Active |
| US8829245B2 | 3-aminomethyl-3, 5, 5-trimethyl cyclohexylamine preparation method | Chemistry; Metallurgy | 0 | Active |
| US10369559B2 | Composite catalyst, preparation process thereof, and process for catalyzing the trimerization of butadiene using the composite catalyst | Chemistry; Metallurgy | 0 | Active |
| US8759591B2 | Method for intermittently producing 4,4′-diaminodicyclohexylmethane with a low amount of the trans-trans isomer | Chemistry; Metallurgy | 0 | Active |
| US11814339B2 | Method for preparing isocyanate in gaseous phase | Chemistry; Metallurgy | 0 | Active |
| US9399582B2 | Catalyst for preparing phosgene and method for preparing phosgene using the same | Performing Operations; Transporting | 0 | Active |
| US12304993B2 | Storage-stable polyisocyanate composition and preparation method | Chemistry; Metallurgy | 0 | Active |
| US11597796B2 | Ionic aqueous epoxy curing agent, preparation method therefor and use thereof | Chemistry; Metallurgy | 0 | Active |
| US9802848B2 | Method for treating waste saline water produced in production process of diphenylmethane diisocyanate (MDI) | Chemistry; Metallurgy | 0 | Active |
| US12378475B2 | Preparation method for emulsifier, emulsifier, aqueous epoxy resin dispersion and formulation method | Chemistry; Metallurgy | 0 | Active |
| US12227610B2 | Aqueous dispersion comprising polyurethane or polyurethane-urea, preparation method therefor and use thereof | Chemistry; Metallurgy | 0 | Active |
| US12383857B2 | Apparatus and method for rapid cooling of high temperature gas | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US12122876B2 | Method for preparing reactive sealant resin | Chemistry; Metallurgy | 0 | Active |
| US12226761B2 | Catalyst for preparing phosgene and preparation method therefor, and method for preparation of phosgene and comprehensive utilization of energy thereof | Performing Operations; Transporting | 0 | Active |
| US12024582B2 | Preparation method for polyurethane optical resin and applications thereof | Physics | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.