NORAM ENGINEERING AND CONSTRUCTORS LTD.
21Patents
11Active
21Granted
44Portfolio score
Filing activity: Sep 12, 1989 → Mar 17, 2020 · 3 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4994242A | Jet impingement reactor | Performing Operations; Transporting | 22 | Expired |
| US6288289A | Integrated effluent treatment process for nitroaromatic manufacture | Emerging Cross-Sectional Technologies | 19 | Expired |
| US7258788B2 | Circular clarifier apparatus and method | Chemistry; Metallurgy | 14 | Expired |
| US5890531A | Apparatus for the self-cleaning of process tubes | Mechanical Engineering; Lighting; Heating | 13 | Expired |
| US7033507B2 | Method for removing metals from acid mine drainage | Emerging Cross-Sectional Technologies | 11 | Expired |
| US5963878A | Nitration process | Chemistry; Metallurgy | 9 | Expired |
| US6468429B1 | Apparatus and method for controlling liquor circulation flow in long vertical shaft bioreactors | Emerging Cross-Sectional Technologies | 6 | Expired |
| US7419605B2 | Method for treating metal-contaminated water and soil | Emerging Cross-Sectional Technologies | 4 | Expired |
| US10016726B2 | Purification process for partly-hydrolyzed cellulose | Performing Operations; Transporting | 1 | Active |
| US6537439B2 | Method and apparatus for recovering a reaction product produced at a surface | Performing Operations; Transporting | 1 | Expired |
| US8246779B2 | Maintenance of sulfur concentration in Kraft pulp processes | Textiles; Paper | 1 | Active |
| US10933368B2 | Gas treatment processes and systems for reducing tail gas emissions | Emerging Cross-Sectional Technologies | 0 | Active |
| US7572308B2 | Mechanical system for installing and removing contacting devices from a chemical process tower | Performing Operations; Transporting | 0 | Active |
| US11207628B2 | Processes and devices for separating entrainment from sulphuric acid plant process gas | Performing Operations; Transporting | 0 | Active |
| US6355223B1 | Closed loop process for producing chlorine from hydrogen chloride | Emerging Cross-Sectional Technologies | 0 | Expired |
| US12358813B2 | Kraft pulping foul condensate treatment process and apparatus | Chemistry; Metallurgy | 0 | Active |
| US10697122B2 | Process for making partly-hydrolyzed cellulose using compressed cellulosic materials | Textiles; Paper | 0 | Active |
| US10350543B2 | Gas treatment process and apparatus | Emerging Cross-Sectional Technologies | 0 | Active |
| US9567707B2 | Purification process for partly-hydrolyzed cellulose | Textiles; Paper | 0 | Active |
| US12420246B2 | Fluid mixing device | Performing Operations; Transporting | 0 | Active |
| US7758758B2 | Method for treating acidic waters using recycled acidic and basic sludges | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.