APEX ENGINEERING INC.
6Patents
3Active
6Granted
35Portfolio score
Filing activity: Jan 23, 1989 → Mar 11, 2015 · 2 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5410120A | Welding enclosure assembly | Performing Operations; Transporting | 27 | Expired |
| US5491320A | Method and apparatus for welding ventilation | Performing Operations; Transporting | 6 | Expired |
| US5005983A | Plate blender | Performing Operations; Transporting | 4 | Expired |
| US7931800B2 | Method for extraction of bitumen from oil sands using lime | Chemistry; Metallurgy | 3 | Active |
| US8043494B2 | Method for improving bitumen recovery from oil sands by production of surfactants from bitumen asphaltenes | Chemistry; Metallurgy | 1 | Active |
| US9341051B2 | Methods for enhancing efficiency of bitumen extraction from oil sands using lipids and lipid by-products as process additives | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.