Ion Exchange Or Selective Sorption Patents (Class 210/660)
- Of oil sorbent material (Class 210/671)
- Fractional, selective, or partial type (Class 210/672)
- Utilizing gas, water, or chemical oxidizing or reducing agent (Class 210/673)
- Utilizing organic regenerant (Class 210/674)
- Rehabilitating or regenerating in diverse zone or chamber (Class 210/675)
- Using conserved or recirculated fluid (Class 210/677)
- Including liquid flow direction change (Class 210/678)