3728257

Information

• Patent Grant
• 3728257

• References
• Source

• Patent Number

  3,728,257

• Date Filed

  Not available

• Date Issued

  Tuesday, April 17, 1973
  51 years ago

• CPC

  • B01J20/22 - comprising organic material
  • B01J20/20 - comprising free carbon comprising carbon obtained by carbonising processes
  • B01J20/28004 - Sorbent size or size distribution
  • B01J20/28014 - characterised by their form
  • B01J20/3204 - Inorganic carriers, supports or substrates
  • B01J20/3248 - the functional group or the linking, spacer or anchoring group as a whole comprising at least one type of heteroatom selected from a nitrogen, oxygen or sulfur, these atoms not being part of the carrier as such
  • B01J20/3253 - comprising a cyclic structure not containing any of the heteroatoms nitrogen, oxygen or sulfur
  • B01J47/006 - Modification or after-treatment of ion-exchangers
  • C01B31/083 - After-treatment
  • C01B31/084 - Coating; Grafting; Microencapsulation
  • C01B31/125 - Preparation by impregnation with a metallic compound
  • C02F1/288 - using composite sorbents
  • B01J2220/56 - Use in the form of a bed
  • B01J2220/58 - Use in a single column
  • Y10S210/912 - Heavy metal
  • Y10S210/913 - Chromium
  • Y10S423/14 - Ion exchange chelation or liquid/liquid ion extraction

• US Classifications

  • 210 - Liquid purification or separation
  • 423 - Chemistry of inorganic compounds