3859211

Information

• Patent Grant
• 3859211

• References
• Source

• Patent Number

  3,859,211

• Date Filed

  Not available

• Date Issued

  Tuesday, January 7, 1975
  50 years ago

• CPC

  • C23F11/1676 - Phosphonic acids
  • C02F1/542 - Phosphorus compounds
  • C02F5/14 - containing phosphorus
  • C07D233/16 - Radicals substituted by nitrogen atoms
  • C07F9/3808 - Acyclic saturated acids which can have further substituents on alkyl
  • C07F9/65061 - the phosphorus atom is bonded to a cyclic nitrogen atom, directly, through one or more heteroatoms or through a hydrocarbon chain which may be broken by one or more heteroatoms
  • C07F9/6533 - Six-membered rings
  • C07F9/65583 - each of the hetero rings containing nitrogen as ring hetero atom
  • C12H1/04 - with the aid of ion-exchange material or inert clarification material
  • C12N1/02 - Separating micro-organisms from their culture media
  • C23F14/02 - by chemical means

• US Classifications

  • 210 - Liquid purification or separation
  • 987 - Organic compounds containing a bi, sb, as, or p atom or containing a metal atom of the 6th to 8th group of the periodic system