QUATERNARY NITROGEN-CONTAINING CELLULOSE ETHERS

• US 3,472,840 A
• Filed: 09/14/1965
• Issued: 10/14/1969
• Est. Priority Date: 09/14/1965
• Status: Expired due to Term

• Current Assignee: Fred W. Stone, John M. Rutherford Jr
• Original Assignee: Fred W. Stone, John M. Rutherford Jr
• Inventors: Stone, Fred W., Rutherford, John M. Jr.
• Application Number:
  US04/487,312
• Time in Patent Office: 1,491 Days
• US Class Current: 536/43
• CPC Class Codes: C02F 1/5263 using natural chemical compounds
• CPC Class Codes: C02F 1/54 using organic material
• CPC Class Codes: C08B 11/04 with substituted hydrocarbon radicals
• CPC Class Codes: C08B 11/14 with nitrogen-containing groups
• CPC Class Codes: C08B 11/145 with basic nitrogen, e.g. aminoalkyl ethers
• CPC Class Codes: C08B 11/193 Mixed ethers, i.e. ethers with two or more different etherifying groups

Claims