Organic compounds -- part of the class 532-570 series – Organic compounds – Carbohydrates or derivatives
Reexamination Certificate
2006-08-29
2006-08-29
O'Sullivan, Peter (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Carbohydrates or derivatives
C502S011000, C502S516000, C210S660000, C210S661000, C210S679000, C210S681000, C210S682000, C210S683000, C210S684000, C210S685000, C210S686000, C210S687000, C210S688000, C252S179000, C252S180000, C252S181000, C536S017400, C536S044000, C536S063000, C536S085000, C536S087000, C536S089000, C536S091000
Reexamination Certificate
active
07098327
ABSTRACT:
A process for the production of dual-functional ion exchange resins from lignocellulosic agricultural material involving anionization of the lignocellulosic agricultural material with citric acid and then cationization of the lignocellulosic agricultural material with dimethyloldihydroxyethylene urea (DMDHEU) and choline chloride, or cationization of the lignocellulosic agricultural material with DMDHEU and choline chloride and then anionization of the lignocellulosic agricultural material with citric acid.
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Marshall Wayne E.
Wartelle Lynda H.
Fado John D.
O'Sullivan Peter
Stover G. Byron
The United States of America as represented by the Secretary of
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