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Class Information
Number: 210/500.38
Name: Liquid purification or separation > Filter > Material > Semipermeable membrane > Organic > Amine > Amide
Description: Subject matter comprising a -C(=O)-NH2










Sub-classes under this class:

Class Number Class Name Patents
210/500.39 Imide 194


Patents under this class:
1 2 3 4 5 6 7 8 9 10

Patent Number Title Of Patent Date Issued
8684187 Semipermeable polymers and method for producing same Apr. 1, 2014
8672142 Composite semipermeable membrane Mar. 18, 2014
8646616 Composite membrane with coating comprising polyalkylene oxide and imidazol compounds Feb. 11, 2014
8646617 Reverse osmosis membrane having good antifouling properties and method of manufacturing the same Feb. 11, 2014
8640886 Composite membrane including coating of polyalkylene oxide and triazine compounds Feb. 4, 2014
8631946 Composite semipermeable membrane and method for producing same Jan. 21, 2014
8616380 Reverse osmosis composite membranes for boron removal Dec. 31, 2013
8602222 Composite semipermeable membranes, methods for production thereof and uses thereof Dec. 10, 2013
8602223 High performance membrane Dec. 10, 2013
8591741 Thin film composite membranes incorporating carbon nanotubes Nov. 26, 2013
8584870 Composite semipermeable membrane Nov. 19, 2013
8580341 Method of making composite membrane Nov. 12, 2013
8567612 Hybrid TFC RO membranes with nitrogen additives Oct. 29, 2013
8550256 Filtration membrane with covalently grafted fouling-resistant polymer Oct. 8, 2013
8544658 Functionalized thin film polyamide membranes Oct. 1, 2013
8518310 Process for producing a dried composite semipermeable membrane Aug. 27, 2013
8505743 Surface modification of polyamide reverse osmosis membranes Aug. 13, 2013
8506814 Process for membrane separation of linear hydrocarbons within a hydrocarbon mixture Aug. 13, 2013
8496122 Permselective membrane and process for manufacturing thereof Jul. 30, 2013
8460554 Forward osmosis membranes Jun. 11, 2013
8443986 Reverse osmosis membrane and reverse osmosis membrane apparatus May. 21, 2013
8292090 Process of forming multilayered structures Oct. 23, 2012
8292091 Process of forming multilayered structures Oct. 23, 2012
8286803 Methods and systems for incorporating carbon nanotubes into thin film composite reverse osmosis membranes Oct. 16, 2012
8231013 Articles comprising a fibrous support Jul. 31, 2012
8197745 Perm selective asymmetric hollow fibre membrane for the separation of toxic mediators from blood Jun. 12, 2012
8187534 Porous barrier media comprising color change indicators May. 29, 2012
8181794 Forward osmosis membranes May. 22, 2012
8181792 Process of forming multilayered structures May. 22, 2012
8177978 Reverse osmosis membranes May. 15, 2012
8147735 Semipermeable polymers and method for producing same Apr. 3, 2012
8141717 Sintered polymeric materials and applications thereof Mar. 27, 2012
8136675 Perm selective asymmetric hollow fibre membrane for the separation of toxic mediators from blood Mar. 20, 2012
8136676 Polymers useful as medical materials Mar. 20, 2012
8092918 Polyamide matrices and methods for their preparation and use Jan. 10, 2012
8061532 Process of forming multilayered structures Nov. 22, 2011
8029857 Micro-and nanocomposite support structures for reverse osmosis thin film membranes Oct. 4, 2011
8025159 Agent for increasing rejection with a permeable membrane, process for increasing the rejection, permeable membrane and process for water treatment Sep. 27, 2011
8002120 Modified polyamide membrane Aug. 23, 2011
7993524 Membranes with embedded nanotubes for selective permeability Aug. 9, 2011
7959808 Polysulfone membranes methods and apparatuses Jun. 14, 2011
7918349 Composite polyamide membrane with branched poly(alkylene oxide) modified surface Apr. 5, 2011
7913857 Selective membrane having a high fouling resistance Mar. 29, 2011
7909179 Modified polyamide matrices and methods for their preparation Mar. 22, 2011
7905361 Modified polyamide membrane Mar. 15, 2011
7891500 Process of forming multilayered structures Feb. 22, 2011
7882963 Modified membrane Feb. 8, 2011
7866487 Aromatic polyamide porous film, process for producing the same and secondary battery Jan. 11, 2011
7842214 Process for forming microporous membranes Nov. 30, 2010
7806275 Chlorine resistant polyamides and membranes made from the same Oct. 5, 2010

1 2 3 4 5 6 7 8 9 10










 
 
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