Assignee
ALIGENA AG
CH·24 granted patents·1,270 citations·filing 1978–1995
Top patents by PatentIndex Score
24 records- 0194US4778596ASemipermeable encapsulated membranes, process for their manufacture and their useALIGENA AG·Filed 1986·Granted Oct 18, 1988·94 cites·35 claims
- 0293US4833014AComposite membranes useful for the separation of organic compounds of low molecular weight from aqueous inorganic salts containing solutionsALIGENA AG·Filed 1988·Granted May 23, 1989·82 cites·4 claims
- 0393US4767645AComposite membranes useful for the separation of organic compounds of low molecular weight from aqueous inorganic salts containing solutionsALIGENA AG·Filed 1987·Granted Aug 30, 1988·68 cites·23 claims
- 0492US5028337ACoated membranesALIGENA AG·Filed 1990·Granted Jul 2, 1991·93 cites·44 claims
- 0592US4911844AModified polyvinylalcohol containing semipermeable composite membranes, process for their manufacture and their useALIGENA AG·Filed 1988·Granted Mar 27, 1990·69 cites·12 claims
- 0692US4690766AChemically modified semipermeable polysulfone membranes and their use in reverse osmosis and ultrafiltrationALIGENA AG·Filed 1985·Granted Sep 1, 1987·77 cites·26 claims
- 0792US4659474ADynamically formed membranesALIGENA AG·Filed 1983·Granted Apr 21, 1987·62 cites·8 claims
- 0891US5039421ASolvent stable membranesALIGENA AG·Filed 1989·Granted Aug 13, 1991·80 cites·44 claims
- 0990US5087338AProcess and device for separating electrically charged macromolecular compounds by forced-flow membrane electrophoresisALIGENA AG·Filed 1989·Granted Feb 11, 1992·85 cites·13 claims
- 1088US5049282ASemipermeable composite membranesALIGENA AG·Filed 1990·Granted Sep 17, 1991·67 cites·23 claims
- 1188US5032282ASolvent-stable semipermeable composite membranesALIGENA AG·Filed 1990·Granted Jul 16, 1991·67 cites·28 claims
- 1286US4690765AChemically modified semipermeable membranes and their use in reverse osmosis and ultrafiltrationALIGENA AG·Filed 1985·Granted Sep 1, 1987·53 cites·27 claims
- 1383US4889636AHigh flux RO/UF membranesALIGENA AG·Filed 1986·Granted Dec 26, 1989·41 cites·32 claims
- 1483US4604204APorous, semipermeable membranes of chemically modified cellulose acetateALIGENA AG·Filed 1983·Granted Aug 5, 1986·42 cites·19 claims
- 1582US4584103AReverse osmosis of ultrafiltration modified polyacrylonitrile-containing membraneALIGENA AG·Filed 1982·Granted Apr 22, 1986·42 cites·18 claims
- 1679US4753725ASemipermeable composite membranes, their manufacture, and useALIGENA AG·Filed 1981·Granted Jun 28, 1988·31 cites·34 claims
- 1779US4720345ASemipermeable membranes of modified styrene-based polymers, process for their manufacture and their useALIGENA AG·Filed 1986·Granted Jan 19, 1988·45 cites·27 claims
- 1875US5024765AComposite membranes and processes using themALIGENA AG·Filed 1989·Granted Jun 18, 1991·36 cites·34 claims
- 1975US4477634AModified acrylonitrile polymer containing semipermeable membranesALIGENA AG·Filed 1982·Granted Oct 16, 1984·32 cites·10 claims
- 2071US5304307AChargedasymmetric mosaic membrancesALIGENA AG·Filed 1991·Granted Apr 19, 1994·32 cites·13 claims
- 2168US5597863AImmobilized buffered gels and membranes of hydroxy groups containing polymersALIGENA AG·Filed 1995·Granted Jan 28, 1997·19 cites·7 claims
- 2264US4247401AReverse osmosis separation process using porous asymmetric acetyl cellulose membraneALIGENA AG·Filed 1978·Granted Jan 27, 1981·25 cites·5 claims
- 2355US5430099AImmobilized buffered gels and membranes of hydroxy groups containing polymersALIGENA AG·Filed 1993·Granted Jul 4, 1995·14 cites·10 claims
- 2454US5599506AImmobilized buffered gels and membranes of hydroxy groups containing polymersALIGENA AG·Filed 1995·Granted Feb 4, 1997·14 cites·1 claims
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