HYDRANAUTICS
Patent Owner
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- 3 US PATENTS IN FORCE
- 0 US APPLICATIONS PENDING
- Aug 15, 2017 most recent publication
Details
- 3 Issued Patents
- 0 Issued in last 3 years
- 0 Published in last 3 years
- 766 Total Citation Count
- May 15, 1979 Earliest Filing
- 22 Expired/Abandoned/Withdrawn Patents
Patent Activity in the Last 10 Years
Technologies
Intl Class
Technology
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Recent Patents
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Expired/Abandoned/Withdrawn Patents
Patent #
Title
Status
Filing Date
Issue/Pub Date
Intl Class
8357300 Methods and materials for selective boron adsorption from aqueous solutionExpiredAug 16, 10Jan 22, 13[C02F, B01D]
2009/0314,713 Cross-flow filtration apparatus with biocidal feed spacerAbandonedJun 19, 09Dec 24, 09[C02F, B01D]
7531042 Methods for cleaning and maintaining membrane surface during filtrationExpiredDec 18, 03May 12, 09[B08B]
2009/0039,020 METHODS FOR REDUCING BORON CONCENTRATION IN HIGH SALINITY LIQUIDAbandonedOct 20, 08Feb 12, 09[C02F]
7442309 Methods for reducing boron concentration in high salinity liquidExpiredJun 12, 03Oct 28, 08[B01D]
7378024 Methods for improving filtration performance of hollow fiber membranesExpiredDec 18, 02May 27, 08[B01D]
7001518 Low pressure reverse osmosis and nanofiltration membranes and method for the production thereofExpiredNov 28, 00Feb 21, 06[B01D]
2005/0147,757 Method for wetting hydrophobic porous polymeric membranes to improve water flux without alcohol treatmentAbandonedJan 06, 05Jul 07, 05[B05D]
2004/0188,339 Submergible membrane modular filtration device having replaceable membrane elementsAbandonedMar 05, 04Sep 30, 04[B01D]
2003/0230,531 Method for reducing boron concentration in high salinity liquidAbandonedJul 03, 02Dec 18, 03[B01D]
2003/0015,823 Method for forming a thick section, thermoset, solid castingAbandonedJul 18, 01Jan 23, 03[B29C]
6495043 Membrane which comprises a blend of a polysulphone or a polyether sulphone and polyethylene oxide/polypropylene oxide substituted ethylene diamineExpiredOct 23, 00Dec 17, 02[B01D]
6464873 Interfacially polymerized, bipiperidine-polyamide membranes for reverse osmosis and/or nanofiltration and process for making the sameExpiredJun 15, 99Oct 15, 02[B01D]
6183639 Hollow fiber filter module and method of manufacturing sameExpiredSep 28, 99Feb 06, 01[B01D]
5922203 Amine monomers and their use in preparing interfacially synthesized membranes for reverse osmosis and nanofiltrationExpiredOct 07, 97Jul 13, 99[B01D]
5246587 Interfacially synthesized reverse osmosis membranes and processes for preparing the sameExpiredMay 19, 92Sep 21, 93[B01D]
4948507 Interfacially synthesized reverse osmosis membrane containing an amine salt and processes for preparing the sameExpiredOct 06, 89Aug 14, 90[B01D]
4872984 Interfacially synthesized reverse osmosis membrane containing an amine salt and processes for preparing the sameExpiredSep 28, 88Oct 10, 89[B01D]
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