Issued Patents All Time
Showing 1–25 of 29 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11241657 | Filter for removing silica from ultra pure water and method of use | Amarnauth Singh | 2022-02-08 |
| 9248414 | Large pore polymeric membrane | Amarnauth Singh | 2016-02-02 |
| 8840791 | Multilayer microfiltration membrane | Richard A. Morris, Xuemei Liang | 2014-09-23 |
| 7851043 | Laminates of asymmetric membranes | Jerry Ditter, Richard McDonogh, Steve Lamon, Todd Benson, Rey Sarabia +2 more | 2010-12-14 |
| 7125493 | Highly asymmetric, hydrophilic, microfiltration membranes having large pore diameters | Richard A. Morris, Robert Zepf | 2006-10-24 |
| 6939468 | Highly asymmetric, hydrophilic, microfiltration membranes having large pore diameters | Richard A. Morris, Robert Zepf | 2005-09-06 |
| 6884375 | Hydrophobic membrane materials for filter venting applications | Richard McDonogh, James Rudolph | 2005-04-26 |
| 6811696 | Hydrophobic membrane materials for filter venting applications | Richard McDonogh, James Rudolph | 2004-11-02 |
| 6596112 | Laminates of asymmetric membranes | Jerry Ditter, Richard McDonogh, Steve Lamon, Todd Benson, Rey Sarabia +2 more | 2003-07-22 |
| 6579342 | Oleophobic membrane materials by oligomer polymerization for filter venting applications | Jeff Palpallatoc | 2003-06-17 |
| 6565782 | Highly asymmetric, hydrophilic, microfiltration membranes having large pore diameters | Richard A. Morris, Robert Zepf | 2003-05-20 |
| 6565748 | Cationically charge-modified membranes | Robert Zepf | 2003-05-20 |
| 6355081 | Oleophobic filter materials for filter venting applications | Richard McDonogh | 2002-03-12 |
| 6258272 | Internal hydrophilic membranes from blended anionic copolymers | Richard A. Morris, Richard McDonogh | 2001-07-10 |
| 6183640 | Highly asymmetric anionic membranes | — | 2001-02-06 |
| 6146747 | Highly porous polyvinylidene difluoride membranes | Jerome F. Ditter, Robert Zepf | 2000-11-14 |
| 6110309 | Process of making a polyvinylidene difluoride membrane | Jerome F. Ditter, Robert Zepf | 2000-08-29 |
| 6045899 | Highly assymetric, hydrophilic, microfiltration membranes having large pore diameters | Richard A. Morris, Robert Zepf | 2000-04-04 |
| 6045694 | Cationically charge-modified membranes | Robert Zepf | 2000-04-04 |
| 5958989 | Highly asymmetric ultrafiltration membranes | Jerome F. Ditter, Richard A. Morris, Robert E. Kesting | 1999-09-28 |
| 5928774 | Highly asymmetric ultrafiltration membranes | Jerome F. Ditter, Richard A. Morris, Robert E. Kesting | 1999-07-27 |
| 5906742 | Microfiltration membranes having high pore density and mixed isotropic and anisotropic structure | Jerome F. Ditter, Rick Morris | 1999-05-25 |
| 5886059 | Highly asymmetric polyethersulfone filtration membranes | — | 1999-03-23 |
| 5869174 | Highly asymmetric polyethersulfone filtration membranes | — | 1999-02-09 |
| 5834107 | Highly porous polyvinylidene difluoride membranes | Jerome F. Ditter, Robert Zepf | 1998-11-10 |