公开(公告)号：DE69705240T2

公开(公告)日：2002-05-29

申请号：DE69705240

申请日：1997-11-21

Applicant: CUNO INC

Inventor： OLSEN K ,  PULEK L ,  LUCAS A ,  ITURRINO LAURIE ,  HAMLIN J ,  CIZEK ERIC ,  SCHORR L

IPC: B01D29/39 ,  B01D27/00 ,  B01D27/08 ,  B01D29/11 ,  B01D35/16 ,  B01D36/00 ,  B01D39/18 ,  B01D29/41

Abstract: A method for retrieving excess pharmaceutical process fluid from the hold-up volume of a primary fluid filtration device. The hold-up volume is the volume of excess process fluid which accumulates in the bottom of the filter housing below the outlet opening thereof. Because it is considered valuable, the excess pharmaceutical process fluid is retrieved from the lower housing (22) via a drainage port (23) formed therein below the level of the outlet. The excess process fluid is then filtered in a supplemental filtration device (100) that is connected to the drainage port. The supplemental filtration device has a smaller volumetric capacity than the capacity of the primary fluid filtration device.

公开(公告)号：DE60303807D1

公开(公告)日：2006-04-27

申请号：DE60303807

申请日：2003-09-24

Applicant: CUNO INC

Inventor： LUCAS A ,  PAUL THOMAS ,  MORBY JOHN

IPC: B01D29/21 ,  B01D63/06

Abstract: A filter element is disclosed that includes a filtration media, an upstream pleat support and a multi-layer downstream pleat support. The multi-layer downstream support includes a first downstream support layer and a second downstream support layer. The first downstream support layer is in contact with the filtration media and is interposed between the filtration media and the second downstream layer. The first downstream support layer is fabricated so as to minimize points of surface contact with the filtration media, thereby enhancing fluid flow away from the filtration media. The second downstream support layer is in contact with the first downstream support layer and is fabricated so as to facilitate lateral fluid flow relative to the multi-layer downstream pleat support. The disclosed filter element may be utilized in filter cartridges of various designs to provide enhanced filtration performance, e.g., by way of increased media area and improved flow/throughput.

公开(公告)号：DE69705240D1

公开(公告)日：2001-07-19

申请号：DE69705240

申请日：1997-11-21

Applicant: CUNO INC

Inventor： OLSEN K ,  PULEK L ,  LUCAS A ,  ITURRINO LAURIE ,  HAMLIN J ,  CIZEK ERIC ,  SCHORR L

IPC: B01D29/39 ,  B01D27/00 ,  B01D27/08 ,  B01D29/11 ,  B01D35/16 ,  B01D36/00 ,  B01D39/18 ,  B01D29/41

Abstract: A method for retrieving excess pharmaceutical process fluid from the hold-up volume of a primary fluid filtration device. The hold-up volume is the volume of excess process fluid which accumulates in the bottom of the filter housing below the outlet opening thereof. Because it is considered valuable, the excess pharmaceutical process fluid is retrieved from the lower housing (22) via a drainage port (23) formed therein below the level of the outlet. The excess process fluid is then filtered in a supplemental filtration device (100) that is connected to the drainage port. The supplemental filtration device has a smaller volumetric capacity than the capacity of the primary fluid filtration device.

公开(公告)号：DE60303807T2

公开(公告)日：2006-10-05

申请号：DE60303807

申请日：2003-09-24

Applicant: CUNO INC

Inventor： LUCAS A ,  PAUL THOMAS ,  MORBY JOHN

IPC: B01D29/21 ,  B01D63/06

Abstract: A filter element is disclosed that includes a filtration media, an upstream pleat support and a multi-layer downstream pleat support. The multi-layer downstream support includes a first downstream support layer and a second downstream support layer. The first downstream support layer is in contact with the filtration media and is interposed between the filtration media and the second downstream layer. The first downstream support layer is fabricated so as to minimize points of surface contact with the filtration media, thereby enhancing fluid flow away from the filtration media. The second downstream support layer is in contact with the first downstream support layer and is fabricated so as to facilitate lateral fluid flow relative to the multi-layer downstream pleat support. The disclosed filter element may be utilized in filter cartridges of various designs to provide enhanced filtration performance, e.g., by way of increased media area and improved flow/throughput.