David C Colby, 4617 Briar Rd, Manchester, NH 03110

2011023, Sep 29, 2011

Mar 25, 2010

12/731644

Warren C. Prouty - Danville NH, US
Mark C. Farrell - Reading MA, US
David Colby - Medford MA, US
Abdullatif Zaouk - Jamaica Plain MA, US
Basant Kumar Parida - Bellingham MA, US
James Carter - Bedford MA, US
Norman Dana - Albion RI, US
Xudong Xin - Quincy MA, US

B01D 61/10
B01D 61/02

210232

A reverse osmosis pressure vessel end cap assembly includes a seal plate positioned within a pressure vessel shell, with one or more load plates positioned to retain the seal plate in position. A load ring is captured or expanded by the load plates to secure the load ring into a channel in the interior surface of the pressure vessel shell. The end cap assembly thus provides secure yet easily removable access to the pressure vessel, capable of withstanding the high pressures of a reverse osmosis filtration system. Various exemplary embodiments of the assembly are provided.

2013024, Sep 19, 2013

Mar 15, 2012

13/421326

Taylour Johnson - Wilmington MA, US
David Colby - Wilmington MA, US

B01D 69/08
B23P 11/00
B05D 3/06

21050023, 427559, 427558, 29428

The present invention is directed to a method of sealing the free end of a hollow fiber membrane for use in a single header filtration module by dipping the end of the membrane into a low-viscosity light-curable adhesive and curing the adhesive. The invention further encompasses the resulting sealed hollow fiber membrane with a diameter that is only slightly larger than the diameter of the unsealed membrane.

5073263, Dec 17, 1991

Sep 21, 1990

7/586578

Carlos A. Fagundes - Lowell MA
Thomas C. McDermott - Lynn MA
David M. Colby - Medford MA

B01D 6108

21032183

An ultrafiltration module and method of constructing same is the subject of the present invention. The module comprises a permeate collector tube and one or more membrane leaves wound around the tube together with a feed channel spacer so as to present spaced layers of membrane leaves or envelopes that are contacted by fluid flowing axially through the module in the channel provided by the feed spacer screen. The feed spacer screen projects beyond the terminal ends of the leaves to present an open mesh outerwrap screen circumscribing the wound leaves. A plurality of restraining bands are provided in longitudinally spaced relationship along the length of the module. These bands are designed to hold the entire module assembly in tight spiral relationship. Preferably, the bands are constructed of heat shrinkable material and are thus secured in place and tightened by the application of heat. After the restraining bands are in place, a bypass screen also of open mesh configuration is wrapped around the outerwrap and the restraining bands and secured by overlapping it onto itself and fusing the overlapped portion.

2018022, Aug 9, 2018

Apr 3, 2018

15/944535

- Wilmington MA, US
David M. Colby - Wilmington MA, US
Manwinder Singh - Wilmington MA, US

Koch Membrane Systems, Inc. - WILMINGTON MA

B01D 65/02
B01D 63/02
B01D 63/04
B01D 65/08
C02F 3/00
C02F 3/12

A membrane filter module configured to treat a liquid contained in a tank at an ambient pressure. The module may have a header, with a bundle containing a plurality of substantially vertical hollow fiber membranes, wherein a lower end of each hollow fiber membrane is fixed in the header. The module may also have a gasification device adapted to periodically generate a gaseous bubble and configured to release the gaseous bubble within the bundle. The module may further have an enclosure that substantially surrounds the bundle that extends from a lower region to an upper region of the membrane bundle, wherein the enclosure is configured to retain the liquid introduced into the enclosure such that the liquid surrounds the membrane bundle. The gaseous bubble has a cross-sectional area that corresponds with a cross-sectional area of the enclosure, such that the cross-sectional area of the gaseous bubble occupies substantially the entire cross-sectional area of the enclosure as it flows along the bundle.

2017017, Jun 22, 2017

Mar 6, 2015

15/123409

- Wilmington MA, US
David M. Colby - Wilmington MA, US
Manwinder Singh - Wilmington MA, US

Koch Membrane Systems, Inc. - Wilmington MA

B01D 65/08
B01D 63/02
B01D 63/04

An enclosure assembly configured to receive a plurality of fiber membranes configured to filter fluid may include an elongated tubular member including an elongated wall extending between first and second ends, and a removable hatch coupled to opposing side edges of the elongated wall, thereby forming a hollow enclosure having an interior. The interior of the elongated tubular member may be configured to receive a plurality of fiber membranes configured to filter fluid.

2017001, Jan 19, 2017

Sep 30, 2016

15/281699

- Wilmington MA, US
David Colby - Wilmington MA, US

Koch Membrane Systems, Inc. - Wilmington MA

B01D 63/02
B01D 69/08
B01D 61/14
B01D 65/00

The present invention is directed to a method of sealing the free end of a hollow fiber membrane for use in a single header filtration module by dipping the end of the membrane into a low-viscosity light-curable adhesive and curing the adhesive. The invention further encompasses the resulting sealed hollow fiber membrane with a diameter that is only slightly larger than the diameter of the unsealed membrane.

2016022, Aug 4, 2016

Apr 8, 2016

15/094813

- Wilmington MA, US
David M. Colby - Wilmington MA, US
Manwinder Singh - Wilmington MA, US

Koch Membrane Systems, Inc. - Wilmington MA

B01D 65/02
B01D 63/04
B01D 63/02

A membrane filter module configured to treat a liquid contained in a tank at an ambient pressure. The module may have a header, with a bundle containing a plurality of substantially vertical hollow fiber membranes, wherein a lower end of each hollow fiber membrane is fixed in the header. The module may also have a gasification device adapted to periodically generate a gaseous bubble and configured to release the gaseous bubble within the bundle. The module may further have an enclosure that substantially surrounds the bundle that extends from a lower region to an upper region of the membrane bundle, wherein the enclosure is configured to retain the liquid introduced into the enclosure such that the liquid surrounds the membrane bundle. The gaseous bubble has a cross-sectional area that corresponds with a cross-sectional area of the enclosure, such that the cross-sectional area of the gaseous bubble occupies substantially the entire cross-sectional area of the enclosure as it flows along the bundle.