Kevin Michael Knebel, 6712623 Kiowa Rd UNIT 3, Apple Valley, CA 92308

2003002, Feb 6, 2003

Sep 25, 2002

10/254713

Tom Muzik - Thousand Oaks CA, US
Kevin Knebel - Simi Valley CA, US
Alex Vinarov - Moorpark CA, US

PTI Advanced Filtration, Inc.

B01D027/06

210/457000, 210/490000, 210/493100, 210/484000

The present invention relates to a novel filter element having a septum with a staged pleating that repeats a pleating sequence having a major (longest) pleat, a minor (shortest) pleat and at least one intermediate pleat therebetween. The intermediate pleat(s) have pleat heights that are evenly distributed within the range of pleat heights bounded by the pleat height of the minor pleat and the pleat height of the major pleat. In two particular embodiments of the invention, the pleat height ratios of the major, intermediate and minor pleats are 3:2:1 and 4:3:2:1. In an filter element, the pleated septum may be held between an inner core and an outer guard. The tip of the major pleat in each pleating sequence may be in contact with the inner core of the filter element. The septum may also include drainage layers on upstream and downstream of the filter material layer.

2005004, Mar 3, 2005

Oct 13, 2004

10/962626

Tom Muzik - Thousand Oaks CA, US
Kevin Knebel - Simi Valley CA, US
Alex Vinarov - Moorpark CA, US

PTI ADVANCED FILTRATION, INC. - Oxnard CA

B01D029/21

210493100

The present invention relates to a novel filter element having a septum with a staged pleating that repeats a pleating sequence having a major (longest) pleat, a minor (shortest) pleat and at least one intermediate pleat therebetween. The intermediate pleat(s) have pleat heights that are evenly distributed within the range of pleat heights bounded by the pleat height of the minor pleat and the pleat height of the major pleat. In two particular embodiments of the invention, the pleat height ratios of the major, intermediate and minor pleats are 3:2:1 and 4:3:2:1. In an filter element, the pleated septum may be held between an inner core and an outer guard. The tip of the major pleat in each pleating sequence may be in contact with the inner core of the filter element. The septum may also include drainage layers on upstream and downstream of the filter material layer.

6179131, Jan 30, 2001

Jun 25, 1998

9/104236

Thomas A. Muzik - Thousand Oaks CA
Kevin J. Knebel - Simi Valley CA

PTI Technologies, Inc. - Newbury Park CA

B01D 2708
B01D 3530

210437

A fusion-welded thermoplastic assembly and a method of fabricating the same includes first and second thermoplastic members fusion-welded together using a third thermoplastic fusion element. The first and second thermoplastic members and the thermoplastic fusion element are heated to a molten state using an infrared heater, and the molten fusion element is fused to each of the first and second thermoplastic elements. Prior to being connected by the fusion element, the first and second thermoplastic members are either brought into contact with one another or is held in such a way that they can be connected to each other using the third thermoplastic fusion element.