Perialwar S Regunathan

6337014, Jan 8, 2002

Dec 30, 1999

09/475853

Perialwar Regunathan - Wheaton IL
Marcus Donald McLeod - Westmont IL

United States Filter Corporation - Palm Desert CA

B01D 2700

210232, 210238, 2104163, 210444

A button for providing a physical and sealing connection between a septum and an outlet stack of a water treatment cartridge having an opening. The button includes a first end, a second end opposite the first end, and a central portion which connects the first end to the second end. Located on the first end, there is a plurality of flexible locking members, configured for being inserted into the opening. To attach the button to the outlet stack, the locking members lockingly engage the outlet stack. The central portion has an annular groove provided with an O-ring. The O-ring facilitates a sealed connection between the button and the outlet stack. The button is connected to the septum by the use of either a washer and nonsolvent glue or heat staking.

47594748, Jul 26, 1988

Jun 24, 1985

6/747906

Perialwar Regunathan - Wheaton IL
John W. Tadlock - West Chicago IL
Gregory L. Johnson - Wheaton IL

Everpure, Inc. - Westmont IL

B01D 2700

222189

An improved fluid dispensing system for use in dispensing beverages including unitary fluid filter cartridge adapted to be immersed in fluid to be dispensed, the fluid filter cartridge including a cannister having inlet and outlet openings in the lower end thereof, a filter septum in the filter cartridge connected to the outlet, adsorptive material disposed in the cartridge, a check valve controlled vent opening in the upper end of the cannister, and a riser stack connected to the check valve controlled vent opening.

48571890, Aug 15, 1989

Oct 13, 1988

7/257338

Jack W. Thomsen - La Grange Park IL
Perialwar Regunathan - Wheaton IL
John W. Tadlock - West Chicago IL

Everpure, Inc. - Westmont IL

B01D 2708
B01D 3530

210232

A filtering system for water treatment including a head member having inlet and outlet ports and a replaceable, disposable filter cartridge for insertion into the head member, the filter cartridge including a dual lug retaining system for retaining the filter cartridge in the head member, one of said lug retaining systems being disposed on the pressure vessel of the filter cartridge and the other of said lug retaining systems being disposed on the closure member of the filter cartridge.

49560867, Sep 11, 1990

Jun 8, 1989

7/363630

Jack W. Thomsen - LaGrange Park IL
Perialwar Regunathan - Wheaton IL
John W. Tadlock - West Chicago IL

Everpure, Inc. - Westmont IL

B01D 2708

210232

A filtering system for water treatment including a head member having inlet and outlet ports and replaceable, disposable filter cartridge for insertion into the head member, the filter cartridge including a dual lug retaining system for retaining the filter cartridge in the head member, one of said lug retaining systems being disposed on the pressure vessel of the filter cartridge and the other of said lug retaining systems being disposed on the closure member of the filter cartridge.

46456015, Feb 24, 1987

Aug 31, 1984

6/645854

Perialwar Regunathan - Wheaton IL
Jack W. Thomsen - LaGrange IL

Everpure, Inc. - Westmont IL

B01D 1300

2104332

A reverse osmosis sytsem for water treatment including a head member adapted to be fixedly mounted in a fliud supply line, an integral disposable reverse osmosis unit inserted into said head member, said osmosis unit including a pressure vessel, an end member attached to said pressure vessel and a reverse osmosis membrane module disposed in said pressure vessel and operatively associated with said end member.

47707704, Sep 13, 1988

Sep 28, 1987

7/101503

Perialwar Regunathan - Wheaton IL
Dale A. Squier - Oswego IL
John W. Tadlock - West Chicago IL

Everpure, Inc. - Westmont IL

B01D 1300

210102

A water supply system for use in connection with a variety of water using equipment such, for example, as commercial ice makers and commercial steam cooking equipment wherein the water supply system utilizes a reverse osmosis unit thereby providing water of low mineral content to be used as product water in the equipment and at the same time utilizing the waste water generated from use of the reverse osmosis unit to provide cooling or condensing water for the same units to which the low mineral water is supplied.

45482276, Oct 22, 1985

Sep 15, 1983

6/532123

Perialwar Regunathan - Wheaton IL
John W. Tadlock - West Chicago IL
Dean J. Jarog - Villa Park IL

Everpure, Inc. - Westmont IL

B01D 1102

137268

A chemical feeder device for treatment of influent liquid and designed for relatively free maintenance being free of moving parts and including a head member to be disposed in a liquid supply line, a vessel detachably connected to the head member and a disposable, replaceable chemical feeder cartridge also attached to the head member and disposed inside the vessel, the cartridge being a unitary structure including pre-inserted chemical material, built-in capillaries, an inlet check valve. The device is designed to feed a concentrated chemical solution into a stream of flowing liquid at a constant, very low resulting chemical concentration independent of liquid pressure, flow rate and interruptions in flow.