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Mack McDougald
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Ochlocknee, GA, US
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last 30 patents
Information
Patent Grant
Air scour/backwash apparatus for celless traveling bridge filter
Patent number
6,093,329
Issue date
Jul 25, 2000
United States Filter Corporation
Mack McDougald
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Sealing shoe for celless travelling bridge filter
Patent number
5,792,359
Issue date
Aug 11, 1998
U.S. Filter Corporation
Mack McDougald
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Control method and apparatus for backwash of filter media bed based...
Patent number
5,759,412
Issue date
Jun 2, 1998
United States Filter Corporation
Mack McDougald
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Method for sealing a traveling bridge filter backwash shoe
Patent number
5,599,459
Issue date
Feb 4, 1997
Davis Water & Waste Industries, Inc.
Mack McDougald
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Traveling bridge filter system and associated underdrain
Patent number
5,554,281
Issue date
Sep 10, 1996
Davis Water & Waste Industries, Inc.
Mack D. McDougald
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Method for sealing a traveling bridge filter backwash shoe
Patent number
5,545,334
Issue date
Aug 13, 1996
Davis Water & Waste Industries, Inc.
Mack McDougald
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Backwash/rewash traveling bridge filter and related process
Patent number
5,476,584
Issue date
Dec 19, 1995
Davis Water & Waste Industries, Inc.
Mack McDougald
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Apparatus for sealing a traveling bridge filter backwash shoe
Patent number
5,431,809
Issue date
Jul 11, 1995
Davis Water & Waste Industries, Inc.
Mack McDougald
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information
Patent Grant
Combined air/water backwash in a travelling bridge filter
Patent number
5,401,405
Issue date
Mar 28, 1995
Davis Water & Waste Industries, Inc.
Mack D. McDougald
B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL