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Valdis Ivansons
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Wilmington, DE, US
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Patents Grants
last 30 patents
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Patent Grant
Ion generator in connect/disconnect of plastic tubes
Patent number
5,632,852
Issue date
May 27, 1997
Denco, Inc.
Ivars V. Ivansons
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Wafer for use in the selective connecting and disconnecting of plas...
Patent number
5,525,186
Issue date
Jun 11, 1996
Denco, Inc.
Ivars V. Ivansons
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Total containment welding of plastic tubes
Patent number
5,397,425
Issue date
Mar 14, 1995
Denco, Inc.
Ivars V. Ivansons
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Package for a wafer for the welding and/or cutting of plastic tubes
Patent number
D355848
Issue date
Feb 28, 1995
Denco, Inc.
Ivars V. Ivansons
D09 - Packages and containers for goods
Information
Patent Grant
Total containment device for connect/disconnect of plastic tubes
Patent number
5,279,685
Issue date
Jan 18, 1994
Denco, Inc.
Ivars V. Ivansons
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information
Patent Grant
Total containment welding of plastic tubes
Patent number
5,244,522
Issue date
Sep 14, 1993
Denco Inc.
Dudley W. C. Spencer
B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL