Hyun J. Cho

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Tulsa, OK, US

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Patents Grantslast 30 patents

Information Patent Grant
Elastomeric disc for use on a pipeline pig
- Patent number 4,984,322
- Issue date Jan 15, 1991
- TDW Delaware, Inc.
- Hyun J. Cho
- B08 - CLEANING
Information Patent Grant
Locking rotary die cutting cover
- Patent number 4,867,024
- Issue date Sep 19, 1989
- TDW Delaware, Inc.
- Hyun J. Cho
- B26 - HAND CUTTING TOOLS CUTTING SEVERING
Information Patent Grant
Foam pig with textured surface
- Patent number 4,797,239
- Issue date Jan 10, 1989
- T. D. Williamson, Inc.
- Hyun J. Cho
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Unitary pig for use in a pipeline
- Patent number 4,413,370
- Issue date Nov 8, 1983
- T. D. Williamson, Inc.
- Larry D. Payne
- B08 - CLEANING