Matthew C. Ankrom

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Findlay, OH, US

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Patents Grantslast 30 patents

Information Patent Grant
Pipe structure and method of manufacture
- Patent number 6,660,199
- Issue date Dec 9, 2003
- Hancor, Inc.
- Roger Lee Siferd
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Apparatus for forming a reinforcing structure on an end of a pipe
- Patent number 6,565,350
- Issue date May 20, 2003
- Hancor, Inc.
- Roger Lee Siferd
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Pipe structure and method of manufacture
- Patent number 6,199,592
- Issue date Mar 13, 2001
- Hancor, Inc.
- Roger Lee Siferd
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
Pipe structure and method of manufacture
- Publication number 20040041302
- Publication date Mar 4, 2004
- Roger Lee Siferd
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Application
Pipe structure and method of manufacture
- Publication number 20010013673
- Publication date Aug 16, 2001
- Roger Lee Siferd
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL