William N. Calland

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Mt. Vernon, OH, US

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Patents Grantslast 30 patents

Information Patent Grant
Multichannel wave screw with a slush channel barrier section
- Patent number 6,132,075
- Issue date Oct 17, 2000
- HPM Corporation
- John C. Medici
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Method for reconfiguring finishing rolls in a plastic sheet fabrica...
- Patent number 5,397,526
- Issue date Mar 14, 1995
- HPM Corporation
- James H. Perkins
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Triple channel wave screw
- Patent number 5,375,992
- Issue date Dec 27, 1994
- HPM Corporation
- George A. Kruder
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Triple channel wave screw
- Patent number 5,219,590
- Issue date Jun 15, 1993
- HPM Corporation
- George A. Kruder
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Apparatus for reconfiguring finishing rolls in a plastic sheet fabr...
- Patent number 4,997,358
- Issue date Mar 5, 1991
- HPM Corporation
- James H. Perkins
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL

Patents Applicationslast 30 patents

Information Patent Application
Release agent-free, multiple-use, polymer-based composite materials...
- Publication number 20060275600
- Publication date Dec 7, 2006
- Frank A. Vavra
- B32 - LAYERED PRODUCTS