Robert D. Wingard

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Kent, OH, US

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Patents Grantslast 30 patents

Information Patent Grant
Programmable computer controlled reaction injection mixing head system
- Patent number 4,399,105
- Issue date Aug 16, 1983
- The Upjohn Company
- Peter Tilgner
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Particulate-containing foamed plastic
- Patent number 4,308,226
- Issue date Dec 29, 1981
- The Upjohn Company
- Robert D. Wingard
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Particulate-containing foamed plastic
- Patent number 4,307,062
- Issue date Dec 22, 1981
- The Upjohn Company
- Robert D. Wingard
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Universal coupling for reaction injection molding machine
- Patent number 4,108,606
- Issue date Aug 22, 1978
- The Upjohn Company
- Robert Dean Wingard
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Mixing head for a reaction injection molding machine
- Patent number 4,082,512
- Issue date Apr 4, 1978
- The Upjohn Company
- Robert Dean Wingard
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL