Tadao Yoshizawa

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Ishizukita, JP

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Patents Grantslast 30 patents

Information Patent Grant
Molding device for forming a socket end on a plastic pipe
- Patent number 4,412,802
- Issue date Nov 1, 1983
- Kubota Ltd.
- Ryozo Ohta
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Method of forming a socket end on a plastic pipe and a molding devi...
- Patent number 4,279,853
- Issue date Jul 21, 1981
- Kubota Ltd.
- Ryozo Ohta
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
Information Patent Grant
Flexible plastic pipe joint
- Patent number 4,275,909
- Issue date Jun 30, 1981
- Kubota Ltd.
- Tadao Yoshizawa
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Method of molding a socket part on a synthetic resinous pipe end
- Patent number 4,135,961
- Issue date Jan 23, 1979
- Kubota, Ltd.
- Tadao Yoshizawa
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL