Masanori Takatsuka

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Hamamatsu, JP

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Patents Grantslast 30 patents

Information Patent Grant
Tennis racket
- Patent number 5,470,062
- Issue date Nov 28, 1995
- Yamaha Corporation
- Masanori Takatsuka
- A63 - SPORTS GAMES AMUSEMENTS
Information Patent Grant
Tennis racket with longitudinal strings different in tensile force...
- Patent number 5,462,274
- Issue date Oct 31, 1995
- Yamaha Corporation
- Masanori Takatsuka
- A63 - SPORTS GAMES AMUSEMENTS
Information Patent Grant
Tennis racket
- Patent number 5,310,179
- Issue date May 10, 1994
- Yamaha Corporation
- Masanori Takatsuka
- A63 - SPORTS GAMES AMUSEMENTS
Information Patent Grant
Hollow tennis racket frame with matched frequency of vibration
- Patent number 5,211,398
- Issue date May 18, 1993
- Yamaha Corporation
- Tetsuyuki Awano
- A63 - SPORTS GAMES AMUSEMENTS
Information Patent Grant
Racket frame
- Patent number 4,861,029
- Issue date Aug 29, 1989
- Yamaha Corp.
- Masanori Takatsuka
- A63 - SPORTS GAMES AMUSEMENTS
Information Patent Grant
Vibration absorber for a racket
- Patent number 4,811,947
- Issue date Mar 14, 1989
- Yamaha Corporation
- Masanori Takatsuka
- A63 - SPORTS GAMES AMUSEMENTS