using special gas-impermeable layers

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A63B2039/022

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AHUMAN NECESSITIES A63Sports, games A63BAPPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING BALL GAMES TRAINING EQUIPMENT

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A63B2039/022using special gas-impermeable layers

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Patents Grantslast 30 patents

Information Patent Grant
Rubber composition for tennis ball
- Patent number 11,078,348
- Issue date Aug 3, 2021
- Sumitomo Rubber Industries, Ltd.
- Takehiko Hyodo
- A63 - SPORTS GAMES AMUSEMENTS
Information Patent Grant
Rubber composition for hollow ball and hollow ball
- Patent number 10,940,369
- Issue date Mar 9, 2021
- Sumitomo Rubber Industries, Ltd.
- Takehiko Hyodo
- C08 - ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-...
Information Patent Grant
Elastic spheroid structure
- Patent number 9,855,468
- Issue date Jan 2, 2018
- GATEWAY CORP.
- Sheng-Mou Huang
- A63 - SPORTS GAMES AMUSEMENTS
Information Patent Grant
Long life, low air permeable pressurized articles such as play balls
- Patent number 5,593,157
- Issue date Jan 14, 1997
- GenCorp Inc.
- William J. Koros
- A63 - SPORTS GAMES AMUSEMENTS

Patents Applicationslast 30 patents

Information Patent Application
METHOD FOR MAKING BOUNCING BALL WITH COLUMNS
- Publication number 20120263880
- Publication date Oct 18, 2012
- Chia-Yen Lin
- B29 - WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL