DIFF Subgroup
A63B 51/10 Reinforcements for stringing
Introduced: September 1968
Full Title
Stringing tennis, badminton or like rackets; Strings therefor; Maintenance of racket strings > Reinforcements for stringing
IPC and CPC are identically structured here. All 1 subcodes exist in both systems.
IPC defines codes here since 2015.
Child Classifications
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- A63B 51/11 Intermediate members for the cross-points of the strings since 2015 IPC+CPC Available in IPC and CPC
Top Applicants
Top Applicants (IPC)
Class A63,2013–2023, worldwide · Source: EPO PATSTAT
- SANKYO 23,899
- SANYO PRODUCT COMPANY 23,718
- DAIICHI SHOKAI COMPANY 13,338
- KYORAKU SANGYO 10,447
- UNIVERSAL ENTERTAINMENT CORPORATION 9,545
- SANEI R & D COMPANY 9,135
- SAMMY CORPORATION 7,126
- NEWGIN CORPORATION 5,651
- NETEASE 4,877
- HEIWA CORPORATION 3,938
Top Applicants (CPC)
Class A63,2013–2023, worldwide · Source: EPO PATSTAT
- NETEASE 4,324
- TENCENT TECHNOLOGY (SHENZHEN) COMPANY 3,255
- SONY INTERACTIVE ENTERTAINMENT JP 2,643
- TENCENT TECHNOLOGY (SHENZHEN) COMPANY CN 2,353
- UNIVERSAL CITY STUDIOS US 2,005
- KARSTEN MANUFACTURING CORPORATION US 1,883
- ACUSHNET COMPANY US 1,495
- MICROSOFT TECHNOLOGY LICENSING US 1,272
- NINTENDO COMPANY JP 1,260
- SONY CORPORATION JP 1,169