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IPC Main Group
A63B 51/00

Stringing tennis, badminton or like rackets; Strings therefor; Maintenance of racket strings

Introduced: September 1968

Last revised: January 2015

Classification Context

Section:
HUMAN NECESSITIES
Class:
SPORTS; GAMES; AMUSEMENTS
Subclass:
APPARATUS FOR PHYSICAL TRAINING, GYMNASTICS, SWIMMING, CLIMBING, OR FENCING; BALL GAMES; TRAINING EQUIPMENT

Related Keywords

BADMINTONBATTLEDORESRACKETS for ball gamesSTRINGING tennis racketsTENNIS rackets

9 direct subcodes

Child Classifications

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  • A63B 51/005 Devices for measuring the tension of strings
  • A63B 51/01 Pre-woven string-sets ready for insertion into a frame
  • A63B 51/015 String-aligning tools
  • A63B 51/06 Double-sided stringing
  • A63B 51/08 Diagonal stringing
  • A63B 51/12 Devices arranged in or on the racket for adjusting the tension of the strings

Top Applicants

Top 10 applicants by patent filingsfor class A63, 2013–2023, worldwide · Source: EPO PATSTAT

  1. SANKYO 23,899
  2. SANYO PRODUCT COMPANY 23,718
  3. DAIICHI SHOKAI COMPANY 13,338
  4. KYORAKU SANGYO 10,447
  5. UNIVERSAL ENTERTAINMENT CORPORATION 9,545
  6. SANEI R & D COMPANY 9,135
  7. SAMMY CORPORATION 7,126
  8. NEWGIN CORPORATION 5,651
  9. NETEASE 4,877
  10. HEIWA CORPORATION 3,938