Inventor
NIWA KUNIO
JP25 patents
⚠️ This page may combine multiple inventors who share the name “NIWA KUNIO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SUMITOMO RUBBER IND
13 patentsUS6335100B1Jan 1, 2002
Structural material and process for its production
SUMITOMO RUBBER IND42 citations92
US5424021AJun 13, 1995
Method of making a shock resistant tool comprising a fiber reinforced cyclopentadiene resin matrix
SUMITOMO RUBBER IND27 citations92
US6688997B2Feb 10, 2004
Racket with reduced yoke rigidity
SUMITOMO RUBBER IND12 citations73
US6663514B2Dec 16, 2003
Racket with vibration damping yoke
SUMITOMO RUBBER IND12 citations73
US5102729AApr 7, 1992
Speaker diaphragm
SUMITOMO RUBBER IND16 citations73
US11492463B2Nov 8, 2022
Rubber composition for tennis ball and tennis ball
SUMITOMO RUBBER IND2 citations72
US11078348B2Aug 3, 2021
Rubber composition for tennis ball
SUMITOMO RUBBER IND2 citations72
US5082437AJan 21, 1992
Reaction injection machine utilizing a plurality of reactant liquids
SUMITOMO RUBBER IND9 citations71
US5114145AMay 19, 1992
Tennis racket frame
SUMITOMO RUBBER IND5 citations62
US10940369B2Mar 9, 2021
Rubber composition for hollow ball and hollow ball
SUMITOMO RUBBER IND0 citations61
US12319845B2Jun 3, 2025
Aqueous adhesive for rubber and aqueous adhesive for ball
SUMITOMO RUBBER IND0 citations60
USD1096402SOct 7, 2025
Lid for a container
SUMITOMO RUBBER IND0 citations54
US11618813B2Apr 4, 2023
Rubber composition for hollow ball and hollow ball
SUMITOMO RUBBER IND0 citations51
SRI SPORTS LTD
6 patentsUS7712231B2May 11, 2010
Shoe
SRI SPORTS LTD42 citations91
US7273430B2Sep 25, 2007
Tennis racket frame
SRI SPORTS LTD10 citations83
US7431673B2Oct 7, 2008
Racket
SRI SPORTS LTD7 citations73
US7137912B2Nov 21, 2006
Tennis racket
SRI SPORTS LTD7 citations73
US7059981B2Jun 13, 2006
Racket frame
SRI SPORTS LTD7 citations73
US7074142B2Jul 11, 2006
Racket frame
SRI SPORTS LTD4 citations62
HITACHI LTD
3 patentsUS5673083ASep 30, 1997
Semiconductor device and video camera unit having the same and method for manufacturing the same
HITACHI LTD119 citations97
US5400072AMar 21, 1995
Video camera unit having an airtight mounting arrangement for an image sensor chip
HITACHI LTD153 citations96
US5274456ADec 28, 1993
Semiconductor device and video camera unit using it and their manufacturing method
HITACHI LTD99 citations94