Inventor
KOJIMA RYOJI
JP35 patents
⚠️ This page may combine multiple inventors who share the name “KOJIMA RYOJI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SUMITOMO RUBBER IND
13 patentsUS10071598B2Sep 11, 2018
Studless winter tire
SUMITOMO RUBBER IND11 citations84
US8022121B2Sep 20, 2011
Rubber composition for studless tire and studless tire
SUMITOMO RUBBER IND13 citations84
US8022132B2Sep 20, 2011
Rubber composition for studless tire and studless tire
SUMITOMO RUBBER IND16 citations84
US10189974B2Jan 29, 2019
Tire
SUMITOMO RUBBER IND4 citations69
US7838583B2Nov 23, 2010
Rubber composition for cap tread and pneumatic tire having cap tread using same
SUMITOMO RUBBER IND2 citations63
US10336890B2Jul 2, 2019
Rubber composition for studless winter tires, and studless winter tire
SUMITOMO RUBBER IND1 citations62
US11261314B2Mar 1, 2022
Pneumatic tire
SUMITOMO RUBBER IND1 citations58
US7919560B2Apr 5, 2011
Rubber composition and studless tire obtained by using the rubber composition
SUMITOMO RUBBER IND0 citations52
US10967677B2Apr 6, 2021
Pneumatic tire
SUMITOMO RUBBER IND0 citations49
US10808082B2Oct 20, 2020
Method for kneading a polymer
SUMITOMO RUBBER IND0 citations44
US9657121B2May 23, 2017
Rubber composition for tire, tire member, method for producing biomass-derived rubber, and pneumatic tire
SUMITOMO RUBBER IND0 citations41
US10494515B2Dec 3, 2019
Process for preparing vulcanized rubber composition, vulcanized rubber composition and studless tire using same
SUMITOMO RUBBER IND0 citations37
US9879109B2Jan 30, 2018
Rubber composition for tires, tire member, and pneumatic tire
SUMITOMO RUBBER IND0 citations34
KOJIMA RYOJI
7 patentsUS9132698B2Sep 15, 2015
Rubber composition for studless tire and studless tire using the same
KOJIMA RYOJI11 citations83
US9695302B2Jul 4, 2017
Rubber composition for studless winter tires, and studless winter tire
KOJIMA RYOJI2 citations72
US8329799B2Dec 11, 2012
Rubber composition for studless tire and studless tire
KOJIMA RYOJI2 citations62
US8567462B2Oct 29, 2013
Rubber composition for studless tire and studless tire
KOJIMA RYOJI0 citations51
US8293844B2Oct 23, 2012
Rubber composition for cap tread and studless tire
KOJIMA RYOJI0 citations51
US9318353B2Apr 19, 2016
Method of manufacturing connection structure
KOJIMA RYOJI0 citations41
US8791197B2Jul 29, 2014
Rubber composition for winter tire, and winter tire
KOJIMA RYOJI0 citations41
HITACHI LTD
4 patentsUS4777499AOct 11, 1988
Method and apparatus for image recording
HITACHI LTD8 citations72
US4977415ADec 11, 1990
Electrostatic recording head, image recording apparatus, developing agent supplying device, display device and method of producing electrostatic recording head
HITACHI LTD4 citations60
US5144343ASep 1, 1992
Image recording method and apparatus
HITACHI LTD2 citations59
US5021810AJun 4, 1991
Printing machine
HITACHI LTD0 citations39