Inventor
SCHWENGER RALF
DE20 patents
⚠️ This page may combine multiple inventors who share the name “SCHWENGER RALF”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HEAD TECHNOLOGY GMBH
11 patentsUS9302159B2Apr 5, 2016
Racket for ball games having sound
HEAD TECHNOLOGY GMBH3 citations72
US10729943B2Aug 4, 2020
Grommet and grommet strip for ball game racket
HEAD TECHNOLOGY GMBH2 citations71
US12226677B2Feb 18, 2025
Ball game racket frame and method for manufacturing a ball game racket
HEAD TECHNOLOGY GMBH0 citations62
US11679308B2Jun 20, 2023
Ball game racket frame
HEAD TECHNOLOGY GMBH0 citations61
US10369423B2Aug 6, 2019
Ball game racket with magnesium bridge
HEAD TECHNOLOGY GMBH1 citations61
US8007380B2Aug 30, 2011
Racket with moveably mounted bridge
HEAD TECHNOLOGY GMBH2 citations61
US11521367B2Dec 6, 2022
Characterization of a ball game racket string pattern
HEAD TECHNOLOGY GMBH0 citations55
US8968125B2Mar 3, 2015
Tennis racket
HEAD TECHNOLOGY GMBH1 citations51
US11857855B2Jan 2, 2024
Characterization of a ball game racket frame
HEAD TECHNOLOGY GMBH0 citations47
US10143897B2Dec 4, 2018
Bridge for a ball game racket
HEAD TECHNOLOGY GMBH0 citations47
US9855471B2Jan 2, 2018
Grommet strip
HEAD TECHNOLOGY GMBH1 citations47