Inventor
ZELLWEGER DANIEL
CH5 patents
⚠️ This page may combine multiple inventors who share the name “ZELLWEGER DANIEL”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
RICO SICHERHEITSTECHNIK AG
4 patentsUS12523305B2Jan 13, 2026
Ball valve, in particular for explosion isolation in process pipelines
RICO SICHERHEITSTECHNIK AG0 citations39
US11946553B2Apr 2, 2024
Explosion protection valve for decoupling system parts or workpieces, comprising a bearing assembly for the valve closing body
RICO SICHERHEITSTECHNIK AG0 citations37
US11732808B2Aug 22, 2023
Explosion protection valve for decoupling system parts or workpieces, comprising a sealing ring
RICO SICHERHEITSTECHNIK AG0 citations37
US10066752B2Sep 4, 2018
Explosion-proof valve
RICO SICHERHEITSTECHNIK AG0 citations26