Inventor · disambiguated record
Robert Pirker
Also filed as: PIRKER ROBERT
6 granted patents·49 citations·filing 1975–2017
80Inventor score
Top patents by PatentIndex Score
6 records- 0162US10343929B2Process for obtaining precipitated calcium carbonateOMYA INT AG·Filed 2017·Granted Jul 9, 2019·0 cites·19 claims
- 0261US4514235AFrog, in particular frog point, for rail crossing or rail switches as well as process for producing sameVOEST ALPINE AG·Filed 1983·Granted Apr 30, 1985·18 cites·3 claims
- 0360US9776884B2Process for obtaining precipitated calcium carbonateOMYA INT AG·Filed 2014·Granted Oct 3, 2017·0 cites·18 claims
- 0456US3977635ARailway switch for Vignoles railsVOEST AG·Filed 1975·Granted Aug 31, 1976·15 cites·8 claims
- 0538US4159090ARailway switch for vignoles railsVOEST AG·Filed 1977·Granted Jun 26, 1979·8 cites·4 claims
- 0636US4168817ARail switchVOEST AG·Filed 1977·Granted Sep 25, 1979·8 cites·9 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →