Inventor · disambiguated record
Derk Van Der Scheer
Also filed as: DER SCHEER DERK VAN · VAN DER SCHEER DERK
8 granted patents·69 citations·filing 1977–1988
84Inventor score
Top patents by PatentIndex Score
8 records- 0178US4354215ASelective safety device for the protection of a power distribution systemHAZEMEIJER BV·Filed 1980·Granted Oct 12, 1982·39 cites·6 claims
- 0252US5006681ALeaf spring system and an electric switch provided with such a leaf spring systemHOLEC SYST & COMPONENTEN·Filed 1988·Granted Apr 9, 1991·10 cites·17 claims
- 0346US4536735ACurrent limiting high voltage fuse assemblyHAZEMEIJER BV·Filed 1984·Granted Aug 20, 1985·6 cites·11 claims
- 0443US4172241AElectromagnetic actuation device comprising a magnetic holding mechanism, particularly for the actuation of high-speed circuit breakersHAZEMEIJER BV·Filed 1977·Granted Oct 23, 1979·5 cites·3 claims
- 0535US4542364AEnd cap for an electric high voltage fuseHAZEMEIJER BV·Filed 1984·Granted Sep 17, 1985·3 cites·17 claims
- 0634US4562320ACurrent-limiting deviceHAZEMEIJER BV·Filed 1980·Granted Dec 31, 1985·3 cites·6 claims
- 0726US4319210ACurrent limiting switch capable of rapid circuit breakingHAZEMEIJER BV·Filed 1980·Granted Mar 9, 1982·0 cites·7 claims
- 0824US4935711AElectromagnetic switchHOLEC SYST & COMPONENTEN·Filed 1988·Granted Jun 19, 1990·3 cites·37 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →