Inventor · disambiguated record
Mathis Halder
Also filed as: HALDER MATHIS
13 granted patents·291 citations·filing 1979–1989
93Inventor score
Top patents by PatentIndex Score
13 records- 0194US4513274ACurrent transformer for measuring instrumentsLANDIS & GYR AG·Filed 1983·Granted Apr 23, 1985·64 cites·6 claims
- 0284US4853620ACircuit arrangement comprising multiplier circuits to find the sum of electrical power outputs for application in multi-phase electricity metersLANDIS & GYR AG·Filed 1988·Granted Aug 1, 1989·49 cites·4 claims
- 0375US4434400ACircuit for supervising an electronic electricity meterLANDIS & GYR AG·Filed 1981·Granted Feb 28, 1984·31 cites·19 claims
- 0475US4362990ACurrent- and voltage-measurement transducerLANDIS & GYR AG·Filed 1980·Granted Dec 7, 1982·27 cites·16 claims
- 0568US4685138ASystem for the display and scanning of the contents of a counter equipped with counting wheelsLANDIS & GYR AG·Filed 1984·Granted Aug 4, 1987·24 cites·8 claims
- 0665US4234872ACircuit arrangement for a keyboardLANDIS & GYR AG·Filed 1979·Granted Nov 18, 1980·16 cites·4 claims
- 0764US4337438APulse-width modulator circuitLANDIS & GYR AG·Filed 1980·Granted Jun 29, 1982·13 cites·7 claims
- 0862US4749941ACircuit arrangement for a meter for measuring two electrical quantitiesLANDIS & GYR AG·Filed 1987·Granted Jun 7, 1988·23 cites·6 claims
- 0957US4864223AMeasuring transformer to measure the current flowing in an electric conductorLANDIS & GYR AG·Filed 1988·Granted Sep 5, 1989·16 cites·9 claims
- 1052US4496932ACurrent divider for current measurement in conjunction with a measurement transducerLANDIS & GYR AG·Filed 1984·Granted Jan 29, 1985·11 cites·10 claims
- 1149US4628251APrecision measurement voltage transducerLANDIS & GYR AG·Filed 1984·Granted Dec 9, 1986·8 cites·19 claims
- 1239US4594547AMark-space amplitude modulator for measuring reactive power consumption or reactive energy consumptionLANDIS & GYR AG·Filed 1983·Granted Jun 10, 1986·6 cites·6 claims
- 1332US5072173APhase detector for mark/space modulated signalsLANDIS & GYR BETRIEBS AG·Filed 1989·Granted Dec 10, 1991·3 cites·8 claims
Join the waitlist — get patent alerts
Get an alert when Mathis Halder files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →