Inventor · disambiguated record
Sigurd G. Waaben
Also filed as: WAABEN SIGURD G · WAABEN SIGURD GUNTHER
9 granted patents·290 citations·filing 1976–1984
91Inventor score
Top patents by PatentIndex Score
9 records- 0194US4519024ATwo-terminal transistor rectifier circuit arrangementAT & T BELL LAB·Filed 1983·Granted May 21, 1985·83 cites·16 claims
- 0290US4056719ATwo-way telephone transmission system utilizing opto-couplersBELL TELEPHONE LABOR INC·Filed 1976·Granted Nov 1, 1977·63 cites·11 claims
- 0387US4319144ASingle polarity circuitBELL TELEPHONE LABOR INC·Filed 1980·Granted Mar 9, 1982·42 cites·8 claims
- 0478US4137428AOptically actuated bidirectional semiconductor switchBELL TELEPHONE LABOR INC·Filed 1977·Granted Jan 30, 1979·17 cites·14 claims
- 0574US4228323AVariable loop length compensated barrier circuitBELL TELEPHONE LABOR INC·Filed 1979·Granted Oct 14, 1980·16 cites·16 claims
- 0672US4190747ASignal corrected optocoupled deviceBELL TELEPHONE LABOR INC·Filed 1978·Granted Feb 26, 1980·23 cites·5 claims
- 0762US4440985AApparatus for determining the location of faults in a transmission lineBELL TELEPHONE LABOR INC·Filed 1982·Granted Apr 3, 1984·13 cites·14 claims
- 0858US4631355ATelautograph systemAT & T BELL LAB·Filed 1984·Granted Dec 23, 1986·22 cites·8 claims
- 0954US4349776ADC-to-DC Converters utilizing FET devicesBELL TELEPHONE LABOR INC·Filed 1980·Granted Sep 14, 1982·11 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →