Inventor

Eduard F. B. Boeckmann

Inventor

Huntsville, AL, US

Overview

28→

Patents

1979–2008

Patent span

Electricity

Primary field (CPC H)

Patents· 28 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

H04Mprimary

H04MTelephonic communication51%

G05FSystems for regulating electric or magnetic variables8%

H02MApparatus for conversion between ac and ac, between ac and dc, or between dc and dc, and for use with mains or similar power supply systems8%

H03KPulse technique8%

H01CResistors5%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests5%

Y10TTechnical subjects covered by former us classification5%

G01KMeasuring temperature3%

G06FElectric digital data processing3%

H03HImpedance networks, e.g. resonant circuits3%

PatentTitleYear

7,368,831'Power converter feedback circuit'2008 6,597,157'Parallel phased switch control'2003 6,184,666'Buck converter with parallel switches'2001 5,852,372'Apparatus and method for signal handling on GTL-type buses'1998 4,719,648'Coin relay drive and switching circuit for paystation telephone instruments'1988 4,718,083'Differential receive booster amplifier for telephone instruments'1988 4,680,783'Telephone security violation detection device'1987 4,675,902'High performance telephone instrument with combination pulse and tone dialing capacity'1987 4,672,664'Telephone line monitor amplifier'1987 4,648,109'Light emitting diode message waiting lamp circuit'1987 4,634,959'Temperature compensated reference circuit'1987 4,625,128'Integrated circuit temperature sensor'1986 4,623,762'Static discharge snubber circuit for silicon controlled rectifier (SCR) type telephone hold devices'1986 4,600,876'Integrated bootstrap bias circuit'1986 4,591,666'Protection circuitry for subscriber\'s telephone circuit equipped with repertory memory'1986 4,555,597'Transient resistant key operated pulse generating calling device circuit'1985 4,529,845'Optical coupling interface circuit for telephone line ringing signal indication or detection'1985 4,529,843'Subscribers telephone hold circuit with automatic disconnect'1985 4,523,057'High gain cascode amplifier with negative feedback'1985 4,518,829'Two terminal microphone active load gain regulation circuit'1985 4,517,414'Hookswitch bounce resistant telephone hold-mute circuit'1985 4,454,385'Latching relay hold release circuit for a telephone instrument'1984 4,451,706'Telephone substation transmitter muting circuit'1984 4,447,674'Electronic hold release circuit'1984 4,440,981'Electronic hold circuit'1984 4,435,622'Latching relay hold circuit for a telephone instrument'1984 4,268,954'Method of making non-inductive cylindrical thin film resistor'1981 4,159,459'Non-inductive cylindrical thin film resistor'1979

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1979–1981Based in Hagerstown, MD, US· patent location history

1984Patents assigned to GTE AUTOMATIC ELECTRIC INC (5)· patent assignee history

1984–2008Based in Huntsville, AL, US· patent location history

1985–1988Patents assigned to GTE COMMUNICATION SYST (8)· patent assignee history

1985–1986Patents assigned to GTE BUSINESS COMM SYST (4)· patent assignee history

1987Patents assigned to GTE COMMUNICATION SYSTEMS INC (3)· patent assignee history

2001–2008Patents assigned to 3DLABS INC LTD (3)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
GTE COMMUNICATION SYST	8	1985–1988
GTE AUTOMATIC ELECTRIC INC	5	1984
GTE BUSINESS COMM SYST	4	1985–1986
3DLABS INC LTD	3	2001–2008
GTE COMMUNICATION SYSTEMS INC	3	1987

Locations

Location	Patents	Span
Huntsville, AL, US	26	1984–2008
Hagerstown, Maryland, US	2	1979–1981