Inventor

Robert V. Burns

Inventor

Phoenix, AZ, US

Overview

11→

Patents

1980–1992

Patent span

Electricity

Primary field (CPC H)

Patents· 11 as inventor

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

H04Mprimary

H04MTelephonic communication67%

H02HEmergency protective circuit arrangements7%

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 systems7%

H03BGeneration of oscillations, directly or by frequency-changing, by circuits employing active elements which operate in a non-switching manner7%

H03FAmplifiers7%

Y02DClimate change mitigation technologies in information and communication technologies [ict], i.e. information and communication technologies aiming at the reduction of their own energy use7%

PatentTitleYear

5,121,069'Low frequency sinewave generator'1992 5,001,748'Ringing signal generator'1991 4,965,692'Overload detector and protection circuit'1990 4,962,527'Series ringing signal generator'1990 4,924,511'Ring signal generator for generating ring signals of different frequencies and power levels in response to user selection'1990 4,908,857'Isolated drive circuit'1990 4,685,130'Subscriber line circuit having an improved loop current supply circuit'1987 4,677,667'Subscriber line circuit having improved AC impedance matching'1987 4,674,117'Subscriber line circuit having an improved offhook supervision circuit'1987 4,201,897'Ringing voltage transfer circuit'1980 4,186,275'Initial rate override circuit'1980

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1980Patents assigned to GTE AUTOMATIC ELECTRIC LAB INC (2)· patent assignee history

1980Based in Abbott Park, IL, US· patent location history

1980Based in Tinley Park, IL, US· patent location history

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

1987–1992Based in Phoenix, AZ, US· patent location history

1990–1992Patents assigned to SIEMENS TRANSMISSION SYST (6)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
SIEMENS TRANSMISSION SYST	6	1990–1992
GTE COMMUNICATION SYST	3	1987
GTE AUTOMATIC ELECTRIC LAB INC	2	1980

Locations

Location	Patents	Span
Phoenix, AZ, US	9	1987–1992
Abbott Park, Illinois, US	1	1980
Tinley Park, Illinois, US	1	1980