Inventor

Leonard N. Schiff

Inventor

San Diego, CA, US

Overview

1980–2019

Patent span

Electricity

Primary field (CPC H)

Patents· 63 as inventor

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

H04Bprimary

H04BTransmission41%

H04WWireless communication networks16%

H04JMultiplex communication7%

H04NPictorial communication, e.g. television6%

H04LTransmission of digital information, e.g. telegraphic communication5%

H01QAntennas, i.e. radio aerials4%

Y02DClimate change mitigation technologies in information and communication technologies [ict], i.e. information and communication technologies aiming at the reduction of their own energy use4%

B64CAeroplanes3%

B64UUnmanned aerial vehicles [uav]3%

G08GTraffic control systems3%

PatentTitleYear

10,181,893Unmanned aerial vehicle (UAV) beam forming and pointing toward ground coverage area cells for broadband access2019 9,882,630'Overlaying an air to ground communication system on spectrum assigned to satellite systems'2018 9,866,312'Beam forming and pointing in a network of unmanned aerial vehicles (UAVs) for broadband access'2018 9,848,391High data rate aircraft to ground communication antenna system2017 9,800,320'Beam forming and pointing in a network of unmanned aerial vehicles (UAVs) for broadband access'2017 9,712,228'Beam forming and pointing in a network of unmanned aerial vehicles (UAVs) for broadband access'2017 9,571,180'Unmanned aerial vehicle (UAV) beam forming and pointing toward ground coverage area cells for broadband access'2017 9,319,172'Interference mitigation techniques for air to ground systems'2016 9,295,006'Real-time calibration of an air to ground communication system'2016 8,848,548'Internet radio broadcast using cellular'2014 8,744,344'Satellite communication system constituted with primary and back-up multi-beam satellites'2014 8,676,192'High data rate aircraft to ground communication antenna system'2014 8,358,971'Satellite-based programmable allocation of bandwidth for forward and return links'2013 8,325,591'Suppressing cross-polarization interference in an orthogonal communication link'2012 8,284,826'Synchronization of satellite and terrestrial broadcast ODFM signals'2012 8,121,536'Noise compensation in satellite communications'2012 8,107,436'Satellite diversity system, apparatus and method'2012 8,023,489'Burden sharing in satellite communications'2011 7,933,215'Synchronization on reverse link of mobile mode communications systems'2011 7,933,599'Techniques for facilitating communication handoffs'2011 7,920,543'Wireless broadband communications network using message diffusion architecture'2011 7,852,800'Reducing interference between users in a communications system through time scattering'2010 7,639,646'Satellite diversity system, apparatus and method'2009 7,633,895'Orthogonal code division multiple access on return link of satellite links'2009 7,599,657'Reducing service outages in a multibeam satellite system'2009 7,596,354'Optimizing polarization of forward link'2009 7,525,934'Mixed reuse of feeder link and user link bandwidth'2009 7,450,541'Access channel with constrained arrival times'2008 7,379,758'Satellite communication system constituted with primary and back-up multi-beam satellites'2008 7,333,469'Method for deep paging'2008 6,714,780'System and method for reducing call dropping rates in a multi-beam communication system'2004 6,671,250'Method for deep paging'2003 6,549,780'Method and apparatus for adjacent service area handoff in communication systems'2003 6,539,200'Method and apparatus for paging a user terminal within the sweet spot of a satellite'2003 6,449,463'Variable loop gain in double loop power control systems'2002 6,424,831'Apparatus and method for paging a user terminal in a satellite communication system'2002 6,339,611'Method and apparatus for cross polarized isolation in a communication system'2002 6,317,420'Feeder link spatial multiplexing in a satellite communication system'2001 6,298,242'Method and apparatus for reducing frame error rate through signal power adjustment'2001 6,233,456'Method and apparatus for adjacent coverage area handoff in communication systems'2001 6,208,858'System and method for reducing call dropping rates in a multi-beam communication system'2001 6,028,884'Method and apparatus for measuring nonlinear effects in a communication system'2000 6,005,855'Method and apparatus for providing variable rate data in a communications system using statistical multiplexing'1999 4,933,765'Enhanced TV system using transmitted error signals'1990 4,912,773'Communications system utilizing a pilot signal and a modulated signal'1990 4,745,474'Two resolution level DPCM system'1988 4,639,932'Clock rate spread spectrum'1987 4,636,586'Speakerphone with adaptive cancellation of room echoes'1987 4,630,283'Fast acquisition burst mode spread spectrum communications system with pilot carrier'1986 4,617,674'Synchronizing system for spread spectrum transmissions between small earth stations by satellite via an intermediate hop to a large earth station'1986 4,616,252'Sampled color difference signal processing system having a quadrature distortion reduction differentiator'1986 4,616,362'Logic for calculating bit error rate in a data communication system'1986 4,615,026'Digital FIR filters with enhanced tap weight resolution'1986 4,594,607'Demodulator for sampled chrominance signals including a Nyquist filter for recovering wideband I color difference signals'1986 4,587,661'Apparatus for synchronizing spread spectrum transmissions from small earth stations used for satellite transmission'1986 4,577,316'Synchronization system for a regenerative subtransponder satellite communication system'1986 4,554,679'Noise reduction system for a single sideband multiplex signal'1985 4,536,846'Distortion reducer for companded analog systems'1985 4,464,678'Time window key system for video scrambling'1984 4,434,440'FM/TV Transmission system'1984 4,403,255'FM/TV Automatic gain control system'1983 4,262,355'System for limiting intermodulation distortion of talkspurt signals'1981 4,221,934'Compandor for group of FDM signals'1980

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1980–1987Patents assigned to RCA CORP (17)· patent assignee history

1980–1981Based in Trenton, NJ, US· patent location history

1983–1990Based in Lawrenceville, NJ, US· patent location history

1986Based in Lawrence Township, NJ, US· patent location history

1986–1987Based in Mercer County, NJ, US· patent location history

1999–2018Patents assigned to QUALCOMM INC (38)· patent assignee history

1999–2019Based in San Diego, CA, US· patent location history

2012–2018Patents assigned to SCHIFF LEONARD N (10)· patent assignee history

2012–2018Patents assigned to AMES WILLIAM G (6)· patent assignee history

2012–2018Patents assigned to JALALI AHMAD (6)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
QUALCOMM INC	38	1999–2018
RCA CORP	17	1980–1987
SCHIFF LEONARD Nself	10	2012–2018
AMES WILLIAM G	6	2012–2018
JALALI AHMAD	6	2012–2018

Locations

Location	Patents	Span
San Diego, California, US	43	1999–2019
Lawrenceville, New Jersey, US	13	1983–1990
Lawrence Township, New Jersey, US	3	1986
Mercer County, New Jersey, US	2	1986–1987
Trenton, New Jersey, US	2	1980–1981