Inventor

Christiaan A. Hartman

Inventor

San Jose, CA, US

Overview

2007–2021

Patent span

Electricity

Primary field (CPC H)

Patents· 90 as inventor

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

H04Wprimary

H04WWireless communication networks45%

H04LTransmission of digital information, e.g. telegraphic communication27%

Y02DClimate change mitigation technologies in information and communication technologies [ict], i.e. information and communication technologies aiming at the reduction of their own energy use17%

H04BTransmission4%

G06FElectric digital data processing2%

Y02BClimate change mitigation technologies related to buildings, e.g. housing, house appliances or related end-user applications2%

G01SRadio direction-finding1%

G06VImage or video recognition or understanding1%

G01RMeasuring electric variables1%

G06KGraphical data reading1%

PatentTitleYear

11,109,216Operation optimization for trigger-based instant communication2021 11,057,829Power saving for non-trigger-based ranging2021 11,035,884Multiple network probing2021 11,032,757Extended range networking2021 11,032,770Wake-up-radio discovery frame2021 11,032,768Wake-up-frame communication of application data2021 11,013,020Cancelable NAN schedule indication2021 10,999,798Efficient scan and service discovery2021 10,986,571Implicit power management mode and state transitions2021 10,966,053Ranging priority indication2021 10,959,174Wake-up radio with urgent-data criterion2021 10,924,993Wake-up frame with configurable payload2021 10,924,987FTM based secure ranging error recovery2021 10,911,190Access-category-based multi-user trigger frames2021 10,904,829Device-availability-based wake-up time schedule2021 10,893,482Selection of mode and data range in device-to-device close field communication2021 10,893,083Neighbor awareness networking datapath--scheduling, scheduler rank, and pre-datapath operation triggering2021 10,863,546Apparatus and method for adaptive contention window (ACW)2020 10,856,229Apparatus and method for wake-up radio transmission modes2020 10,849,168Single user multi-TID TXOP with QoS prioritization2020 10,841,924Basic bandwidth device on secondary channel2020 10,805,056Wireless station control of WLAN receive operating mode change2020 10,785,718Software-enabled access point with power saving2020 10,757,731Method and system for OFDMA random access2020 10,736,022Proxy assisted NAN and access point concurrent operation2020 10,681,759Paging schemes for peer-to-peer communications2020 10,638,423Group wake-up and keep-alive indication2020 10,615,918Multiuser block acknowledgment request2020 10,609,543Flexible BTLE TDS frame format for bi-directional service discovery2020 10,594,450Asymmetric OFDMA tone mapping and dynamic channel access using non-primary channels2020 10,588,168Peer-to-peer transmission pause indication2020 10,575,268NAN solicited synchronization2020 10,575,242Extended range networking2020 10,568,158Neighbor awareness networking datapath2020 10,567,186Multicast reliability enhancement2020 10,555,119Ranging priority indication2020 10,541,856NAN schedule migration2020 10,524,286Power saving using integrated CF-End indication2019 10,484,309Channel access based on uplink virtual queues2019 10,484,941Wake-up radio assisted WLAN power saving technologies2019 10,455,401Neighbor awareness networking datapath--reciprocation and coexistence2019 10,433,353Neighbor awareness networking service discovery proxy2019 10,397,767NAN further availability schedule indications2019 10,375,179Pre-association service discovery2019 10,356,819Spatial-reuse enhancement in RTS and CTS2019 10,341,065Access-category-based multi-user trigger frames2019 10,342,013Neighbor awareness networking ranging2019 10,321,423NAN data beacon2019 10,313,226Multicast in multi-user transmissions2019 10,306,640Basic bandwidth device on secondary channel2019 10,306,476Controlled spatial reuse in a WLAN2019 10,285,200Channel access policy control during wireless communication2019 10,285,040Neighbor awareness networking--accelerated discovery2019 10,277,424Uplink sounding in a wireless local area network2019 10,271,293Group formation within a synchronized hierarchy of peer-to-peer devices2019 10,271,180Neighbor awareness networking multicast support2019 10,264,602Controlled OFDMA random access2019 10,237,870Managing orthogonal frequency division multiple access uplink operations2019 10,231,258Neighbor awareness networking--schedule update2019 10,219,224WLAN system with opportunistic transitioning to a low power state for power management2019 10,212,574Neighbor awareness networking datapath--base scheduling, scheduler rank, and further service discovery2019 10,206,190Selection of synchronization stations in a peer-to-peer network environment2019 10,194,468Wireless channel reservation2019 10,172,146Wi-Fi and bluetooth coexistence2019 10,165,464NAN datapath quality of service support2018 10,142,985Opportunistic secondary channel access2018 10,129,826Implicit power management mode and state transitions2018 10,098,168Neighbor awareness networking datapath2018 10,091,725Outage delay indication and exploitation2018 10,070,273Multicast group management technique2018 10,034,224Dynamic and adaptive channel scanning2018 10,021,650WLAN system with opportunistic transitioning to a low power state for power management2018 10,015,151Method and apparatus for enabling service-configurable wireless connections2018 10,003,642Operating a cluster of peer-to-peer devices2018 9,998,535Method and apparatus for coordinating multiple peer-to-peer networks2018 9,955,505Peer-to-peer communications on restricted channels2018 9,954,642Spatial contention in dense wireless network2018 9,949,063Bluetooth low energy triggering NAN for further discovery and connection2018 9,906,600'Method and apparatus for initiating a high-power connection via a low-power interface'2018 9,846,741Method and apparatus for joining wireless service groups2017 9,848,332Method and apparatus for providing wireless service groups2017 9,848,026Simultaneous wireless connections with improved efficiency2017 9,572,105'WLAN system with opportunistic transitioning to a low power state for power management'2017 9,516,615'Selection of synchronization stations in a peer-to-peer network environment'2016 9,491,607'Wireless scan and advertisement in electronic devices'2016 9,485,778'WiFi real-time streaming and bluetooth coexistence'2016 9,473,574'Synchronization of devices in a peer-to-peer network environment'2016 9,100,892'Dynamic and adaptive channel scanning'2015 7,545,942'Security key distribution using key rollover strategies for wireless networks'2009 7,221,764'Security key distribution using key rollover strategies for wireless networks'2007

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2007–2009Patents assigned to AGERE SYSTEMS INC (2)· patent assignee history

2007–2009Based in Marietta, GA, US· patent location history

2015–2021Patents assigned to APPLE INC (88)· patent assignee history

2015–2021Based in San Jose, CA, US· patent location history

2016Patents assigned to DOMINGUEZ CHARLES F (1)· patent assignee history

2016Patents assigned to HARTMAN CHRISTIAAN A (1)· patent assignee history

2016Patents assigned to THOMAS TITO (1)· patent assignee history

2016–2021Based in Cupertino, CA, US· patent location history

2021Based in Mountain View, CA, US· patent location history

2021Based in Hartman, CA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
APPLE INC	88	2015–2021
AGERE SYSTEMS INC	2	2007–2009
DOMINGUEZ CHARLES F	1	2016
HARTMAN CHRISTIAAN Aself	1	2016
THOMAS TITO	1	2016

Locations

Location	Patents	Span
San Jose, California, US	75	2015–2021
Cupertino, California, US	8	2016–2021
Mountain View, California, US	4	2021
Marietta, Georgia, US	2	2007–2009
Hartman, California, US	1	2021