Inventor · disambiguated record
Donald H. Sandbrook
Also filed as: SANDBROOK DONALD H · SANDBROOK DONALD HARRY
27 granted patents·10 pending applications·189 citations·filing 1995–2025
96Inventor score
Top patents by PatentIndex Score
37 records- 0198US11151874B2Vehicle flow monitoring systemFROGPARKING LTD·Filed 2020·Granted Oct 19, 2021·8 cites·21 claims
- 0297US11821155B1Vehicle barrier gate systemFROGPARKING LTD·Filed 2022·Granted Nov 21, 2023·3 cites·22 claims
- 0397US11610487B2Vehicle presence detection systemFROGPARKING LTD·Filed 2022·Granted Mar 21, 2023·2 cites·20 claims
- 0497US10748424B2Vehicle presence detection systemFROGPARKING LTD·Filed 2019·Granted Aug 18, 2020·18 cites·26 claims
- 0597US10510250B2Vehicle presence detection systemFROGPARKING LTD·Filed 2019·Granted Dec 17, 2019·19 cites·37 claims
- 0697US10373493B1Vehicle presence detection systemFROGPARKING LTD·Filed 2018·Granted Aug 6, 2019·19 cites·35 claims
- 0797US10096247B1Vehicle presence detection systemFROGPARKING LTD·Filed 2018·Granted Oct 9, 2018·23 cites·22 claims
- 0896US11948458B2Vehicle flow monitoring systemFROGPARKING LTD·Filed 2023·Granted Apr 2, 2024·2 cites·20 claims
- 0996US11798414B2Vehicle flow monitoring systemFROGPARKING LTD·Filed 2022·Granted Oct 24, 2023·2 cites·20 claims
- 1096US11488475B2Vehicle flow monitoring systemFROGPARKING LTD·Filed 2021·Granted Nov 1, 2022·2 cites·20 claims
- 1196US10008116B1Vehicle presence detection systemFROGPARKING LTD·Filed 2017·Granted Jun 26, 2018·18 cites·23 claims
- 1295US11875679B2Vehicle presence detection systemFROGPARKING LTD·Filed 2023·Granted Jan 16, 2024·1 cites·20 claims
- 1395US9589465B2Vehicle presence detection systemFROGPARKING LTD·Filed 2016·Granted Mar 7, 2017·15 cites·20 claims
- 1494US11761256B2Vehicle barrier gate systemFROGPARKING LTD·Filed 2022·Granted Sep 19, 2023·2 cites·20 claims
- 1593US9373256B2Vehicle presence detection systemFROGPARKING LTD·Filed 2014·Granted Jun 21, 2016·21 cites·20 claims
- 1691US11279189B1Walking beam suspensionGREENTECH ROBOTICS LTD·Filed 2021·Granted Mar 22, 2022·4 cites·27 claims
- 1790US11377899B1Vehicle barrier gate systemSANDBROOK DONALD H·Filed 2021·Granted Jul 5, 2022·3 cites·37 claims
- 1890US2025095494A1Vehicle Presence Detection SystemFROGPARKING LTD·Filed 2024·Application pending·0 cites
- 1989US9704400B1Vehicle presence detection systemFROGPARKING LTD·Filed 2017·Granted Jul 11, 2017·6 cites·20 claims
- 2087US12243424B2Vehicle flow monitoring systemFROGPARKING LTD·Filed 2024·Granted Mar 4, 2025·0 cites·20 claims
- 2187US12165512B2Vehicle presence detection systemFROGPARKING LTD·Filed 2024·Granted Dec 10, 2024·0 cites·20 claims
- 2283US12213393B2Agricultural weed removal systemGREENTECH ROBOTICS LTD·Filed 2021·Granted Feb 4, 2025·1 cites·14 claims
- 2382US2025092734A1Vehicle Barrier Gate SystemFROGPARKING LTD·Filed 2024·Application pending·0 cites
- 2481US2025201122A1Vehicle Flow Monitoring SystemFROGPARKING LTD·Filed 2025·Application pending·0 cites
- 2579US12163370B2Vehicle barrier gate systemFROGPARKING LTD·Filed 2023·Granted Dec 10, 2024·0 cites·20 claims
- 2678US12195934B2Vehicle barrier gate systemFROGPARKING LTD·Filed 2023·Granted Jan 14, 2025·0 cites·20 claims
- 2778US11462108B2Vehicle presence detection systemFROGPARKING LTD·Filed 2021·Granted Oct 4, 2022·0 cites·20 claims
- 2874US11138881B2Vehicle presence detection systemFROGPARKING LTD·Filed 2020·Granted Oct 5, 2021·0 cites·20 claims
- 2965US2025176449A1Agricultural Weed Removal SystemGREENTECH ROBOTICS LTD·Filed 2025·Application pending·0 cites
- 3062US12295358B2System and method for autonomous detection of plant matter and selective action on plant matter in an agriculture fieldSeedSpider Ltd·Filed 2024·Granted May 13, 2025·0 cites·20 claims
- 3161US2024268244A1Agricultural Implement Tool for Undesired Plant RemovalGREENTECH ROBOTICS LTD·Filed 2023·Application pending·0 cites
- 3260US2025234853A1System and method for autonomous detection of plant matter and selective action on plant matter in an agriculture fieldSeedSpider Ltd·Filed 2025·Application pending·0 cites
- 3359US2015134454A1Vehicle Parking Event Initiated Promotional Material SystemFROGPARKING LTD·Filed 2013·Application pending·0 cites
- 3457US5873533AVertical axis metering device for a particulate material dispenserFiled 1995·Granted Feb 23, 1999·20 cites·14 claims
- 3546US2021264779A1Vehicle Identification SystemFROGPARKING LTD·Filed 2020·Application pending·0 cites
- 3646US2016049077A1Traffic Management SystemFROGPARKING LTD·Filed 2014·Application pending·0 cites
- 3745US2015179070A1Location-Based Vehicle Parking SystemFROGPARKING LTD·Filed 2013·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when Donald H. Sandbrook files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →