Inventor · disambiguated record
David Sandahl
Also filed as: SANDAHL DAVID
38 granted patents·8 pending applications·285 citations·filing 2001–2025
97Inventor score
Top patents by PatentIndex Score
46 records- 0195US9615946B2Prosthetic device, system and method for increasing vacuum attachmentOSSUR HF·Filed 2015·Granted Apr 11, 2017·21 cites·15 claims
- 0295US9486335B2Prosthetic device, system and method for increasing vacuum attachmentOSSUR HF·Filed 2015·Granted Nov 8, 2016·22 cites·15 claims
- 0394US9757256B2Pump mechanism for vacuum suspension systemOSSUR HF·Filed 2015·Granted Sep 12, 2017·26 cites·15 claims
- 0493US9072617B2Prosthetic device, system and method for increasing vacuum attachmentOSSUR HF·Filed 2013·Granted Jul 7, 2015·34 cites·18 claims
- 0593US9044348B2Prosthetic device, system and method for increasing vacuum attachmentOSSUR HF·Filed 2013·Granted Jun 2, 2015·33 cites·8 claims
- 0691US9889025B2Vacuum assisted suspension systemOSSUR HF·Filed 2015·Granted Feb 13, 2018·13 cites·6 claims
- 0791US9820873B2Vacuum suspension systemOSSUR HF·Filed 2016·Granted Nov 21, 2017·15 cites·13 claims
- 0891US9707106B2Adjustable seal system, seal component and method for using the sameOSSUR HF·Filed 2015·Granted Jul 18, 2017·16 cites·12 claims
- 0990US10512554B2Pump systemOSSUR ICELAND EHF·Filed 2017·Granted Dec 24, 2019·4 cites·7 claims
- 1089US11771572B2Prosthetic feet having heel height adjustabilityOESSUR ICELAND EHF·Filed 2020·Granted Oct 3, 2023·2 cites·20 claims
- 1189US9198780B2Vacuum assisted suspension systemössur hf·Filed 2013·Granted Dec 1, 2015·26 cites·7 claims
- 1287US10821007B2Prosthetic feet having heel height adjustabilityOESSUR ICELAND EHF·Filed 2017·Granted Nov 3, 2020·8 cites·10 claims
- 1386US10413429B2Pump systemOSSUR ICELAND EHF·Filed 2016·Granted Sep 17, 2019·7 cites·10 claims
- 1485US11357647B2Pump systemOSSUR ICELAND EHF·Filed 2019·Granted Jun 14, 2022·5 cites·19 claims
- 1584US9603726B2Adjustable seal system, seal component and method for using the sameOSSUR HF·Filed 2014·Granted Mar 28, 2017·16 cites·14 claims
- 1683US10034782B2Variable stiffness prosthetic footOESSUR HF·Filed 2015·Granted Jul 31, 2018·5 cites·23 claims
- 1783US9364348B2Vacuum suspension systemOSSUR HF·Filed 2014·Granted Jun 14, 2016·14 cites·10 claims
- 1881US11311997B2Adapter for a rotary deviceOSSUR ICELAND EHF·Filed 2020·Granted Apr 26, 2022·1 cites·15 claims
- 1981US2023087706A1Prosthetic device, system and method for increasing vacuum attachmentOSSUR HF·Filed 2022·Application pending·0 cites
- 2080US11446166B2Prosthetic foot with removable flexible membersOESSUR ICELAND EHF·Filed 2019·Granted Sep 20, 2022·3 cites·25 claims
- 2179USRE50679EProsthetic device, system and method for increasing vacuum attachmentOSSUR HF·Filed 2021·Granted Dec 2, 2025·0 cites·36 claims
- 2277US10624765B2Variable stiffness prosthetic footOESSUR ICELAND EHF·Filed 2018·Granted Apr 21, 2020·2 cites·21 claims
- 2377US9877851B2Adjustable seal system, seal component and method for using the sameOSSUR HF·Filed 2014·Granted Jan 30, 2018·7 cites·16 claims
- 2476US11141294B2Prosthetic device, system and method for increasing vacuum attachmentOSSUR HF·Filed 2018·Granted Oct 12, 2021·1 cites·16 claims
- 2574US12220329B2Pump systemOSSUR ICELAND EHF·Filed 2022·Granted Feb 11, 2025·0 cites·16 claims
- 2673US2025376352A1Tensioning deviceOSSUR ICELAND EHF·Filed 2025·Application pending·0 cites
- 2772US12004972B2Pump systemOSSUR ICELAND EHF·Filed 2022·Granted Jun 11, 2024·0 cites·19 claims
- 2872US11376139B2Pump systemOSSUR ICELAND EHF·Filed 2019·Granted Jul 5, 2022·1 cites·6 claims
- 2972US10405999B2Prosthetic joint with cam locking mechanismOSSUR HF·Filed 2015·Granted Sep 10, 2019·2 cites·20 claims
- 3071US2024041621A1Prosthetic feet having heel height adjustabilityOESSUR ICELAND EHF·Filed 2023·Application pending·0 cites
- 3170US12502288B2Prosthetic foot with removable flexible membersOESSUR ICELAND EHF·Filed 2022·Granted Dec 23, 2025·0 cites·20 claims
- 3270US2025134679A1Pump systemOSSUR ICELAND EHF·Filed 2025·Application pending·0 cites
- 3367US11696842B2Vacuum assisted suspension systemOSSUR HF·Filed 2020·Granted Jul 11, 2023·0 cites·13 claims
- 3463US11058561B2Prosthetic device, system and method for increasing vacuum attachmentOSSUR HF·Filed 2018·Granted Jul 13, 2021·0 cites·15 claims
- 3563US10729568B2Pump mechanism for vacuum suspension systemOSSUR HF·Filed 2017·Granted Aug 4, 2020·0 cites·15 claims
- 3662US9474636B2Valve for prosthetic deviceOSSUR HF·Filed 2015·Granted Oct 25, 2016·1 cites·19 claims
- 3761US12097605B2Adapter for a rotary deviceOSSUR ICELAND EHF·Filed 2022·Granted Sep 24, 2024·0 cites·12 claims
- 3861US10369018B2Prosthetic device, system and method for increasing vacuum attachmentOSSUR HF·Filed 2017·Granted Aug 6, 2019·0 cites·16 claims
- 3960US2025177180A1Hinge assemblyOSSUR ICELAND EHF·Filed 2024·Application pending·0 cites
- 4059US10617537B2Vacuum assisted suspension systemOSSUR HF·Filed 2018·Granted Apr 14, 2020·0 cites·19 claims
- 4157US11413167B2Prosthetic joint with cam locking mechanismOSSUR ICELAND EHF·Filed 2019·Granted Aug 16, 2022·0 cites·20 claims
- 4257US2024000595A1Polymeric polycentric hingeOSSUR ICELAND EHF·Filed 2023·Application pending·0 cites
- 4355US12156845B2Locking and adjustment mechanism for exoskeletonOSSUR ICELAND EHF·Filed 2020·Granted Dec 3, 2024·0 cites·20 claims
- 4451US2025241775A1Orthopedic device having a lock mechanismOSSUR ICELAND EHF·Filed 2025·Application pending·0 cites
- 4549US12414867B1Prosthetic feet with increased flexibility to accommodate different heel heightsOESSUR ICELAND EHF·Filed 2019·Granted Sep 16, 2025·0 cites·18 claims
- 4639US2004012133A1Device for damping jerks in a ropeFiled 2001·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →