Inventor · disambiguated record
David Grant Lingnau
Also filed as: LINGNAU DAVID · LINGNAU DAVID GRANT
7 granted patents·2 pending applications·134 citations·filing 1995–2023
82Inventor score
Top patents by PatentIndex Score
9 records- 0188US6637642B1Method of solid state welding and welded partsIND FIELD ROBOTICS·Filed 1999·Granted Oct 28, 2003·96 cites·27 claims
- 0284US11072036B2Concentric welded pipes with condition monitoring capability and method of manufactureSPINDUCTION WELD INC·Filed 2017·Granted Jul 27, 2021·3 cites·10 claims
- 0384US7931184B2Apparatus for induction friction solid state weldingSPINDUCTION WELD INC·Filed 2007·Granted Apr 26, 2011·13 cites·10 claims
- 0464US5660753AApparatus for high frequency induction heating for the removal of coatings from metal surfacesFiled 1995·Granted Aug 26, 1997·22 cites·9 claims
- 0562US12320011B2Vitreous coating application by induction heating and integration with induction kinetic weld joiningAMPCLAD COATING TECH INC·Filed 2023·Granted Jun 3, 2025·0 cites·4 claims
- 0654US11773495B2Vitreous coating application by induction heating and integration with induction kinetic weld joiningAMPCLAD COATING TECH INC·Filed 2020·Granted Oct 3, 2023·0 cites·13 claims
- 0753US2023017230A1Method for Gas Phase Alloy Enhancement of Solid State WeldsSPINDUCTION WELD INC·Filed 2020·Application pending·0 cites
- 0853US2024207983A1Parallel Robotics System and Method of Induction Kinetic Hybrid Welding ProcessesSPINDUCTION WELD INC·Filed 2023·Application pending·0 cites
- 0952US10926350B2Integrated heat treatment apparatus and method for autogenous weldingLINGNAU DAVID GRANT·Filed 2018·Granted Feb 23, 2021·0 cites·20 claims
Join the waitlist — get patent alerts
Get an alert when David Grant Lingnau 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 →