Inventor · disambiguated record
Douglas E. Ivers
Also filed as: IVERS DOUGLAS · IVERS DOUGLAS E · IVERS DOUGLAS EDWARD
31 granted patents·9 pending applications·1,899 citations·filing 1989–2025
98Inventor score
Top patents by PatentIndex Score
40 records- 0198US4887699AVibration attenuating method utilizing continuously variable semiactive damperLORD CORP·Filed 1989·Granted Dec 19, 1989·162 cites·18 claims
- 0297US9073627B2Helicopter vibration control system and circular force generation systems for canceling vibrationsJOLLY MARK R·Filed 2010·Granted Jul 7, 2015·34 cites·16 claims
- 0397US7448854B2Helicopter vibration control system and rotary force generator for canceling vibrationsLORD CORP·Filed 2005·Granted Nov 11, 2008·61 cites·36 claims
- 0497US5570286ARegenerative system including an energy transformer which requires no external power source to drive sameLORD CORP·Filed 1993·Granted Oct 29, 1996·165 cites·20 claims
- 0596US6009985AEfficient multi-directional active vibration absorber assemblyLORD CORP·Filed 1997·Granted Jan 4, 2000·94 cites·14 claims
- 0696US5906254AActive systems and devices including active vibration absorbers (AVAS)LORD CORP·Filed 1995·Granted May 25, 1999·98 cites·27 claims
- 0796US5276622ASystem for reducing suspension end-stop collisionsLORD CORP·Filed 1991·Granted Jan 4, 1994·117 cites·14 claims
- 0895US9776712B2Helicopter vibration control system and circular force generation systems for canceling vibrationsLORD CORP·Filed 2015·Granted Oct 3, 2017·8 cites·16 claims
- 0994US8162606B2Helicopter hub mounted vibration control and circular force generation systems for canceling vibrationsJOLLY MARK R·Filed 2009·Granted Apr 24, 2012·28 cites·19 claims
- 1094US6095486ATwo-way magnetorheological fluid valve assembly and devices utilizing sameLORD CORP·Filed 1997·Granted Aug 1, 2000·180 cites·23 claims
- 1193US8322497B2Magneto-rheological dampers for semi-active suspension systemsMARJORAM ROBERT H·Filed 2009·Granted Dec 4, 2012·69 cites·22 claims
- 1293US6158470ATwo-way magnetorheological fluid valve assembly and devices utilizing sameLORD CORP·Filed 2000·Granted Dec 12, 2000·115 cites·3 claims
- 1392US8313296B2Helicopter vibration control system and rotary force generator for canceling vibrationsJOLLY MARK·Filed 2011·Granted Nov 20, 2012·23 cites·7 claims
- 1491US6983833B2Self-tuning vibration absorber system and method of absorbing varying frequency vehicle vibrationsLORD CORP·Filed 2003·Granted Jan 10, 2006·37 cites·42 claims
- 1591US4921272ASemi-active damper valve means with electromagnetically movable discs in the pistonLORD CORP·Filed 1989·Granted May 1, 1990·70 cites·12 claims
- 1690US5947457AFluid-filled active vibration absorberLORD CORP·Filed 1997·Granted Sep 7, 1999·67 cites·23 claims
- 1789US4972929ABidirectional dual disc valve assemblyLORD CORP·Filed 1989·Granted Nov 27, 1990·53 cites·7 claims
- 1888US6695294B2Controlled equilibrium device with displacement dependent spring rates and integral dampingLORD CORP·Filed 2001·Granted Feb 24, 2004·53 cites·17 claims
- 1987US7942633B2Helicopter vibration control system and rotary force generator for canceling vibrationsLORD CORP·Filed 2008·Granted May 17, 2011·11 cites·35 claims
- 2087US5957440AActive fluid mountingLORD CORP·Filed 1997·Granted Sep 28, 1999·59 cites·19 claims
- 2187US5730429ADecouplers for active devicesLORD CORP·Filed 1993·Granted Mar 24, 1998·53 cites·13 claims
- 2286US5551650AActive mounts for aircraft enginesLORD CORP·Filed 1994·Granted Sep 3, 1996·51 cites·11 claims
- 2385US6311110B1Adaptive off-state control methodLORD CORP·Filed 1999·Granted Oct 30, 2001·62 cites·24 claims
- 2485US5004079ASemi-active damper valve means and methodLORD CORP·Filed 1989·Granted Apr 2, 1991·54 cites·24 claims
- 2584US6002778AActive structural control system and method including active vibration absorbers (AVAS)LORD CORP·Filed 1996·Granted Dec 14, 1999·69 cites·12 claims
- 2682US6213442B1Isolation system for isolation tables and the likeLORD CORP·Filed 1998·Granted Apr 10, 2001·47 cites·30 claims
- 2780US7942248B2Adjustable damping control with end stopLORD CORP·Filed 2002·Granted May 17, 2011·45 cites·17 claims
- 2876US8033358B2Noise controlled turbine engine with aircraft engine adaptive noise control tubesLORD CORP·Filed 2008·Granted Oct 11, 2011·12 cites·52 claims
- 2967US10392102B2Helicopter vibration control system and circular force generation systems for canceling vibrationsLORD CORP·Filed 2017·Granted Aug 27, 2019·1 cites·11 claims
- 3064US11285313B2Predictive QRS detection and R-to-R timing systems and methodsNUPULSECV INC·Filed 2019·Granted Mar 29, 2022·1 cites·34 claims
- 3162US12178586B2Predictive QRS detection and R-to-R timing systems and methodsNUPULSECV INC·Filed 2022·Granted Dec 31, 2024·0 cites·18 claims
- 3262US2024382739A1System and method for preventing gas leakage from an intra-aortic balloonNUPULSECV INC·Filed 2023·Application pending·0 cites
- 3359US2025387614A1Systems, apparatuses, devices and methods of leak detection for pneumatic cardiac assist devicesNUPULSECV INC·Filed 2025·Application pending·0 cites
- 3459US2025018170A1Real-time detection of r-waves and methods thereforNUPULSECV INC·Filed 2023·Application pending·0 cites
- 3558US2023069771A1Drive unit for intravascular circulatory support systemsNUPULSECV INC·Filed 2022·Application pending·0 cites
- 3653US2015034433A1Magneto-rheological fluid damper having enhanced on-state yield strengthLORD CORP·Filed 2014·Application pending·0 cites
- 3751US2009294231A1Magneto-rheological fluid damper having enhanced on-state yield strengthLORD CORP·Filed 2009·Application pending·0 cites
- 3849US2010109276A1Controllable vehicle suspension system with magneto-rheological fluid deviceMARJORAM ROBERT H·Filed 2009·Application pending·0 cites
- 3949US2020345911A1Predictive qrs detection and r-to-r timing systems and methodsNUPULSECV INC·Filed 2019·Application pending·0 cites
- 4036US2005040574A1Pneumatic surface effect damperFiled 2003·Application pending·0 cites
Join the waitlist — get patent alerts
Get an alert when Douglas E. Ivers 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 →