Inventor

Douglas R. Ludin

Inventor

Malvern, PA, US

Overview

18→

Patents

2004–2021

Patent span

Performing operations

Primary field (CPC B)

Patents· 18 as inventor

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

B64Cprimary

B64CAeroplanes15%

Y02TClimate change mitigation technologies related to transportation15%

B29CShaping or joining of plastics11%

F16FSprings9%

Y10TTechnical subjects covered by former us classification9%

B29KIndexing scheme associated with subclasses b29b, b29c or b29d, relating to moulding materials or to materials for moulds, reinforcements, fillers or preformed parts, e.g. inserts5%

B29LIndexing scheme associated with subclass b29c, relating to particular articles5%

B64DEquipment for fitting in or to aircraft5%

E04BGeneral building constructions5%

B33YAdditive manufacturing, i.e. manufacturing of three-dimensional [3d] objects by additive deposition, additive agglomeration or additive layering, e.g. by 3d printing, stereolithography or selective laser sintering4%

PatentTitleYear

11,130,589Crash force attenuating fuel system2021 11,001,375Structurally tunable cores2021 10,962,073Elastomeric compression spring with load tuning feature and associated method of tuning2021 10,745,098Energy-absorbing under-floor airframe2020 10,598,251Vibration damping link and method therefore2020 10,518,894Fuel bladder mass attenuation system2019 10,207,788Structure having joined unitary structures2019 10,118,347Apparatuses for layup tooling2018 9,926,066'Corner tension fitting'2018 9,597,843'Method and apparatus for layup tooling'2017 9,593,740'Energy-absorbing composite tension-shear fitting'2017 9,500,249'Energy absorbing link'2016 9,284,727'Acoustic barrier support structure'2016 9,016,448'Energy absorbing device'2015 8,869,933'Acoustic barrier support structure'2014 8,584,319'Self-aligning hinge'2013 7,198,691'Fastenerless internal support for hollow structures'2007 6,719,870'Fastenerless internal support for hollow structures'2004

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

2004–2021Patents assigned to BOEING CO (18)· patent assignee history

2004–2007Based in Glen Mills, PA, US· patent location history

2013Patents assigned to LUDIN DOUGLAS (1)· patent assignee history

2013Patents assigned to STAUFFER MATTHEW S (1)· patent assignee history

2013–2021Based in Malvern, PA, US· patent location history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
BOEING CO	18	2004–2021
LUDIN DOUGLASself	1	2013
STAUFFER MATTHEW S	1	2013

Locations

Location	Patents	Span
Malvern, Pennsylvania, US	16	2013–2021
Glen Mills, Pennsylvania, US	2	2004–2007