Inventor
Timothy A. Hjelsand
Inventor
Waconia, MN, US
Overview
Patents· 21 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B29Cprimary
B29CShaping or joining of plastics25%
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 sintering23%
B62DMotor vehicles13%
B29LIndexing scheme associated with subclass b29c, relating to particular articles8%
Y10TTechnical subjects covered by former us classification8%
B65HHandling thin or filamentary material, e.g. sheets, webs, cables6%
F04BPositive-displacement machines for liquids4%
F16JPistons4%
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. inserts2%
B41JTypewriters2%
PatentTitleYear
10,576,693Print head assembly and print head for use in fused deposition modeling system202010,513,103Ripple reduction in an additive manufacturing system20199,714,153'Spool assembly with locking mechanism for additive manufacturing system, and methods of use thereof'20179,550,327'Liquefier assembly for use in extrusion-based additive manufacturing systems'20179,321,608'Spool assembly with locking mechanism for additive manufacturing system, and methods of use thereof'20169,168,685'Print head assembly and print head for use in fused deposition modeling system'20159,073,263'Spool assembly for additive manufacturing system, and methods of manufacture and use thereof'20159,022,771'Liquefier assembly for use in extrusion-based additive manufacturing systems'20158,815,141'Method for building three-dimensional models with extrusion-based additive manufacturing systems'20148,647,098'Liquefier assembly for use in extrusion-based additive manufacturing systems'20148,647,102'Print head assembly and print head for use in fused deposition modeling system'20148,465,111'Print head for use in fused deposition modeling system'20136,769,451'Power beyond steering unit with bypass'20046,575,263'Torque device for electronic steer-by wire steering systems'20036,076,349'Hydrostatic automotive or high speed steering system'20006,071,102'Floating seal for sealed star gerotor'20005,960,694'Hydrostatic power steering system having reduced wheel slip'19995,638,864'Steering control unit with flow amplification for unequal area cylinder'19975,042,250'High-back pressure power steering device'19914,478,423'Oil seal and unitized seal carrier for reciprocating shaft'19844,474,382'Unitized seal carrier assembly for reciprocating shaft'1984Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1984Based in Duncan, OK, US· patent location history
1991–2004Patents assigned to EATON CORP (7)· patent assignee history
1991Based in St. Louis Park, MN, US· patent location history
1997–2020Based in Waconia, MN, US· patent location history
2013–2020Patents assigned to STRATASYS INC (12)· patent assignee history
2013–2016Patents assigned to HJELSAND TIMOTHY A (6)· patent assignee history
2013–2015Patents assigned to SWANSON WILLIAM J (5)· patent assignee history
2013–2014Patents assigned to BATCHELDER J SAMUEL (4)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| STRATASYS INC | 12 | 2013–2020 |
| EATON CORP | 7 | 1991–2004 |
| HJELSAND TIMOTHY Aself | 6 | 2013–2016 |
| SWANSON WILLIAM J | 5 | 2013–2015 |
| BATCHELDER J SAMUEL | 4 | 2013–2014 |
Locations
| Location | Patents | Span |
|---|---|---|
| Waconia, Minnesota, US | 18 | 1997–2020 |
| Duncan, OK, US | 2 | 1984 |
| St. Louis Park, Minnesota, US | 1 | 1991 |