Inventor
John W. Hoffman
Inventor
Perrysburg, OH, US
Overview
Patents· 22 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H01Tprimary
H01TSpark gaps18%
Y10TTechnical subjects covered by former us classification18%
F23QIgnition6%
A61FFilters implantable into blood vessels4%
C04BLime, magnesia4%
G06FElectric digital data processing4%
H01CResistors4%
H02GInstallation of electric cables or lines, or of combined optical and electric cables or lines4%
H05KPrinted circuits4%
Y02PClimate change mitigation technologies in the production or processing of goods4%
PatentTitleYear
9,767,241'Method and apparatus for printed circuit board with stiffener'20179,633,541'Display system for tracking large numbers of persons and/or objects'20178,839,753'Corona igniter having improved gap control'20148,680,758'Spark plug having a plastic upper insulator and method of construction'20148,434,443'Igniter system for igniting fuel'20138,272,909'Method of assembling a small-diameter spark plug with resistive seal'20128,079,136'Method for forming layered heating element for glow plug'20118,013,502'Small-diameter spark plug with resistive seal'20118,012,898'Ceramic with improved high temperature electrical properties for use as a spark plug insulator'20117,969,077'Spark plug with an improved seal'20117,858,547'Ceramic with improved high temperature electrical properties for use as a spark plug insulator'20107,721,238'Method and apparatus for configurable printed circuit board circuit layout pattern'20107,607,206'Method for forming layered heating element for glow plug'20097,572,480'Method of fabricating a multilayer ceramic heating element'20097,443,089'Spark plug with tapered fired-in suppressor seal'20087,252,730'Method and apparatus for applying an elastic member'20077,243,403'Buckle safety device'20075,597,010'Safety cap for fluid valve'19975,281,763'Cable blocking'19945,171,388'Apparatus for and method of applying an elastic material to a flexible backing'19925,098,752'Recoverable elastomeric sleeve and method for installation and use'19924,257,863'Gas sensors and method of making such sensors'1981Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1992–2007Based in Appleton, WI, US· patent location history
1992–1994Based in Menlo Park, CA, US· patent location history
2008–2012Patents assigned to FEDERAL MOGUL WORLD WIDE INC (8)· patent assignee history
2008–2014Based in Perrysburg, OH, US· patent location history
2010–2017Patents assigned to DIGI INT INC (2)· patent assignee history
2010–2017Based in Quincy, CA, US· patent location history
2011–2017Patents assigned to HOFFMAN JOHN W (5)· patent assignee history
2013–2014Patents assigned to FEDERAL MOGUL IGNITION CO (3)· patent assignee history
2013–2014Patents assigned to LYKOWSKI JAMES D (3)· patent assignee history
2017Based in Mentor, OH, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| FEDERAL MOGUL WORLD WIDE INC | 8 | 2008–2012 |
| HOFFMAN JOHN Wself | 5 | 2011–2017 |
| FEDERAL MOGUL IGNITION CO | 3 | 2013–2014 |
| LYKOWSKI JAMES D | 3 | 2013–2014 |
| DIGI INT INC | 2 | 2010–2017 |
Locations
| Location | Patents | Span |
|---|---|---|
| Perrysburg, OH, US | 11 | 2008–2014 |
| Quincy, California, US | 2 | 2010–2017 |
| Appleton, WI, US | 2 | 1992–2007 |
| Menlo Park, California, US | 2 | 1992–1994 |
| Mentor, OH, US | 1 | 2017 |