Inventor
Michael J. Karagoulis
Inventor
Okemos, MI, US
Overview
Patents· 35 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
B23Kprimary
B23KSoldering or unsoldering59%
B23BTurning14%
Y10TTechnical subjects covered by former us classification10%
C21DModifying the physical structure of ferrous metals5%
B21DWorking or processing of sheet metal or metal tubes, rods or profiles without essentially removing material2%
B25JManipulators2%
B32BLayered products, i.e. products built-up of strata of flat or non-flat, e.g. cellular or honeycomb, form2%
B65GTransport or storage devices, e.g. conveyors for loading or tipping, shop conveyor systems or pneumatic tube conveyors2%
B65HHandling thin or filamentary material, e.g. sheets, webs, cables2%
C22CAlloys2%
PatentTitleYear
11,084,119Electrode for resistance spot welding of dissimilar materials202111,045,894Weld schedule for resistance spot welding of aluminum alloy workpieces202110,981,244Resistance welding electrode202110,981,243Multi-step direct welding of an aluminum-based workpiece to a steel workpiece202110,940,557Programmable polarity module for DC resistance spot welding202110,766,095Mating electrodes for resistance spot welding of aluminum workpieces to steel workpieces202010,682,724Resistance spot welding of aluminum-to-aluminum, aluminum-to-steel, and steel-to-steel in a specified sequence and using a cover202010,675,704Alternately direct resistance spot welding of Al-to-Al, al-to-steel, and steel-to-steel with welding electrode having oxide-disrupting structural features202010,610,956Welding electrode cutting tool and method of using the same202010,456,856Welding electrode cutting tool and method of using the same201910,335,891Weld face design for spot welding201910,335,892Weld electrode for attractive weld appearance201910,272,515Power pulse method for controlling resistance weld nugget growth and properties during steel spot welding201910,259,071Resistive welding electrode and method for spot welding steel and aluminum alloy workpieces with the resistive welding electrode201910,245,675Multi-stage resistance spot welding method for workpiece stack-up having adjacent steel and aluminum workpieces201910,052,710Resistance spot welding steel and aluminum workpieces using electrode weld face cover201810,010,966Electrode for resistance spot welding of dissimilar metals20189,999,938Multi-step direct welding of an aluminum-based workpiece to a steel workpiece20189,969,026Weld schedule for resistance spot welding of aluminum alloy workpieces20189,925,617'Electrode for spot welding'20189,914,599'Systems, processes and apparatuses for automated handling of non-ferrous metal objects'20189,908,199'Programmable polarity module for DC resistance spot welding'20189,737,956'Resistance spot welding thin gauge steels'20179,682,439'Welding electrode with contoured face'20179,676,065'Resistance spot welding of aluminum to aluminum and steel to steel'20179,440,305'Method of resistance spot welding aluminum alloy workpieces'20169,346,118'Forming and re-forming welding electrodes with contoured faces'20168,927,894'Weld electrode for attractive weld appearance'20158,833,215'Cutting tool for forming and re-forming welding electrodes with contoured faces'20148,525,066'Electrode for spot welding'20138,436,269'Welding electrode with contoured face'20138,415,582'Method for monitoring and maintaining a resistance welding apparatus'20138,274,010'Welding electrode with contoured face'20128,222,560'Weld electrode for attractive weld appearance'20127,265,313'Method and apparatus for improved cooling of resistance welding cap'2007Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2007–2016Patents assigned to GM GLOBAL TECH OPERATIONS INC (9)· patent assignee history
2007–2021Based in Okemos, MI, US· patent location history
2012–2018Patents assigned to KARAGOULIS MICHAEL J (9)· patent assignee history
2012–2018Patents assigned to SIGLER DAVID R (8)· patent assignee history
2012–2015Patents assigned to SCHROTH JAMES G (3)· patent assignee history
2016–2021Patents assigned to GM GLOBAL TECH OPERATIONS LLC (26)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| GM GLOBAL TECH OPERATIONS LLC | 26 | 2016–2021 |
| GM GLOBAL TECH OPERATIONS INC | 9 | 2007–2016 |
| KARAGOULIS MICHAEL Jself | 9 | 2012–2018 |
| SIGLER DAVID R | 8 | 2012–2018 |
| SCHROTH JAMES G | 3 | 2012–2015 |
Locations
| Location | Patents | Span |
|---|---|---|
| Okemos, MI, US | 35 | 2007–2021 |