Thaddeus Lech, Jr. — 19 Patents at Borgwarner

Thaddeus Lech, Jr. has been granted 19 US patents while listed as an inventor at Borgwarner. The first was granted in 1980 and the most recent in July 1987. Thaddeus Lech, Jr. ranks #229,345 of 4,157,543 US inventors in our database (top 5.5%). Patent records list Thaddeus Lech, Jr. in Roseville, MI, US.

Issued Patents All Time

Showing 1–19 of 19 patents

Patent #	Title	Co-Inventors	Date	Approx Value ⓘ
4679679	Clutch driven plate assembly with anti-backlash damping	Bruce Mullard	1987-07-14
4651859	Clutch driven plate assembly with a two-part hub	Robert A. Frantz, III	1987-03-24
4643287	Multi-stage torsional damping device	—	1987-02-17	$31,780,000
4620626	Clutch driven plate assembly with an anti-rattle damper	Bruce Mullard	1986-11-04
4615426	Clutch driven plate assembly	—	1986-10-07	$25,690,000
4556136	Clutch driven plate assembly	—	1985-12-03	$4,181,000
4553655	Two-stage clutch damper assembly	Paul Louis Schmitz	1985-11-19	$3,132,000
4548302	Two-stage clutch damper assembly	Robert A. Frantz, III	1985-10-22	$3,969,000
4548311	Vehicle torsional damper having low rate and high rate damping stages	—	1985-10-22	$3,969,000
4537296	Clutch driven plate assembly	Richard T. Popchock	1985-08-27
4502582	Wet clutch assembly	Richard T. Popchock	1985-03-05	$5,000,000
4471863	Multi-stage torsional damping device	—	1984-09-18	$4,984,000
4461376	Clutch driven plate assembly with multi-part hub	Kenneth A. Weage, deceased	1984-07-24	$12,219,000
4446955	Clutch driven plate assembly with a floating hub	—	1984-05-08	$14,319,000
4418812	Clutch driven plate assembly with a floating hub	—	1983-12-06	$4,690,000
4377225	Clutch driven plate assembly with variable friction area	Richard T. Popchock	1983-03-22	$13,552,000
4375254	Clutch driven plate assembly with cushioned friction material	—	1983-03-01	$2,516,000
4303149	Clutch driven plate with spline locking hub	—	1981-12-01	$1,495,000
4239097	Multiple stage vibration damper assembly	John F. Greacen, Kerry G. Knight	1980-12-16	$4,034,000

Thaddeus Lech, Jr. — 19 Patents

Issued Patents All Time

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