David T. Vierk has been granted 11 US patents while listed as an inventor at Borgwarner . The first was granted in 1991 and the most recent in November 2024. David T. Vierk ranks #435,149 of 4,157,543 US inventors in our database (top 10.5%). Patent records list David T. Vierk in Mokena, IL, US.
Patents per Year Patents granted per year, 1991 to 2024 Bar chart with a peak of 1 patents in 1991. peak 1 1991: 1 patents 1991 1995: 1 patents 1996: 1 patents 1996 1997: 1 patents 2014: 1 patents 2014 2017: 1 patents 2018: 1 patents 2018 2019: 1 patents 2021: 1 patents 2021 2023: 1 patents 2024: 1 patents 2024
Issued Patents All Time
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Showing 1–11 of 11 patents
Patent # Title Co-Inventors Date Approx Value ⓘ
12146533 Clutch assembly and rotating system including the same Benjamin A. Siegel , Steven John Kowal 2024-11-19
$15,305,000
11746847 Clutch system and vehicle transmission system including the same Benjamin A. Siegel , Steven John Kowal , Richard W. Pridgen, Jr. 2023-09-05
$51,830,000
11092200 Friction plate and clutch assembly including the same Benjamin A. Siegel , Paul H. Elsesser , Richard W. Pridgen, Jr. 2021-08-17
$76,526,000
10378631 Friction clutch having a first friction material engageable in a partially engaged position and a second friction material engageable in a fully engaged position Benjamin A. Siegel 2019-08-13
$6,463,000
10060485 Composite friction and dog clutch Steven John Kowal 2018-08-28
$21,118,000
9771984 Dual gain friction clutch Steven John Kowal 2017-09-26
$11,552,000
8905212 Synchro-lock clutch-combination friction and mechanical locking clutch James G. Marciniak , Steven John Kowal , James R. Papania 2014-12-09
$25,444,000
5680921 Transmission band assembly Anthony J. Grzesiak 1997-10-28
$6,110,000
5499700 Double wrap brake band with break-away ties Darrel D. Richardson , Anthony J. Grzesiak 1996-03-19
$1,158,000
5476160 Double-wrap brake band assembly Robert J. Fenoglio , Steven P. Geary , Christopher P. Puchalla , Anthony J. Grzesiak , Allen C. Mayhew 1995-12-19
$4,242,000
4986397 Lock-up piston plate for recirculating flow torque converter — 1991-01-22