Richard Marczewski has been granted 5 US patents while listed as an inventor at Delphi Technologies . The first was granted in 1991 and the most recent in September 2008. Richard Marczewski ranks #907,971 of 4,157,543 US inventors in our database (top 21.8%). Patent records list Richard Marczewski in Rochester, MI, US.
Patents per Year Patents granted per year, 1991 to 2008 Bar chart with a peak of 2 patents in 2005. peak 2 1991: 1 patents 1991 2004: 1 patents 2004 2005: 2 patents 2005 2008: 1 patents 2008
Issued Patents All Time
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Showing 1–5 of 5 patents
Patent # Title Co-Inventors Date Approx Value ⓘ
7423232 Method for resistance welding/brazing a tube to a member Venkatasubramanian Ananthanarayanan , Dharmendra M. Ramachandra 2008-09-09
6953147 Method for joining a tube to a member Venkatasubramanian Ananthanarayanan , Dharmendra M. Ramachandra 2005-10-11
6953907 Method for metallurgically joining a tube to a member Venkatasubramanian Ananthanarayanan , Dharmendra M. Ramachandra 2005-10-11
6706793 Intumescent fire retardant composition and method of manufacture thereof Ismat A. Abu-Isa , Mark Williams 2004-03-16
$2,703,000
4985857 Method and apparatus for diagnosing machines Atul Bajpai , Melissa M. Marek , Anil B. Shrivastava , Charles S. Amble , Robert H. Joyce +2 more 1991-01-15
