Joan R. Ewing has been granted 15 US patents while listed as an inventor at Xerox . The first was granted in 1982 and the most recent in February 2002. Joan R. Ewing ranks #307,048 of 4,157,543 US inventors in our database (top 7.4%). Patent records list Joan R. Ewing in Pittsford, NY, US.
Patents per Year Patents granted per year, 1982 to 2002 Bar chart with a peak of 2 patents in 1986. peak 2 1982: 1 patents 1982 1986: 2 patents 1988: 2 patents 1988 1989: 1 patents 1990: 1 patents 1990 1991: 1 patents 1992: 1 patents 1992 1993: 1 patents 1994: 1 patents 1994 1996: 1 patents 1998: 1 patents 1998 1999: 1 patents 2002: 1 patents 2002
Issued Patents All Time
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Showing 1–15 of 15 patents
Patent # Title Co-Inventors Date Approx Value ⓘ
6350516 Protective corona coating compositions and processes thereof Joseph R. Weber 2002-02-26
$7,865,000
5968674 Conductive polymer coatings and processes thereof Bing R. Hsieh , Anita C. VanLaeken 1999-10-19
$8,513,000
5731078 Developing apparatus and coated developer roller Bing R. Hsieh , Damodar M. Pai , Kathyrn A. Wallace , Jerry H. Taylor , Francois Soos +1 more 1998-03-24
$19,680,000
5587224 Developing apparatus including a coated developer roller Bing R. Hsieh , Joseph Mort , Mary A. Machonkin 1996-12-24
$12,442,000
5325267 Remote driver board having input/output connector circuitry molded therein — 1994-06-28
$2,323,000
5267866 Flexible electrical interconnect Joseph A. Swift , Victor Zaderej 1993-12-07
$8,646,000
5153023 Process for catalysis of electroless metal plating on plastic Thomas E. Orlowski , James M. Duff , Joseph A. Swift , Raymond E. Bailey 1992-10-06
$988,000
5008707 Simultaneous charging and exposure for pictorial quality Donald E. Wiedrich 1991-04-16
$7,133,000
4937633 Cleaning blade defect sensing arrangement — 1990-06-26
$1,146,000
4841099 Electrically insulating polymer matrix with conductive path formed in situ Arthur J. Epstein , Joseph A. Swift 1989-06-20
$6,525,000
4761709 Contact brush charging Joseph A. Swift 1988-08-02
$4,376,000
4727453 Alternating current inductive charging of a photoreceptor — 1988-02-23
$2,527,000
4585320 Corona generating device Robert P. Altavela , Raymond E. Bailey , Edwin M. Wallin 1986-04-29
$3,323,000
4585323 Corona generating device Edwin M. Wallin 1986-04-29
$3,323,000
4330349 Method for preparing conductive fiber brushes Joseph A. Swift , C. Michael Ray 1982-05-18
$1,468,000
