John M. Clark has been granted 19 US patents while listed as an inventor at Radioshack . The first was granted in 1982 and the most recent in September 2024. John M. Clark ranks #229,345 of 4,157,543 US inventors in our database (top 5.5%). Patent records list John M. Clark in San Antonio, TX, US.
Patents per Year Patents granted per year, 1982 to 2024 Bar chart with a peak of 2 patents in 2001. peak 2 1982: 1 patents 1982 1985: 1 patents 1989: 1 patents 1989 1996: 1 patents 2001: 2 patents 2001 2002: 2 patents 2003: 2 patents 2003 2004: 1 patents 2005: 1 patents 2005 2006: 2 patents 2009: 1 patents 2009 2014: 1 patents 2015: 1 patents 2015 2023: 1 patents 2024: 1 patents 2024
Issued Patents All Time
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Showing 1–19 of 19 patents
Patent # Title Co-Inventors Date Approx Value ⓘ
12087220 Exhaust gas aftertreatment system Colin L. Norris , Matthew Henry , Stephen W. Caddy , Randolph G. Zoran , Stephen M. Holl +2 more 2024-09-10
$47,117,000
11808192 Exhaust gas aftertreatment system Colin L. Norris , Matthew Henry , Stephen W. Caddy , Randolph G. Zoran , Stephen M. Holl +2 more 2023-11-07
$47,788,000
9205912 Compound motion structure — 2015-12-08
8858368 Handheld performance tracking and mapping device utilizing an optical scanner — 2014-10-14
7604131 Sliding storage rack Stephen Smith 2009-10-20
7152732 Protective housing assembly, and associated method, for optical storage media — 2006-12-26
$19,843,000
7050784 Weather radio with channel acquisition system — 2006-05-23
$15,414,000
6872353 Method of molding using compact molding apparatus John H. Gillen , Charles E. Ash 2005-03-29
6684174 Wind gauge Ian Dwayne Campbell , Watson C. K. Chow , David J. Edmondson , Marco C. Ko , Alan Lam +2 more 2004-01-27
$32,277,000
6638046 Compact molding apparatus and method John H. Gillen , Charles E. Ash 2003-10-28
6626659 Injection molding method and apparatus having improved detachable clamping unit with horizontal booking dies Charles E. Ash , John H. Gillen 2003-09-30
6393103 Method and apparatus for emulating telephone services Ronald W. Pedigo , Richard Carey 2002-05-21
$57,802,000
6339695 Cordless phone data transfer — 2002-01-15
$65,357,000
6292563 Volume attenuator for flip-style hand-held phone Wayne K. Wilson 2001-09-18
$66,179,000
6167608 Tank upgrading method and tank assembly John Burwell , Robin Berg 2001-01-02
5530193 Maize dwarf mosaic virus resistant plants Joseph Jilka , Lynn E. Murry , Liliana E. C. Scarafia 1996-06-25
4840287 Locking mechanism for a pressure cooker Edward L. Brewer 1989-06-20
4561292 Double-wall underground container for storing liquids and leak detecting means therefor Peter J. Pugnale , William R. Penland 1985-12-31
$2,436,000
4318868 Analog carburetor M. Robert Showalter , J. Wray Fogwell 1982-03-09