John R. Marshall has been granted 16 US patents while listed as an inventor at Bioject . The first was granted in 1980 and the most recent in August 2023. John R. Marshall ranks #284,196 of 4,157,543 US inventors in our database (top 6.8%). Patent records list John R. Marshall in Beaverton, OR, US.
Patents per Year Patents granted per year, 1980 to 2023 Bar chart with a peak of 3 patents in 1990. peak 3 1980: 1 patents 1980 1989: 2 patents 1990: 3 patents 1990 1994: 2 patents 1997: 1 patents 1997 2000: 1 patents 2004: 1 patents 2004 2005: 1 patents 2007: 1 patents 2007 2018: 1 patents 2020: 1 patents 2020 2023: 1 patents 2023
Issued Patents All Time
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Showing 1–16 of 16 patents
Patent # Title Co-Inventors Date Approx Value ⓘ
11723840 Intradermal injection device Daniel E. Williamson 2023-08-15
$2,378,000
10697614 Lamp — 2020-06-30
10045911 Intradermal injection device Daniel E. Williamson 2018-08-14
$5,089,000
7238167 Needle-free injection system Sergio Landau , Daniel E. Williamson 2007-07-03
$490,000
6935384 Needle-free injection system Sergio Landau 2005-08-30
$419,000
6676630 Needle-free injection system Sergio Landau , Dan Williamson 2004-01-13
$540,000
6024658 Game ball monitoring method and apparatus — 2000-02-15
5692513 Noninvasive-blood-pressure(NIBP) monitoring apparatus with noninflatable, pressure-information-providing (PIP) structure Charles L. Davis 1997-12-02
$1,325,000
5351694 Noninvasive-blood-pressure (NIBP) monitoring apparatus with noninflatable, pressure-information-providing (PIP) structure Charles L. Davis 1994-10-04
$1,090,000
5298137 Method and apparatus for linear magnetron sputtering — 1994-03-29
4946793 Impedance matching for instrumentation which electrically alters vesicle membranes — 1990-08-07
4923814 High speed, high power apparatus for vesicle prealignment, poration, loading and fusion in uniform electric fields and method therefor — 1990-05-08
4906576 High speed, high power apparatus for vesicle prealignment, poration, loading and fusion in uniform electric fields and method therefor — 1990-03-06
4849089 Disposable electromanipulation chamber — 1989-07-18
4824241 Atomic spectroscopy David Littlejohn 1989-04-25
4185664 Low noise fluid pressure reducer John M. Zabsky 1980-01-29
$10,438,000
