Robert C. Hedtke has been granted 71 US patents while listed as an inventor at Rosemount . The first was granted in 1987 and the most recent in November 2020. Robert C. Hedtke ranks #28,405 of 4,157,543 US inventors in our database (top 0.68%). Patent records list Robert C. Hedtke in Young America, MN, US.
Patents per Year Patents granted per year, 1987 to 2020 Bar chart with a peak of 7 patents in 2017. peak 7 1987: 1 patents 1987 1988: 1 patents 1992: 1 patents 2001: 1 patents 2001 2002: 4 patents 2003: 4 patents 2005: 3 patents 2005 2007: 3 patents 2008: 5 patents 2009: 4 patents 2009 2010: 5 patents 2011: 5 patents 2012: 5 patents 2012 2013: 3 patents 2014: 5 patents 2015: 3 patents 2015 2016: 4 patents 2017: 7 patents 2018: 4 patents 2018 2019: 1 patents 2020: 2 patents 2020
Issued Patents All Time
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Showing 1–25 of 71 patents
Patent # Title Co-Inventors Date Approx Value ⓘ
10830689 Corrosion rate measurement using sacrificial probe — 2020-11-10
$50,703,000
10823592 Process device with process variable measurement using image capture device — 2020-11-03
$299,897,000
10190968 Corrosion rate measurement with multivariable sensor Charles R. Willcox 2019-01-29
$80,593,000
10107700 Process variable transmitter with process variable sensor carried by process gasket — 2018-10-23
$143,208,000
9921120 Industrial process device utilizing piezoelectric transducer — 2018-03-20
$148,002,000
9897505 Process variable measurement and local display with multiple ranges — 2018-02-20
$75,132,000
9891161 Corrosion rate measurement Fred C. Sittler , Charles R. Willcox 2018-02-13
$35,817,000
9841338 High integrity process fluid pressure probe Fred C. Sittler 2017-12-12
$37,790,000
9841307 Multivariable guided wave radar probe — 2017-12-12
$37,790,000
9752945 Coplanar process fluid pressure sensor module David A. Broden 2017-09-05
$19,064,000
9702743 Flowmeter for measuring flow of a process fluid through a conduit including upstream and downstream process variable sensors mounted on the pitot tube Gregory Robert Strom , David E. Wiklund 2017-07-11
$29,209,000
9588003 Isolator system for a pressure transmitter Eric Petersen 2017-03-07
$38,508,000
9568387 Thermal diagnostic for single-crystal process fluid pressure sensor — 2017-02-14
$31,838,000
9551599 Normalized process dynamics John P. Miller 2017-01-24
$54,023,000
9470084 Method and apparatus for measuring fluid process variable in a well Liangju Lu 2016-10-18
$20,774,000
9473303 Method and system for product authentication Dale Scott Davis , John P. Schulte 2016-10-18
$20,774,000
9453407 Detection of position of a plunger in a well Nathan Len Wiater 2016-09-27
$146,245,000
9442031 High integrity process fluid pressure probe Fred C. Sittler 2016-09-13
$135,763,000
9157775 Flowmeter for measuring flow of a process fluid through a conduit including process variable sensors mounted on a pitot tube Gregory Robert Strom , David E. Wiklund 2015-10-13
$27,687,000
9086167 Pressure isolation manifold — 2015-07-21
$18,747,000
9057659 Pressure transmitter with hydrogen getter — 2015-06-16
$30,505,000
8898036 Process variable transmitter with acceleration sensor Fred C. Sittler 2014-11-25
$109,640,000
8813572 Ferrofluid modified fill fluid for pressure transmitters — 2014-08-26
$50,997,000
8776608 Coplanar process fluid pressure sensor module David A. Broden 2014-07-15
$39,315,000
8752433 Differential pressure transmitter with pressure sensor — 2014-06-17
$59,188,000