| Patent | Date |
|---|
Corrosion rate measurement using sacrificial probe
Grant 10,830,689 - Hedtke November 10, 2 | 2020-11-10 |
Process device with process variable measurement using image capture device
Grant 10,823,592 - Hedtke November 3, 2 | 2020-11-03 |
Corrosion rate measurement with multivariable sensor
Grant 10,190,968 - Hedtke , et al. Ja | 2019-01-29 |
Process variable transmitter with process variable sensor carried by process gasket
Grant 10,107,700 - Hedtke October 23, 2 | 2018-10-23 |
Industrial process device utilizing piezoelectric transducer
Grant 9,921,120 - Hedtke March 20, 2 | 2018-03-20 |
Process variable measurement and local display with multiple ranges
Grant 9,897,505 - Hedtke February 20, 2 | 2018-02-20 |
Corrosion rate measurement
Grant 9,891,161 - Hedtke , et al. February 13, 2 | 2018-02-13 |
High integrity process fluid pressure probe
Grant 9,841,338 - Hedtke , et al. December 12, 2 | 2017-12-12 |
Multivariable guided wave radar probe
Grant 9,841,307 - Hedtke December 12, 2 | 2017-12-12 |
Coplanar process fluid pressure sensor module
Grant 9,752,945 - Hedtke , et al. September 5, 2 | 2017-09-05 |
Isolator system for a pressure transmitter
Grant 9,588,003 - Hedtke , et al. March 7, 2 | 2017-03-07 |
Thermal diagnostic for single-crystal process fluid pressure sensor
Grant 9,568,387 - Hedtke February 14, 2 | 2017-02-14 |
Process Variable Measurement And Local Display With Multiple Ranges
App 20160377498 - Hedtke; Robert C. | 2016-12-29 |
Corrosion Rate Measurement With Multivariable Sensor
App 20160377527 - Hedtke; Robert C. ; et al. | 2016-12-29 |
High Integrity Process Fluid Pressure Probe
App 20160370240 - Hedtke; Robert C. ; et al. | 2016-12-22 |
Method and system for product authentication
Grant 9,473,303 - Hedtke , et al. October 18, 2 | 2016-10-18 |
Method and apparatus for measuring fluid process variable in a well
Grant 9,470,084 - Hedtke , et al. October 18, 2 | 2016-10-18 |
High integrity process fluid pressure probe
Grant 9,442,031 - Hedtke , et al. September 13, 2 | 2016-09-13 |
Corrosion Rate Measurement Using Sacrificial Probe
App 20160091411 - Hedtke; Robert C. | 2016-03-31 |
Multivariable Guided Wave Radar Probe
App 20160091357 - Hedtke; Robert C. | 2016-03-31 |
Process Variable Transmitter With Process Variable Sensor Carried By Process Gasket
App 20150268111 - Hedtke; Robert C. | 2015-09-24 |
Corrosion Rate Measurement
App 20150260633 - Hedtke; Robert C. ; et al. | 2015-09-17 |
Pressure isolation manifold
Grant 9,086,167 - Hedtke July 21, 2 | 2015-07-21 |
Pressure transmitter with hydrogen getter
Grant 9,057,659 - Hedtke June 16, 2 | 2015-06-16 |
Pressure Isolation Manifold
App 20150083245 - Hedtke; Robert C. | 2015-03-26 |
Process Device With Process Variable Measurement Using Image Capture Device
App 20150085104 - Hedtke; Robert C. | 2015-03-26 |
Isolator System For A Pressure Transmitter
App 20150082892 - Hedtke; Robert C. ; et al. | 2015-03-26 |
High Integrity Process Fluid Pressure Probe
App 20150000417 - Hedtke; Robert C. ; et al. | 2015-01-01 |
Method And System For Product Authentication
App 20140351588 - Hedtke; Robert C. ; et al. | 2014-11-27 |
Process variable transmitter with acceleration sensor
Grant 8,898,036 - Sittler , et al. November 25, 2 | 2014-11-25 |
Coplanar Process Fluid Pressure Sensor Module
App 20140251019 - Hedtke; Robert C. ; et al. | 2014-09-11 |
Coplanar process fluid pressure sensor module
Grant 8,776,608 - Hedtke , et al. July 15, 2 | 2014-07-15 |
Differential pressure transmitter with pressure sensor
Grant 8,752,433 - Hedtke June 17, 2 | 2014-06-17 |
Proximity sensor system for industrial process transmitter for detecting a spatial relationship between the transmitter and a mounting component
Grant 8,669,866 - Hedtke March 11, 2 | 2014-03-11 |
Thermal Diagnostic For Single-crystal Process Fluid Pressure Sensor
App 20140041437 - Hedtke; Robert C. | 2014-02-13 |
Differential Pressure Transmitter With Pressure Sensor
App 20130333440 - Hedtke; Robert C. | 2013-12-19 |
Pressure Transmitter With Hydrogen Getter
App 20130312531 - Hedtke; Robert C. | 2013-11-28 |
Process fluid pressure transmitter with separated sensor and sensor electronics
Grant 8,578,783 - Hedtke , et al. November 12, 2 | 2013-11-12 |
LCD design for cold temperature operation
Grant 8,570,260 - Hedtke , et al. October 29, 2 | 2013-10-29 |
Coplanar Process Fluid Pressure Sensor Module
App 20130104663 - Hedtke; Robert C. ; et al. | 2013-05-02 |
Industrial Process Device Utilizing Piezoelectric Transducer
App 20130079895 - Hedtke; Robert C. | 2013-03-28 |
Process Fluid Pressure Transmitter With Separated Sensor And Sensor Electronics
App 20130074604 - Hedtke; Robert C. ; et al. | 2013-03-28 |
Pressure-based diagnostic system for process transmitter
Grant 8,387,463 - Hedtke March 5, 2 | 2013-03-05 |
Projected instrument displays for field mounted process instruments
Grant 8,299,938 - Hedtke October 30, 2 | 2012-10-30 |
Transmitter output with scalable rangeability
Grant 8,276,458 - Hedtke October 2, 2 | 2012-10-02 |
Industrial process device utilizing piezoelectric transducer
Grant 8,250,924 - Hedtke August 28, 2 | 2012-08-28 |
Differential pressure transmitter with complimentary dual absolute pressure sensors
Grant 8,132,464 - Broden , et al. March 13, 2 | 2012-03-13 |
Method And Apparatus For Measuring Fluid Process Variable In A Well
App 20120036924 - Hedtke; Robert C. ; et al. | 2012-02-16 |
Transmitter Output With Scalable Rangeability
App 20120006120 - Hedtke; Robert C. | 2012-01-12 |
Differential Pressure Transmitter With Complimentary Dual Absolute Pressure Sensors
App 20120006119 - Broden; David A. ; et al. | 2012-01-12 |
Industrial process power scavenging device and method of deriving process device power from an industrial process
Grant 7,977,924 - Hedtke , et al. July 12, 2 | 2011-07-12 |
Method and apparatus for pressure measurement using fill tube
Grant 7,954,383 - Willcox , et al. June 7, 2 | 2011-06-07 |
Thermal-based diagnostic system for process transmitter
Grant 7,918,134 - Hedtke , et al. April 5, 2 | 2011-04-05 |
Industrial process device utilizing magnetic induction
Grant 7,913,566 - Hedtke March 29, 2 | 2011-03-29 |
Projected Instrument Displays For Field Mounted Process Instruments
App 20110057811 - Hedtke; Robert C. | 2011-03-10 |
Method and apparatus for pressure measurement using quartz crystal
Grant 7,870,791 - Hedtke , et al. January 18, 2 | 2011-01-18 |
Mode selectable field transmitter
Grant 7,808,379 - Hedtke , et al. October 5, 2 | 2010-10-05 |
LCD Design for Cold Temperature Operation
App 20100207913 - Hedtke; Robert C. ; et al. | 2010-08-19 |
Proximity sensor system for industrial process transmitter
App 20100148982 - Hedtke; Robert C. | 2010-06-17 |
Method And Apparatus For Pressure Measurement Using Quartz Crystal
App 20100132471 - Hedtke; Robert C. ; et al. | 2010-06-03 |
Method And Apparatus For Pressure Measurement Using Fill Tube
App 20100132472 - Willcox; Charles R. ; et al. | 2010-06-03 |
Industrial Process Power Scavenging Device And Method Of Deriving Process Device Power From An Industrial Process
App 20100109331 - Hedtke; Robert C. ; et al. | 2010-05-06 |
Process connection for process diagnostics
Grant 7,702,478 - Hedtke , et al. April 20, 2 | 2010-04-20 |
Thermal-based diagnostic system for process transmitter
App 20100083768 - Hedtke; Robert C. ; et al. | 2010-04-08 |
Pressure-based diagnostic system for process transmitter
App 20100083731 - Hedtke; Robert C. | 2010-04-08 |
Automated mechanical integrity verification
Grant 7,692,539 - Hedtke April 6, 2 | 2010-04-06 |
Vented high-temperature piezoelectric-based field device
Grant 7,650,798 - Foster , et al. January 26, 2 | 2010-01-26 |
Industrial Process Device Utilizing Piezoelectric Transducer
App 20090260438 - Hedtke; Robert C. | 2009-10-22 |
Process Variable Transmitter With Acceleration Sensor
App 20090043530 - Sittler; Fred C. ; et al. | 2009-02-12 |
Vented High-Temperature Piezoelectric-Based Field Device
App 20090019944 - Foster; Jeffry D. ; et al. | 2009-01-22 |
Flangeless differential pressure transmitter for industrial process control systems
Grant 7,472,608 - Hedtke January 6, 2 | 2009-01-06 |
Flangeless differential pressure transmitter for industrial process control systems
App 20080245158 - Hedtke; Robert C. | 2008-10-09 |
Mode Selectable field transmitter
App 20080218333 - Hedtke; Robert C. ; et al. | 2008-09-11 |
Pressure sensor using compressible sensor body
Grant 7,401,522 - Broden , et al. July 22, 2 | 2008-07-22 |
Automated mechanical integrity verification
App 20080157987 - Hedtke; Robert C. | 2008-07-03 |
Pressure transmitter with acoustic pressure sensor
Grant 7,379,792 - Hedtke May 27, 2 | 2008-05-27 |
Industrial process device utilizing magnetic induction
App 20070273496 - Hedtke; Robert C. | 2007-11-29 |
Remote process seal with improved stability in demanding applications
Grant 7,290,452 - Hedtke November 6, 2 | 2007-11-06 |
Process fluid flow device with variable orifice
Grant 7,255,012 - Hedtke August 14, 2 | 2007-08-14 |
LCD design for cold temperature operation
App 20070085807 - Hedtke; Robert C. | 2007-04-19 |
Pressure transmitter with acoustic pressure sensor
App 20070073417 - Hedtke; Robert C. | 2007-03-29 |
Pressure sensor using compressible sensor body
App 20060278005 - Broden; David A. ; et al. | 2006-12-14 |
Process connection for process diagnostics
App 20060212139 - Hedtke; Robert C. ; et al. | 2006-09-21 |
Instrument loop adapter
App 20060128199 - Hedtke; Robert C. | 2006-06-15 |
Process fluid flow device with variable orifice
App 20060112773 - Hedtke; Robert C. | 2006-06-01 |
Remote process seal with improved stability in demanding applications
App 20050126296 - Hedtke, Robert C. | 2005-06-16 |
Transmitter with dual protocol interface
Grant 6,904,476 - Hedtke June 7, 2 | 2005-06-07 |
Scalable process transmitter
Grant 6,898,980 - Behm , et al. May 31, 2 | 2005-05-31 |
Process device with supervisory overlayer
App 20050113942 - Longsdorf, Randy J. ; et al. | 2005-05-26 |
Process transmitter with wireless communication link
Grant 6,839,546 - Hedtke January 4, 2 | 2005-01-04 |
Process transmitter with wireless communication link
App 20040203421 - Hedtke, Robert C. | 2004-10-14 |
Transmitter with dual protocol interface
App 20040199681 - Hedtke, Robert C. | 2004-10-07 |
Scalable process transmitter
App 20040089075 - Behm, Steven M. ; et al. | 2004-05-13 |
Pressure transmitter with improved isolator system
Grant 6,662,662 - Nord , et al. December 16, 2 | 2003-12-16 |
Ancillary process outputs of a vortex flowmeter
Grant 6,651,512 - Kleven , et al. November 25, 2 | 2003-11-25 |
Gas fill system in a pressure transmitter
Grant 6,609,427 - Westfield , et al. August 26, 2 | 2003-08-26 |
Scalable process transmitter
Grant 6,457,367 - Behm , et al. October 1, 2 | 2002-10-01 |
Scalable process transmitter
App 20020108448 - Behm, Steven M. ; et al. | 2002-08-15 |
Vortex flowmeter with signal processing
Grant 6,412,353 - Kleven , et al. July 2, 2 | 2002-07-02 |
Vortex flowmeter with signal processing
Grant 6,170,338 - Kleven , et al. January 9, 2 | 2001-01-09 |
Tank leak detector
Grant 5,095,739 - Hedtke March 17, 1 | 1992-03-17 |
Pressure transmitter housing
Grant D297,314 - Hedtke August 23, 1 | 1988-08-23 |
Pressure transmitter housing
Grant 4,653,330 - Hedtke March 31, 1 | 1987-03-31 |
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