Johnston; David F
Patent Applications and Registrations
Patent applications and USPTO patent grants for Johnston; David F.The latest application filed is for "fan brake control system".
Company Profile
1.25.16
Trademarks
- Johnston; David F - Williamsburg VA
- Johnston; David F. - Williamsburg VA
- Johnston; David F. - Poquoson VA US
- Johnston; David F. - Arlington MA
- Johnston; David F. - Yorktown VA
- Johnston; David F. - Tabb VA
- Johnston; David F. - Hampton VA
Trademarks
Patent Activity
| Patent | Date |
|---|---|
| Fan brake control system Grant 11,303,232 - Lesniak , et al. April 12, 2 | 2022-04-12 |
| Fan Brake Control System App 20200076334 - Lesniak; Brian A. ; et al. | 2020-03-05 |
| Control of grounded surface geometry in electrostatically enhanced fabric filters Grant 8,409,327 - Taylor , et al. April 2, 2 | 2013-04-02 |
| Systems and methods for monitoring a rapping process Grant 8,404,020 - Farmer , et al. March 26, 2 | 2013-03-26 |
| Control Of Grounded Surface Geometry In Electrostatically Enhanced Fabric Filters App 20110296989 - Taylor; Robert ; et al. | 2011-12-08 |
| Word recognition using choice lists Grant 7,809,574 - Roth , et al. October 5, 2 | 2010-10-05 |
| Speech recognition using automatic recognition turn off Grant 7,716,058 - Roth , et al. May 11, 2 | 2010-05-11 |
| Systems And Methods For Monitoring A Rapping Process App 20100057269 - Farmer; Terry Lewis ; et al. | 2010-03-04 |
| Word recognition using word transformation commands Grant 7,634,403 - Roth , et al. December 15, 2 | 2009-12-15 |
| Combined speech recognition and text-to-speech generation Grant 7,577,569 - Roth , et al. August 18, 2 | 2009-08-18 |
| Cleaning system and method for continuous emissions monitoring equipment Grant 7,562,556 - Johnston , et al. July 21, 2 | 2009-07-21 |
| Speech recognition using ambiguous or phone key spelling and/or filtering Grant 7,526,431 - Roth , et al. April 28, 2 | 2009-04-28 |
| Combined speech recognition and sound recording Grant 7,505,911 - Roth , et al. March 17, 2 | 2009-03-17 |
| Cleaning system and method for continuous emissions monitoring equipment App 20080078260 - Johnston; David F. ; et al. | 2008-04-03 |
| Speech recognition using selectable recognition modes Grant 7,313,526 - Roth , et al. December 25, 2 | 2007-12-25 |
| Methods, systems, and programming for performing speech recognition Grant 7,225,130 - Roth , et al. May 29, 2 | 2007-05-29 |
| Combined speech recognition and sound recording App 20050159957 - Roth, Daniel L. ; et al. | 2005-07-21 |
| Speech recognition using selectable recognition modes App 20050049880 - Roth, Daniel L. ; et al. | 2005-03-03 |
| Speech recognition using automatic recognition turn off App 20050043954 - Roth, Daniel L. ; et al. | 2005-02-24 |
| Word recognition using choice lists App 20050043949 - Roth, Daniel L. ; et al. | 2005-02-24 |
| Speech recognition using ambiguous or phone key spelling and/or filtering App 20050043947 - Roth, Daniel L. ; et al. | 2005-02-24 |
| Word recognition using word transformation commands App 20050038653 - Roth, Daniel L. ; et al. | 2005-02-17 |
| Combined speech recongnition and text-to-speech generation App 20050038657 - Roth, Daniel L. ; et al. | 2005-02-17 |
| Apparatus and method for filtering voltage for an electrostatic precipitator Grant 6,839,251 - Johnston , et al. January 4, 2 | 2005-01-04 |
| Methods, systems, and programming for performing speech recognition App 20040267528 - Roth, Daniel L. ; et al. | 2004-12-30 |
| Methods, systems, and programming for performing speech recognition App 20040049388 - Roth, Daniel L. ; et al. | 2004-03-11 |
| Apparatus and method for filtering voltage for an electrostatic precipitator App 20040037096 - Johnston, David F. ; et al. | 2004-02-26 |
| System and method for verification of acoustic horn performance Grant 6,628,568 - Mahler , et al. September 30, 2 | 2003-09-30 |
| System And Method For Verification Of Acoustic Horn Performance App 20030179650 - Mahler, Michael M. ; et al. | 2003-09-25 |
| Apparatus and method for filtering voltage for an electrostatic precipitator Grant 6,611,440 - Johnston , et al. August 26, 2 | 2003-08-26 |
| Method and system for improved rapper control Grant 6,540,812 - Farmer , et al. April 1, 2 | 2003-04-01 |
| Method and system for improved rapper control App 20030010203 - Farmer, Terry L. ; et al. | 2003-01-16 |
| Variable inductance current limiting reactor Grant 5,515,262 - Johnston , et al. May 7, 1 | 1996-05-07 |
| Induction heating coupler and annealer Grant 5,374,809 - Fox , et al. December 20, 1 | 1994-12-20 |
| Induction heating coupler Grant 5,350,902 - Fox , et al. September 27, 1 | 1994-09-27 |
| Electrical control system for electrostatic precipitator Grant 5,068,811 - Johnston , et al. November 26, 1 | 1991-11-26 |
| Nonintrusive method and apparatus for monitoring the cure of polymeric materials Grant 4,891,591 - Johnston , et al. January 2, 1 | 1990-01-02 |
| Electronic precipitator control Grant 4,860,149 - Johnston August 22, 1 | 1989-08-22 |
| Induction heating gun Grant 4,521,659 - Buckley , et al. June 4, 1 | 1985-06-04 |
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