Duff; David G
Patent Applications and Registrations
Patent applications and USPTO patent grants for Duff; David G.The latest application filed is for "micro-extrusion printhead with nozzle valves".
Company Profile
0.32.31
- Duff; David G - Portola Valley CA US
- Duff; David G. - Portola Valley CA
- Duff; David G. - Woodside CA US
- Duff; David G - Woodside CA
- Duff; David G. - Portola CA
Patent Activity
| Patent | Date |
|---|---|
| Generation and deployment of ice with modified optical and/or thermal properties Grant 9,927,162 - Field , et al. March 27, 2 | 2018-03-27 |
| Point-of-use electricity generation system Grant 9,376,958 - Bonora , et al. June 28, 2 | 2016-06-28 |
| Tactical smart grids Grant 9,281,690 - Eldershaw , et al. March 8, 2 | 2016-03-08 |
| Micro-Extrusion Printhead With Nozzle Valves App 20150132474 - Eldershaw; Craig ; et al. | 2015-05-14 |
| Micro-extrusion printhead with nozzle valves Grant 8,960,120 - Eldershaw , et al. February 24, 2 | 2015-02-24 |
| Generation and Deployment of Ice with modified Optical and/or Thermal Properties App 20140311178 - Field; Leslie A. ; et al. | 2014-10-23 |
| Metal trace fabrication for optical element Grant 8,624,102 - Chan , et al. January 7, 2 | 2014-01-07 |
| Metal trace fabrication for optical element Grant 8,389,851 - Chan , et al. March 5, 2 | 2013-03-05 |
| Transport for printing systems Grant 8,360,423 - Biegelsen , et al. January 29, 2 | 2013-01-29 |
| Metal Trace Fabrication For Optical Element App 20120305405 - Chan; Hing Wah ; et al. | 2012-12-06 |
| Transport for printing systems Grant 8,282,097 - Biegelsen , et al. October 9, 2 | 2012-10-09 |
| Tactical Smart Grids App 20120158196 - Eldershaw; Craig ; et al. | 2012-06-21 |
| Transport For Printing Systems App 20120006655 - Biegelsen; David K. ; et al. | 2012-01-12 |
| Transport For Printing Systems App 20120000386 - Biegelsen; David K. ; et al. | 2012-01-05 |
| Transport for printing systems Grant 8,042,807 - Biegelsen , et al. October 25, 2 | 2011-10-25 |
| Powdered toner direct marking apparatus Grant 8,023,866 - Lean , et al. September 20, 2 | 2011-09-20 |
| Wiring-free, plumbing-free, cooled, vacuum chuck Grant 7,954,449 - Duff , et al. June 7, 2 | 2011-06-07 |
| Module identification method and system for path connectivity in modular systems Grant 7,945,346 - Biegelsen , et al. May 17, 2 | 2011-05-17 |
| Rotational jam clearance apparatus Grant 7,931,269 - Duff , et al. April 26, 2 | 2011-04-26 |
| Rotational jam clearance apparatus Grant 7,918,453 - Duff , et al. April 5, 2 | 2011-04-05 |
| Metal Trace Fabrication For Optical Element App 20110031211 - Chan; Hing Wah ; et al. | 2011-02-10 |
| Rotary operated mechanism for retracting paper pathways of printers Grant 7,885,592 - Schmitz , et al. February 8, 2 | 2011-02-08 |
| Thermal Spray For Solar Concentrator Fabrication App 20100294364 - Chan; Hing Wah ; et al. | 2010-11-25 |
| Micro-machined fuel cells Grant 7,811,692 - Apte , et al. October 12, 2 | 2010-10-12 |
| Micro-Extrusion Printhead With Nozzle Valves App 20100143581 - Eldershaw; Craig ; et al. | 2010-06-10 |
| Powdered Toner Direct Marking Apparatus App 20100028054 - Lean; Meng H. ; et al. | 2010-02-04 |
| Universal variable pitch interface interconnecting fixed pitch sheet processing machines Grant 7,624,981 - Biegelsen , et al. December 1, 2 | 2009-12-01 |
| Micro-machined Fuel Cells App 20090047558 - Apte; Raj B. ; et al. | 2009-02-19 |
| Thermal Spray For Solar Concentrator Fabrication App 20090025784 - Chan; Hing Wah ; et al. | 2009-01-29 |
| Rotary operated mechanism for retracting paper pathways of printers App 20090003878 - Schmitz; Gregory P. ; et al. | 2009-01-01 |
| Micro-machined fuel cells Grant 7,459,225 - Apte , et al. December 2, 2 | 2008-12-02 |
| Wiring-Free, Plumbing-Free, Cooled, Vacuum Chuck App 20080277885 - Duff; David G. ; et al. | 2008-11-13 |
| Metal Trace Fabrication For Optical Element App 20080186593 - Chan; Hing Wah ; et al. | 2008-08-07 |
| Transport For Printing Systems App 20080150229 - Biegelsen; David K. ; et al. | 2008-06-26 |
| Module identification method and system for path connectivity in modular systems App 20080147234 - Biegelsen; David K. ; et al. | 2008-06-19 |
| Rotational Jam Clearance Apparatus App 20070296143 - Duff; David G. ; et al. | 2007-12-27 |
| Solar Concentrating Photovoltaic Device With Resilient Cell Package Assembly App 20070256725 - Fork; David K. ; et al. | 2007-11-08 |
| Universal variable pitch interface interconnecting fixed pitch sheet processing machines App 20070145676 - Biegelsen; David K. ; et al. | 2007-06-28 |
| Portable personal wearable active third arm App 20070059124 - Eldershaw; Craig ; et al. | 2007-03-15 |
| Rotational jam clearance apparatus Grant 7,185,888 - Duff , et al. March 6, 2 | 2007-03-06 |
| Rotational jam clearance apparatus App 20070029721 - Duff; David G. ; et al. | 2007-02-08 |
| Flexible director paper path module Grant 7,108,260 - Biegelsen , et al. September 19, 2 | 2006-09-19 |
| Rotational jam clearance apparatus App 20050212199 - Duff, David G. ; et al. | 2005-09-29 |
| Flexible director paper path module App 20050179198 - Biegelsen, David K. ; et al. | 2005-08-18 |
| Micro-machined fuel cells App 20050112433 - Apte, Raj B. ; et al. | 2005-05-26 |
| Six degree of freedom position ranging Grant 6,842,246 - Roufas , et al. January 11, 2 | 2005-01-11 |
| Robotic toy modular system Grant 6,605,914 - Yim , et al. August 12, 2 | 2003-08-12 |
| High mechanical advantage ratcheting apparatus Grant 6,603,281 - Yim , et al. August 5, 2 | 2003-08-05 |
| Six degree of freedom position ranging App 20030107737 - Roufas, Kimon D. ; et al. | 2003-06-12 |
| Robotic toy modular system with distributed program Grant 6,575,802 - Yim , et al. | 2003-06-10 |
| Robotic toy modular system App 20030038607 - Yim, Mark H. ; et al. | 2003-02-27 |
| Robotic toy modular App 20030040250 - Yim, Mark H. ; et al. | 2003-02-27 |
| Robotic toy modular system with distributed program App 20030040249 - Yim, Mark H. ; et al. | 2003-02-27 |
| Robotic toy with posable joints Grant 6,454,624 - Duff , et al. Sept | 2002-09-24 |
| High mechanical advantage ratcheting apparatus App 20020043950 - Yim, Mark H. ; et al. | 2002-04-18 |
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